Ho Reka Sefe ea Low Pass bakeng sa Seteishene sa Radio?

 

 

FMUSER e bile e mong oa baetapele barekisi ba thepa ea seea-le-moea hoo e ka bang halofo ea lekholo la lilemo. Ho tloha ka 2008, FMUSER e thehile tikoloho ea ts'ebetso e khothalletsang tšebelisano-'moho pakeng tsa basebetsi ba baetsi ba boenjiniere ba hloahloa le sehlopha se hlokolosi sa boenjiniere. Ka moea ona oa boitelo le boinehelo ba tšebelisano ea 'nete, FMUSER e khonne ho theha likopano tse ncha ka ho fetisisa tsa elektronike, e sebelisa melao-motheo e lekiloeng ea maobane le ho kenyelletsa saense e tsoetseng pele ea kajeno. E 'ngoe ea likatleho tsa rona tse motlotlo, hammoho le khetho e tsebahalang ea bareki ba rona ba bangata, ke ea rona RF low pass filter bakeng sa seea-le-moea.

 

"Haeba u batla lisebelisoa tsa seteishene sa seea-le-moea tse rekisoang, ke hobane'ng ha u sa khethe e 'ngoe ea lisebelisoa tse ntle ka ho fetisisa tsa seea-le-moea ho tsoa ho FMUSER? Li akaretsa mefuta eohle ea likopano tsa radiofrequency filter, tse ling tsa tsona li bohlokoa bakeng sa seea-le-moea, mohlala, filthara e tlase ea FM, hammoho le HPF e ngata e rekisoang, BPF ea rekisoa, BSF ea rekisoa, le li-filters tse tlase tsa phallo bakeng sa. e rekisoa joalo ka 88-108Mhz low pass filter e rekisoang. UHF le VHF filthara joalo ka UHF bandpass filthara le VHF bandpass filthara, 'me ehlile, ba boetse ba na le lisebelisoa tsa boleng bo holimo tsa seea-le-moea tse rekisoang."

- - - - - James, setho se tšepahalang sa FMUSER

 

Karolo e Latelang ke Hobaneng ha RF Low Power Filters e Hlokahala? | Skip

 

Seo re u tlisetsang sona Leqepheng lena

 

U ka Reka Sefe ea Low Pass Hokae? Hobaneng ho Hlokahala Lisefe tsa Low Pass RF? Ho Etsahala Joang Harmonic le Spurious Emissions e tenang? Sesefa se Molemohali sa RF Low Pass se Rekisoang  U ka Khetha Sefe e Molemohali ea Harmonics ea seea-le-moea joang? Lintlha tse Thahasellisang ka Li-Filters tsa RF

 

 Setlhopha sa FMUSER 20kW FM Low Pass se sebetsa hantle ho:

 

• Liteishene tsa seea-le-moea tsa profeshenale tsa FM maemong a liprofinse, masepala le makeisheneng
• Liteishene tsa seea-le-moea tsa FM tse mahareng le tse kholo tse nang le khaso e pharalletseng
• Seteishene sa seea-le-moea sa profeshenale sa FM se nang le bamameli ba fetang limilione
• Basebelisi ba liteishene tsa seea-le-moea ba hlokang litharollo tse felletseng tsa radio turnkey ka theko e tlase

 

Ke leboha feme ea maemo a lefats'e, FMUSER, e le moetsi ea ka sehloohong oa thekiso ea thepa ea khaso, e atlehile ho sebeletsa mefuta eohle ea bareki ka ho fana ka litharollo tse felletseng tsa khaso ka lilemo tse fetang 10, ntho e le 'ngoe ke bonnete ba hore ke filthara ea lowpass e matla e phahameng ka filthara ea bobeli le ea boraro ea li-harmonics hangata e sebelisoa ho kopanya le ho arola mats'oao a seea-le-moea a se nang mohala ho li-radio tse ngata tsa FM. 

 

"Nke ke ka re FMUSER ke morekisi ea molemo ka ho fetisisa oa liteishene tsa seea-le-moea lefatšeng, empa ho ba bang ba liteishene tsa seea-le-moea, ee, FMUSER ehlile ke morekisi ea tšepahalang le moetsi oa thepa ea seteishene sa seea-le-moea."

 

 - - - - - Peter, setho se tšepahalang sa FMUSER

 

▲ Moo U ka Rekang Sefe se Molemohali sa FM Low Pass ▲

▲ Khutlela ho Litaba ▲

 

Hobaneng ha RF Low Power Filters e Hlokahala bakeng sa Seteishene sa Radio?

 

Karolo e Fetileng ke Moo U ka Rekang Sefe se Molemohali sa FM Low Pass | Skip

Karolo e Latelang ke Ho Etsahala Joang Mehla e Khopisang ea Harmonic le Spurious | Skip

 

Karolo ea Bohlokoa ea Thepa ea Seteishene sa Radio

 

Mona ke mabaka a 'maloa a etsang hore li-filters tsa RF low pass li hlokehe bakeng sa indasteri ea khaso ea seea-le-moea.

 

• Harmonics le tlhahiso ea bohata li ke ke tsa qojoa, 'me li tla ama liteishene tsa seea-le-moea ka lihlopha tse fapaneng tsa maqhubu a seea-le-moea le ho fokotsa boleng ba mananeo a seea-le-moea' me seo ke boleng ba mantlha ba sefefo sa coaxial low pass seteisheneng sa radio.

 

• Haeba u sa sebelise mochini o sebetsang oa RF low pass, o kanna oa fuoa kotlo ke lefapha la taolo ea seea-le-moea sa lehae (joalo ka FCC) bakeng sa ho hlahisa tšitiso e kholo ea seea-le-moea, mohlala, lipalo tse sa batloeng le likhase tse hlahisoang ke FM ea hau. Sesebelisoa sa TV

 

• Li-transmitters tsa seea-le-moea li sebelisa li-filters tse phahameng tsa maqhubu a tlase ho thibela ho tsoa ha harmonic ho ka sitisang likhokahano tse ling.

 

• Ho hatella li-harmonic tsa li-transmitter tsa seea-le-moea sa FM: Hangata li-transmitter tsa FM li hlahisa li-harmonics - li-multiples of transmitter frequency. Tse ling tsa tsona li fella ka ho kena-kenana le kamohelo ea VHF-tv le UHF-tv le ho amohela li-radio tsa cellular. Letoto lena la li-filters tse matla tse tlase li feta har'a sehlopha sa maqhubu a FM kaofela ka tahlehelo e tlase mme li fana ka khatello e ngata ea harmonic.

 

 

Reka Sefe ea RF Harmonics ho Khaso ea FMUSER

 

Boleng bo boholo ka ho fetisisa ba Sesefa sa RF Harmonics ke ho thusa liteishene tsa seea-le-moea ho khetha mats'oao a hlokahalang ho sebelisoa. Haholo-holo liteishene tse kholo tsa seea-le-moea, mokhoa oa ho fa bamameli mananeo a seea-le-moea a boleng bo holimo ntle le ho fuoa kotlo ke batsamaisi ba seea-le-moea sa lehae ke tlhokahalo ea ho matlafatsa tlholisano ea lithaka tsa seea-le-moea le ho ntlafatsa tlhokomeliso ea liteishene tsa seea-le-moea.

 

FMUSER e fana li-filters tsa harmonic e kang ea 20kW FM sefene sa phase e tlase bakeng sa maemo a matla a transmitter ho fihla ho 20 kW. Moqapi o ikhethang o fana ka 45 dB kapa ho hana ho feta ho tloha ho ea bobeli ho ea ho ea leshome ea harmonic le ho feta. Sena se fana ka lihloela tse nang le bolelele ba 30% ho isa ho 50% bo khuts'oane ho feta lifilthara tse tloaelehileng tsa FM. 

 

Re na le li-filters tse ntle ka ho fetisisa tsa RF tse rekisoang, reka li-filters tsa RF matla ao ho tloha ho 500W ho isa ho 1000W ho tloha ho FMUSER! Ka ho toba, ba 20kW FM sefahla sa phase e tlase ea rekisoa (LPF) le Li-filters tsa 10kW VHF tse tlase li rekisoa (LPF), 10kW VHF bandstop filter ea rekisoa (BSF), 350W UHF dijithale bandpass filter ea rekisoa, le e 'ngoe ea lisebelisoa tsa rona tse rekisoang ka ho fetesisa tsa seea-le-moea - li-filters tsa li-bandpass tsa FM lia rekisoa.

 

U ka fumana tsohle tseo u li hlokang haeba u lula u hlahloba, re na le tsona Li-filters tsa li-bandpass tsa FM matla ao ho tloha 500W ho 1kW, ka ho khetheha, ke 500W, 1500W, 3000W, 5000W, 10000W Li-filters tsa li-bandpass tsa FM tse etselitsoeng liteishene tsa seea-le-moea tsa FM ka ho khetheha. Ntle le moo, ho itloaetsa hoa fumaneha bakeng sa li-filters tsa harmonics, kaofela ha tsona li na le litšenyehelo tsa tekanyetso le boleng bo hlollang, re kope tšehetso, kaofela re litsebe!

 

E le e 'ngoe ea likopano tsa bohlokoa ka ho fetisisa tsa khaso ea liteishene tsa seea-le-moea tsa FM / TV, the Sesefa sa RF cavity e hlokahala joalo ka mokopanyi oa FM / UHF / VHF, mochini o fetisang molaetsa oa seea-le-moea, antenna e fetisang, le lisebelisoa tse ling tse tšoanang tsa seteishene sa khaso. Ha se ho feteletsa litaba ho bolela hore joalo ka sehlahisoa sa mantlha sa lihlahisoa tsa RF tse sa sebetseng, li-filters li bohlokoa ho feta likopano tse ling tsa batho ba pheta-phetoang le liteishene tsa motheo.

 

Leha ho le joalo, filthara ea RF, mohlala, filthara e tlase ea RF, ke sesebelisoa se hlokahalang ka lehlakoreng la phetisetso ea seteishene sa khaso ho hatella li-harmonics tse hlahisoang ke transmitter. Lebaka ke hore basebelisi ba RF lefatšeng ka bophara ba sebelisa maqhubu a fapaneng, kahoo ho na le matšoao a mangata a bohlasoa a fofang moeeng, a mang ke a thelevishene, sesole, a mang ke a lipatlisiso tsa boemo ba leholimo le merero e meng.

 

▲ Ke Hobane'ng ha Li-Filters tsa RF li Hlokahala bakeng sa Seteishene sa Radio ▲

▲ Khutlela ho Litaba ▲

 

Ho Etsahala Joang Harmonic le Spurious Emissions e tenang?

 

Karolo e Fetileng ke Hobaneng ho Hlokahala Lisefe tsa Low Pass RF | Skip

Karolo e Latelang ke Sesefa se Molemohali sa RF Harmonics se Rekisoang | Skip

 

Se tšoenyang lienjineri tsohle tsa RF ke hore mesi e tsoang ho harmonic le ea bohata e ke ke ea qojoa. Bakeng sa basebelisi ba liteishene tsa seea-le-moea, ho bohlokoa haholo ho utloisisa hore na li-harmonics le mesi e hlahisoang ke leshano ke eng, kapa hore na li hlahisoa joang le hore na li ka fokotsoa joang.

 

Ka nako e ts'oanang, ho molemo ho laola boleng ba mananeo a seea-le-moea, sehlopha sa litsebi sa FMUSER sa RF se ile sa re hlalosetsa tsebo e itseng ea khopolo-taba mabapi le li-harmonics le tlhahiso ea bohata.

 

Haeba u batla ho utloisisa haholoanyane hore na hobaneng liteishene tsa seea-le-moea li hloka li-filters tsa RF tsa litsebi, u ka hloka litaba tse latelang

 

Harmonics e hlahisoa joang?

 

Maqhubu a hlahang ka makhetlo a mangata a mangata a kenang a bitsoa harmonics. Ka mantsoe a mang, li-harmonics ke phetisetso e sa batleheng, e leng makhetlo a mangata a phetisetso e lebelletsoeng. Phetiso ena e sa batleheng e etsahala maemong a tlase a matla ho feta phetiso e lakatsehang.

 

Joalo ka ha bohle re tseba, ho na le lisebelisoa tsa bohlokoa liteisheneng tsa seea-le-moea, ke hore, li-radio transmitters. Hore na 1kW kapa 10kW transmitter e tla etsoa ka mokhoa o ikhethileng, 'me karolo ea mantlha ea RF ea transmitter e na le filthara ea band-pass, empa hoo e batlang e le sesebelisoa se seng le se seng sa RF se tla hlahisa li-harmonics, Esita le transmitter e sebetsang ka ho fetisisa e se nang mohala e ke ke ea qoba bohlasoa le ho kheloha. tlhahiso

 

Harmonics e boetse e nkuoa e le sesosa se ka bakang tšitiso ea RF. Mefuta e meng ea maqhubu, joalo ka maqhubu a lisekoere, maqhubu a sawtooth, s, le maqhubu a triangular, a na le matla a mangata ka har'a maqhubu a harmonic.

 

Spurious Emission e hlahisoa joang?

 

Ho fapana le li-harmonics, tlhahiso ea bohata ha e etsahale ha maqhubu a ho kenya a imena habeli; Ha baa ka ba e jala ka boomo. Emission e hlahileng ka phoso, e tsejoang ka hore ke splash. Li bakoa ke ho kena-kenana le ho kena-kenana le motlakase, ho kena-kenana le motlakase, ho feto-fetoha ha maqhubu kapa li-harmonics.

 

▲ Ho Etsahala Joang Mehla e Khopisang ea Harmonic le Spurious ▲

▲ Khutlela ho Litaba ▲

 

Sesefa se Molemohali sa RF Low Power se Rekisoang 

 

Karolo e Fetileng ke Kamoo Harmonics le Phallo ea Bokao e Etsahalang | Skip

Karolo e Latelang ke Mokhoa oa ho Khetha Sefe se Molemohali sa FM Harmonics | Skip

 

U Hloka Sefa sena sa Low Pass RF ho feta neng kapa neng

 

Kaofela rea ​​tseba hore li-radio transmitters lia sebetsa li-filters tsa RF tse tlase ho thibela li-harmonics le likhase tse seng tsa nnete tse ka sitisang likhokahano tse ling, athe li-transmitters tse ngata tsa FM li hlahisa li-harmonics esita le ka makhetlo a mashome a maqhubu a mantlha. 

 

Ka lehlohonolo, FMUSER 20kW FM sefene sa phase e tlase ke e 'ngoe ea likopano tse ntle ka ho fetisisa tsa ho sefa tsamaiso ea RF bakeng sa sehlopha sa maqhubu a khaso ea FM. E le ho thusa ho fokotsa tšusumetso e tlisoang ke li-harmonics le tlhahiso ea bohata, FMUSER e hlahisa e 'ngoe ea li-filters tsa rona tse ikhohomosang. 20kW RF low pass filter bakeng sa seea-le-moea sa FM.

 

Filter ea Low Pass RF e Entsoe Feela Bakeng sa Boleng bo Molemo ka ho Fetisisa

 

Haeba u sa batle hore li-harmonics tse sa batleheng li oele sehlopheng sa maqhubu a sa amaneng le uena 'me li bake tšitiso e tebileng (u ka fumana mangolo a mangata a litletlebo 'me ua fuoa kotlo ke mekhatlo e meng ea taolo), mohlala, maqhubu a liteishene tsa TV kapa diteishene tse ding tsa radio. E sebelisa FMUSER 20kW RF filthara ea pase e tlase ke eona tsela e molemohali ea ho u thusa ho lokoloha ho li-harmonics tse khopisang le mangolo a tletlebo a thata. 

 

 

• Matla a Hlollang a Harmonics

 

Kholo ka ho fetisisa tšobotsi ena filthara e phahameng e tlase ea matla a tlase ke eona harmonic attenuation bokhoni - ho latela tlhaiso-leseling e tšepahalang ea tlhahlobo ea sehlopha sa liteko sa FMUSER, ts'ebetso ea bobeli ea harmonic le attenuation e phahameng ea harmonic ea sena. Sefahla sa RF sa 20kW se tlase ba fihletse ka ho latellana ≥ 35 dB le ≥ 60 dB, e leng matla a matla a ho sefa a li-harmonics bakeng sa seteishene sa seea-le-moea. 

 

• Tahlehelo ea Kenyo e Tlase

 

The tahlehelo e tlase ea ho kenya ea FMUSER 20kW FM sefene sa phase e tlase e etsa hore e tšoanele maemo a matla a fihlang ho li-watts tse 20000, ho bolelang hore ka mochini ona o makatsang oa RF, o khona ho kopanya ho sebelisa li-transmitters tse fapaneng tse nang le matla a fapaneng seteisheneng sa seea-le-moea, 'me bamameli ba ka fumana mananeo a seea-le-moea. boleng bo holimo le li-harmonics tse tlase haholo! Sehokelo: 3 1 / 8 "matla a phahameng a ho kenya 20kw

 

• Molemo ka ho Fetisisa oa Boiphihlelo

 

Lisefe tsa 20kW Low Pass tse rekisoang, tse hahelletsoeng ka har'a sistimi e hokelang habonolo, li etselitsoe Seteishene sa seea-le-moea sa FM ka ho khetheha. Ho nahanela phihlelo e ntle ka ho fetisisa ea mosebedisi, sisteme ea filthara e nolofalletsa ho hokahana habonolo ho li-transmitters tsa FM.

 

FMUSER e fana ka lethathamo le felletseng la Lisefe tsa FM le UHF/VHF bakeng sa khatello ea li-harmonics liteisheneng tsa seea-le-moea. 

 

Ha re bua lefatšeng ka bophara, re ka thabela ho thusa basebelisi ba liteishene tsa seea-le-moea ho tsoa lefats'eng lohle ho arola liphatlalatso tsa FM tse arohaneng haufi, rea hlokomela hore ba bang ba bona ba bonts'a thahasello e kholo ea ho kopanya maqhubu a mangata a FM ho antenna e le 'ngoe, ba bang ba ka thabela ho ba le lits'ebetso tse tloaelehileng. bakeng sa li-transmitter tse ngata liteisheneng tsa tsona. 20kW FM sefene sa phase e tlase, mohlala, ke e 'ngoe ea lithekiso tsa rona tse ntle ka ho fetisisa Lisefa tsa li-harmonics tsa FM e sebelisetsoang ho kopanya li-transmitters tsa seea-le-moea tsa FM matla a fihlang ho 20kW, u ka bona monna enoa e moholo liteisheneng tse ling tse kholo tsa seea-le-moea.

 

RE RE MAMELA LIHLOKO TSA HAO KA METSO haeba o khahlehela e 'ngoe ea thekiso ea rona e holimo Lisebelisoa tsa RF harmonics. 

 

Nahana hore u hloka ho feta seo u se bonang

 

Joalo ka ha re boletse ka holimo, re e mong oa ba molemohali baetsi ba lisebelisoa tsa seea-le-moea sebakeng sa lefats'e, ntle le ho Sefahla sa RF sa 20kW se tlase, u ka boela ua kopana le tse ling li-filters tsa RF tse rekisoang ka ho fetesisa dikahareng tse latelang. Che, boleng bo botle le litšenyehelo tsa tekanyetso joalo ka kamehla.

 

Chate A. FM/VHF LPF Low Pass Filter ea Thekiso

 

E latelang ke 10kW VHF Bandreject Sefe VHF Sefe ea BSF Bandstop fkapa Thekiso | Skip

 

tlhophiso	ea mohlala	Max. Matla a ho kenya	VSWR	maqhubu lethathama	Bonolo	2nd harmonic	3rd harmonic	dikgokelo	Etela bakeng sa Tse ling
FM	A	20 kW	≤ 1.1	87 - 108 MHz		≥ 35 dB	≥ 60 dB	3 1 / 8 "	Hape
VHF	B	10 kW	≤ 1.1	167 - 223 MHz		≥ 35 dB	≥ 60 dB	3 1 / 8 "	Hape

 

Chate B. 10kW VHF BSF Bandstop Bandreject Sefe e ea Thekisoa

 

E Fetileng ke Sefe ea FM/VHF LPF Low Pass e rekisoang | Skip

E latelang ke 350W UHF DTV BPF Bandpass Filter ea Thekiso | Skip

 

tlhophiso	ea mohlala	Max. Matla a ho kenya	VSWR	fv	F0±4MHz	maqhubu lethathama	Bonolo	fv-4.43±0.2MHz	dikgokelo	Etela bakeng sa Tse ling
VHF	A	10 kW		≤ 1.1	≤ 1.1	167 - 223 MHz		≥ 20 dB	3 1 / 8 "	Hape

 

Sefate sa Chate sa C. 350W UHF DTV BPF Bandpass se Thekisoa

 

E Fetileng ke 10kW VHF BSF Bandstop Bandreject Sefe e ea Thekisoa | Skip

E latelang ke Sefe ea FM BPF Bandpass e ea Thekisoa | Skip

 

tlhophiso

ea mohlala

Max. Matla a ho kenya

Cavities

VSWR

Bohloko ba ho Shoeloa tsenyo

f0

F0±3.8MHz

F0±4.2MHz

F0±6MHz

F0±12MHz

Etela bakeng sa Tse ling

UHF

A

350W

6

≤ 1.15

474 MHz

≤ 0.50 dB

≤ 1.3 dB

≥ 8 dB

≥ 20 dB

≥ 40 dB

Hape

858 MHz

≤ 0.60 dB

≤ 1.65 dB

≥ 8 dB

≥ 20 dB

≥ 40 dB

Hape

 

Sesefo sa Chate ea D. FM BPF Bandpass e rekisoang

 

E Fetileng ke 350W UHF DTV BPF Bandpass Filter ea Thekiso | Skip

E latelang ke Sesefo sa VHF BPF Bandpass se ea Thekisoa | Skip

 

tlhophiso

ea mohlala

Max. Matla a ho kenya

Cavities

VSWR

maqhubu lethathama

Bohloko ba ho Shoeloa tsenyo

f0

F0±300kHz

F0±2MHz

F0±4MHz

dikgokelo

Etela bakeng sa Tse ling

FM

A

500W

3

≤ 1.1

87 - 108 MHz

0.70 dB

0.75 dB

25 dB

40 dB

7-16 DIN

Hape

FM

A1

500W

4

≤ 1.1

87 - 108 MHz

1.10 dB

1.20 dB

40 dB

60 dB

7-16 DIN

Hape

FM

A

1500W 1.5kW

3

≤ 1.1

87 - 108 MHz

Bohloko ba ho Shoeloa tsenyo

0.30 dB

0.35 dB

25 dB

40 dB

7-16 DIN

Hape

FM

A1

1500W 1.5kW

4

≤ 1.1

87 - 108 MHz

0.50 dB

0.60 dB

40 dB

60 dB

7-16 DIN

Hape

FM

A

3000W 3kW

3

≤ 1.1

87 - 108 MHz

Bohloko ba ho Shoeloa tsenyo

0.25 dB

0.30 dB

25 dB

40 dB

1 5 / 8 "

Hape

FM

A1

3000W 3kW

4

≤ 1.1

87 - 108 MHz

0.40 dB

0.45 dB

≥ 40 dB

60 dB

1 5 / 8 "

Hape

FM

A

5000W 5kW

3

≤ 1.1

87 - 108 MHz

Bohloko ba ho Shoeloa tsenyo

0.20 dB

0.25 dB

≥ 25 dB

40 dB

1 5 / 8 "

Hape

FM

A1

5000W 5kW

4

≤ 1.1

87 - 108 MHz

0.35 dB

0.40 dB

40 dB

60 dB

1 5 / 8 "

Hape

FM

A

10000W 10kW

3

≤ 1.1

87 - 108 MHz

Bohloko ba ho Shoeloa tsenyo

0.15 dB

0.15 dB

25 dB

40 dB

3 1 / 8 "

Hape

FM

A1

10000W 10kW

4

≤ 1.1

87 - 108 MHz

0.25 dB

0.30 dB

≥ 40 dB

60 dB

3 1 / 8 "

Hape

 

Chate E. VHF Sesefo sa BPF Bandpass se ea Thekisoa

 

E Fetileng ke Sefe ea FM BPF Bandpass e ea Thekisoa | Skip

Khutlela ho Sefe ea FM/VHF LPF Low Pass e rekisoang | Skip

 

tlhophiso

ea mohlala

Max. Matla a ho kenya

Cavities

VSWR

maqhubu lethathama

Bohloko ba ho Shoeloa tsenyo

f0

F0±300kHz

F0±2MHz

F0±4MHz

dikgokelo

Etela bakeng sa Tse ling

VHF

A

500W

4

≤ 1.1

167 - 223 MHz

0.40 dB

0.50 dB

20 dB

35 dB

7-16 DIN

Hape

VHF

A1

500W

6

≤ 1.1

167 - 223 MHz

0.80 dB

1.00 dB

50 dB

70 dB

7-16 DIN

Hape

VHF

A

1500W 1.5kW

4

≤ 1.1

167 - 223 MHz

Bohloko ba ho Shoeloa tsenyo

0.15 dB

0.20 dB

20 dB

35 dB

1 5 / 8 "

Hape

VHF

A1

1500W 1.5kW

6

≤ 1.1

167 - 223 MHz

0.25 dB

0.30 dB

50 dB

70 dB

1 5 / 8 "

Hape

VHF

A

3000W 3kW

3

≤ 1.1

167 - 223 MHz

Bohloko ba ho Shoeloa tsenyo

0.10 dB

0.15 dB

10 dB

20 dB

1 5 / 8 "

Hape

VHF

A1

3000W 3kW

4

≤ 1.1

167 - 223 MHz

0.20 dB

0.25 dB

20 dB

35 dB

1 5 / 8 "

Hape

VHF

A

5000W 5kW

3

≤ 1.1

167 - 223 MHz

Bohloko ba ho Shoeloa tsenyo

0.10 dB

0.10 dB

10 dB

20 dB

1 5 / 8 "

Hape

VHF

A1

5000W 5kW

4

≤ 1.1

167 - 223 MHz

0.15 dB

0.20 dB

20 dB

35 dB

1 5 / 8 "

Hape

VHF

A

10000W 5kW

3

≤ 1.1

167 - 223 MHz

Bohloko ba ho Shoeloa tsenyo

0.10 dB

0.10 dB

10 dB

20 dB

3 1 / 8 "

Hape

VHF

A1

10000W 5kW

4

≤ 1.1

167 - 223 MHz

0.15 dB

0.20 dB

20 dB

35 dB

3 1 / 8 "

Hape

 

Reka Sefe ea RF Harmonics bakeng sa Seteishene sa Radio? Mona ke Sebaka se Nepahetseng!

 

FMUSER ke e mong oa baetsi ba lifilimi ba RF ba hlahisang harmonics Sefe ea thekiso haufi le 200+ linaheng le libakeng ho pota lefatše, mona ke linaha tse khothalelitsoeng tseo u ka li buang ho tsoa ho tsona.

 

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua le Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia le Herzegovina, Botswana , Brazil, Brunei, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo, Democratic Republic of the, Congo, Republic of the, Costa Rica , Côte d'Ivoire, Croatia, Cuba, Cyprus, Czech Republic, Denmark, Djibouti, Dominica, Dominican Republic, East Timor (Timor-Leste), Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini, Ethiopia, Fiji, Finland, France, Gabon, The Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel , Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Korea, North, Korea, South, Kosovo, Kuwait,Kyrgyzstan, Laos, LATVia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Federated States of, Moldova, Monaco , Mongolia, Montenegro, Morocco, Mozambique, Myanmar (Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts le Nevis, Saint Lucia, Saint Vincent le Grenadines, Samoa, San Marino, Sao Tome le Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, Spain, Sri Lanka, Sudan, Sudan, South, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Togo, Tonga, Trinidad le Tobago , Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab E mirates, United Kingdom, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

 

Kamehla re Mona ka Litlhoko tsa Hao

 

Na u ntse u nahana ka RF harmonics filthara theko? Re rala le ho etsa moralo oa tšebeliso ea chelete, 'me re a khona li-filters tsa harmonics bakeng sa liteishene tsa seea-le-moea, ho tloha Li-filters tsa LPF tse tlase ho li-filters tsa bandstop 'me Lisebelisoa tsa li-bandpass tsa FM/UHF/VHF, joalo-joalo

 

Tlatsa "Iteanye le rona" lakane ka ho le letšehali le re tsebise lintlha tsa hau tse hlokahalang, e 'ngoe ea lithekiso tsa rona tse nang le phihlelo e tla arabela hang-hang le ho thusa ho khetha e Sesefa sa li-harmonics tsa FM/TV e kopanang le tlhoko ea hau, haholo-holo bakeng sa lipotso tse kang "top-sale low pass filter" e rekisoang, mokhoa oa ho etsa filthara ea bandpass, tharollo e feletseng ea li-filter turnkey, joalo-joalo, lipotso tse tloaelehileng tse kang theko, nako ea ho beleha, kapa litlhaloso li lokolohile ho botsa. Bua seo u se hlokang, RE MAMELA KA MEHLA.

 

▲ Sesefa se Molemohali sa RF Harmonics se Rekisoang  ▲

▲ Khutlela ho Litaba ▲

 

U ka Khetha Sefe e Molemohali ea Harmonics ea seea-le-moea joang?

 

Karolo e Fetileng ke Sesefa se Molemohali sa RF Harmonics se Rekisoang | Skip

Karolo e Latelang ke Lintlha tse khahlisang le Q&A mabapi le li-Filters tsa RF | Skip

 

Ba bang ba bareki ba rona ba na le lipelaelo tse kang, ha ke tsebe hantle ho khetha mofuta o nepahetseng oa RF harmonics sefa, kapa ke batla mefuta e 'meli ea li-filters tsa harmonics empa ke na le 50K$ feela bakeng sa ho reka, joalo-joalo.

 

Ho latela lipatlisiso tse phethahetseng tsa mebaraka ea Lisefe tsa li-harmonics tsa FMUSER, re ile ra fumana hore top-thekiso Li-filters tsa RF tsa harmonic na le likarolo tse latelang tse tšoanang:

 

1. Tse fapa-fapaneng Filter Customization le OEM Kamohelo

 

Ho itloaetsa le moralo oa sefe o bonts'a boiqapelo ba moetsi oa lisebelisoa tsa khaso le bokhoni ba lisebelisoa tsa khaso. Sesefa se setle sa li-harmonics tsa RF se lokela ho ba le litšobotsi tsa theko ea tekanyetso, bophelo bo bolelele ba ts'ebeletso. Li-filters tsa FMUSER 20kW FM tse nang le phallo e tlase li bonolo ho li sebelisa ebile li theko e tlase bakeng sa basebelisi ba liteishene tsa seea-le-moea.

 

2. Fumaneha Bonyane 1 PCS Design le Custom Service Service

 

Ts'ebeletso ea ho rala le ho itlhophisa e fanoe bakeng sa bonyane ba 1 pcs Sefe. Hobane basebelisi ba fapaneng ba seea-le-moea ba hloka ho tobana le litlhoko tsa 'nete tsa liteishene tse fapaneng tsa seea-le-moea, hore na mofani oa sefahla sa RF a ka khona ho iketsetsa ka bolokolohi le lihloela tsa moralo e se e le e 'ngoe ea litekanyetso tsa ho leka matla a phepelo ea barekisi ba lifilimi. Hobaneng ha FMUSER e ikhetha ho tsoa ho barekisi ba bangata ba li-filters ke hobane li-filters tsa bona tsa RF lia khoneha, li sebetsa hantle haholo, li theko ea tekanyetso, 'me ho bonolo ho li sebelisa. Ho sa tsotelehe hore na u batla ho etsa lihloela tse kae tsa boemo bo holimo, FMUSER e ka u thusa kamehla

 

3. RF Harmonics Sefe Tataiso ea ho Reka ho tsoa ho FMUSER

 

Mokhoa oa ho khetha li-filters tse phahameng tsa RF harmonics har'a barekisi ba lisebelisoa tsa seea-le-moea ka selemo sa 2021 e bile bothata bo matla ho bareki ba bangata ba bacha le ba khale ba FMUSER.

 

Kamora boithuto ba sehlopha sa rona sa tekheniki, re fumane hore likarolo tse ling tsa profeshenale le tsona li ka khona ho u thusa ho etsa khetho, re boetse re kenella lipapaling, re ithaopela ho fana ka sefahla sa rona se setle ka ho fetisisa sa li-harmonics bakeng sa hau, ka hona, haeba u hloka. Lisebelisoa tsa RF tsa harmonic lia rekisoa kapa o hloka tlhahisoleseling efe kapa efe mabapi le tsa moraorao harmonic filters theko ho tsoa ho FMUSER, ka kopo tseba seo RE MAMELA KA MEHLA!  

 

• Pime e ka Tlase ke Lipontšo tse Matla

 

Ka mohlala, PIM (AKA: Passive Intermodulation), rea tseba hore PIM ke phello ea lipontšo tse se nang thuso tse hlahisoang ke ho kopanya maqhubu a mabeli kapa ho feta ka lisebelisoa tse se nang moeli. Lipontšo tsena tse ncha li tla kena-kenana le ho sotha matšoao a pele a fetisitsoeng pakeng tsa lisebelisoa tse peli tse se nang mohala. E ka hlahisa tšitiso ea matšoao tsamaisong efe kapa efe e se nang mohala. PIM e tlase e bolela ho ba le lets'oao le matla le nang le bandwidth e eketsehileng bakeng sa basebelisi ba bangata, ho bolelang khotsofalo ea bareki le chelete e phahameng ea basebetsi.

 

• O tla Hloka Tahlehelo e Tlase ea Kenyeletso le Tahlehelo ea ho Khutlisa

 

Tahlehelo ea ho kenya le tahlehelo ea ho khutla e bapala karolo ea bohlokoa moralong le nts'etsopele ea lisebelisoa tsa maqhubu a holimo joalo ka li-filters tsa RF, li- divider tsa matla a RF, le liamplifiers tsa RF. Ke ntho ea tlhaho e hlahang mefuteng eohle ea phetisetso (phetiso ea data kapa motlakase). Kaha sena ke 'nete bakeng sa hoo e batlang e le melapo eohle ea phetiso ea' mele kapa litsela tse tsamaisang, ha tsela e telele, tahlehelo e phahame. Ho phaella moo, tahlehelo ena e tla boela e hlahe sebakeng se seng le se seng sa khokahanyo haufi le mohala, ho kenyelletsa le manonyeletso le lihokelo. Bakeng sa kopano ea maqhubu a phahameng joalo ka li-filters tsa RF, lihloela tse nang le tahlehelo e tlase ea ho kenya le lintlha tse ling tse ntle tsa thekiso hangata e ka ba khetho ea pele bakeng sa basebelisi ba seea-le-moea.

 

• E Hole ho Feta Seo U se Bonang

 

Kamoo ho bonahalang kateng, ho na le litšupiso tsa bohlokoa ho feta tahlehelo ea Insertion, li-parameter tse ling tse kang boleng ba sephutheloana le ho sebetsana le matla a phahameng, joalo-joalo le tsona ke lintlha tsa bohlokoa ha u reka sefe e ntle ea li-harmonics tsa RF. Haeba u batla lintlha tse ling tsa mahala mabapi le lifilthara tsa RF harmonics, ka kopo etsa bonnete ba hore u ikopanya le sehlopha sa rona sa tekheniki, ba 7/24 inthaneteng ba emetse litaba tse monate tsa hau. Mona ke seo sehlopha sa tekheniki sa FMSUER se se khothalletsang:

 

• Ho fokotsa boholo ba filthara ka tlholisano ea litheko Sehlahisoa se phethahetseng bakeng sa maqhubu a mangata a radio microwave, joalo ka sistimi ea Telecommunication, IEEE 802.
• E babatsehang botsitso ba mocheso
• Ho sebetsana le matla a phahameng le boleng bo botle ba ho fokotsa matla
• Joalo-joalo

 

Bakeng sa ho hatella Li-Harmonics tsa Seteishene sa FM: Li-transmitter tsa FM hangata li hlahisa li-harmonics - li-multiple frequency tsa transmitter. Tse ling tsa tsona li baka tšitiso ho kamohelo ea VHF-TV le UHF-TV le ho amohela li-radio tsa cellular. Letoto lena la li-filters tse tlase li fetisa sehlopha sohle sa FM ka tahlehelo e tlase mme li fana ka khatello e matla ea harmonic.

 

▲ Mokhoa oa ho Khetha Sefe se Molemohali sa FM Harmonics ▲

▲ Khutlela ho Litaba ▲

 

Lintlha tse khahlisang le Q&A mabapi le li-Filters tsa RF

 

Karolo e Fetileng ke Mokhoa oa ho Khetha Sefe se Molemohali sa FM Harmonics | Skip

Khutlela Karolong ea Pele Moo U ka Rekang Sefe se Molemohali sa FM Low Pass | Skip

 

Haeba u batla ho tseba haholoanyane ka sebopeho sa potoloho kapa karolo ea papatso ea RF filthara, FMUSER e u khothaletsa hore u ithute ka lisebelisoa tsa elektroniki kapa u botse sehlopha sa rona sa barekisi ka kotloloho, hobane litaba tseo u li balileng ha li lekane ho u hlalosetsa sefahla sa RF ka botlalo le ka mokhoa o hlakileng. (PS: Wikipedia e kanna ea se khone ho e etsa). Ka hona, Sohle seo re ka u etsetsang sona ke ho hlalosa ka mokhoa o bonolo le ka mokhoa o hlakileng sebopeho le mefuta ea lihloela tsa RF, le hore na lihloela tsa RF li sebetsa joang. Mona, FMUSER e thathamisa lipotso tse ling tse khahlisang mabapi le Li-Filters tsa RF tse hlahisitsoeng ke bareki ba seteishene sa seea-le-moea, 'me ehlile likarabo tsa rona. Ka kopo tsoela pele ho bala Haeba u batla ho tseba haholoanyane ka li-filters tsa RF. 

 

Q1: Li-filters tsa RF li sebetsa joang ka litsela tse ling ntle le ho FM / TV Station?

 

Li-filter tsa RF ke likarolo tsa bohlokoa theknolojing e se nang mohala, li-filters tsa RF li sebelisoa le li-receiver tsa seea-le-moea e le hore ho ka natefisoa feela ke mefuta e nepahetseng ea maqhubu ha ho ntse ho sefa lihlopha tse ling tse sa batleheng tsa maqhubu. Lisefe tsa RF li entsoe ka tsela eo li ka sebetsang habonolo ka har'a maqhubu a tlohang bohareng ho isa ho a holimo haholo, e leng megahertz le gigahertz. Ka lebaka la sebopeho sa eona sa ts'ebetso, hangata e sebelisoa lisebelisoa tse kang seea-le-moea, likhokahano tse se nang mohala, thelevishene, joalo-joalo.

 

Lisefe tsa RF li ka sefa lerata kapa tsa fokotsa tšitiso ea mats'oao a kantle e ka amang boleng kapa ts'ebetso ea sistimi efe kapa efe ea puisano. Ho haella ha li-filters tsa RF tse nepahetseng ho ka ba le phello e mpe ho phetisoeng ha maqhubu a matšoao a ka qetellang a lematsa mokhoa oa puisano.

 

Ha ho na le li-filters tsa RF tse nepahetseng, litšitiso tsa kantle hammoho le tšitiso ea lets'oao e hlahisoang ke sistimi ea boahelani ea puisano li ka thijoa habonolo. Sena se boloka boleng ba maqhubu a mats'oao a batloang ha se ntse se sefa maqhubu 'ohle a sa batleheng habonolo.

 

Ka lebaka lena, li-filters tsa RF li bapala karolo ea bohlokoa tsamaisong ea puisano e se nang mohala, ke hore sathelaete, radar, mobile wireless system, le tse ling. 

 

Ka kakaretso, lihloela li bobebe 'me li ka thusa ho ntlafatsa ts'ebetso ea maqhubu a lets'oao. Boemong boo li-filters tsa RF li hlolehang ho fana ka ts'ebetso e lebelletsoeng, o ka hlahloba likhetho tse ling tse fapaneng, e 'ngoe ea tsona ke kenyelletso ea amplifier moralong oa hau. Ho tloha ho sebuela-hōle sa Trellisware ho ea ho li-amplifier leha e le life tse ling tsa RF, u ka fetola maqhubu a tlase ho a holimo; ka hona ho matlafatsa ts'ebetso ea kakaretso ea meralo ea RF.

 

Ntle le moo, li-filters tsa RF le tsona li bapala karolo ea bohlokoa tikolohong ea liselefouno. Ha ho tluoa tabeng ea li-mobiles, li hloka palo e itseng ea lihlopha ho sebetsa hantle. Ka lebaka la khaello ea sefe e nepahetseng ea RF, lihlopha tse fapaneng li ke ke tsa lumelloa ho phela hammoho ka nako e le 'ngoe ho bolelang hore lihlopha tse itseng li tla hanoa, ke hore, Global Navigation Satellite System (GNSS), polokeho ea sechaba, Wi-Fi, le tse ling. Mona, li-filters tsa RF li bapala karolo ea bohlokoa ka ho lumella lihlopha tsohle ho phela hammoho ka nako e le 'ngoe.

 

Ka lebaka la nts'etsopele ea R&D e tsoetseng pele ea FMUSER, re u fa li-filters tse ngata tse fapaneng, ka kopo etsa bonnete ba hore o ikopanya le sehlopha sa rona sa thekiso haeba o sa tsebe hantle hore na ke life tse loketseng seteishene sa hau sa khaso, sehlopha sa rona sa thekiso le botekgeniki se tla be se emetse LITS'EBE TSOHLE.

 

Q2: U Etsa Filter ea RF Joang?

 

Ka kakaretso, li-filters tsa RF li entsoe ka li-resonator tse kopantsoeng 'me li entsoe ka likaroloana tse sa sebetseng tse kang li-capacitor, li-inductors, le (hangata) li-transformer tsa RF, tseo e leng li-inductors tse kopantsoeng. Li-filters hangata li na le mela, 'me ha ho hlokahala mofuta o itseng oa amplifier li ka kopanngoa le li-amplifier tsa RF tse kenngoeng ke RF transistors (ebang ke bipolar kapa field-effect). Lisefe lia hlokahala ha ho tluoa tabeng ea ho sefa mats'oao a sa batleheng ho kena mahlaleng a seea-le-moea. Li sebelisoa hammoho le lisebelisoa tse fapaneng tsa elektroniki. Leha ho le joalo, ts'ebeliso ea eona ea bohlokoahali e ka har'a sebaka sa radio frequency.

 

Bakeng sa filthara e tlase, potoloho ea eona e lumellang likarolo tsa frequency frequency tse tlase le ho thibela likarolo tse ling kaofela tse phahameng tsa maqhubu li bitsoa "filter" e tlase. Lebitso LPF ka bolona le bonts'a maqhubu a tlase.

 

Ho ipapisitsoe le ts'ebeliso le boholo ba lisebelisoa tse se nang mohala, ho na le mefuta e mengata ea li-filters, ke hore, li-filter tsa cavity, li-filters tsa planar, li-electric filters, li-filters tsa dielectric, coaxial filters (tse sa amaneng le coaxial cable) le tse ling.

 

FMUSER ke moetsi ea hloahloa oa Lisebelisoa tsa RF harmonics. Re na le pokello ea tsebo ea lisebelisoa tsa khaso le sehlopha sa botekgeniki ka ho fetesisa. Haeba u na le lipotso mabapi le li-filters tsa RF nakong ea ho bala karolo ena, Rea u amohela ho botsa sehlopha sa rona sa tekheniki bakeng sa tšehetso.

 

Q3: Ho na le Mefuta E Mengata ea Sefaele sa RF 'me Hantle-ntle ke Eng?

 

Li-filters tsa Radio Frequency ke mofuta o ikhethileng oa potoloho o lumellang mats'oao a nepahetseng hore a fete ha a ntse a hlakola matšoao a sa batleheng. Ha ho tluoa tabeng ea topology ea filthara, ho na le mefuta e mene ea mantlha ea RF filter, ke hore; lebelo le phahameng; band pass; le ho hana sehlopha (kapa li-filters tsa notch). Li-filters tse tloaelehileng tsa RF li na le sebopeho sa lere, 'me "boemo" ba likarolo (li-inductors le li-capacitor) ke tsona tse hlalosang mofuta oa tsona; boleng ba likarolo li hlalosa mefuta e mengata ea maqhubu a matšoao ao ba a thibelang kapa a sa a thibeleng.

 

• Filter ea Low Pass - Sesefo sa Lowpass - LPF

 

Filter ea "low pass" ke eona e lumellang maqhubu a tlase hore a fete ka nako e le 'ngoe, e fokotsa maqhubu a mang le a mang. Palo ea phokotso ea maqhubu a lets'oao ha e feta har'a bandpass e etsoa qeto ke lintlha tse ngata tse kang filthara topology, sebopeho, le boleng ba likarolo, joalo-joalo. Ho feta moo, topology ea filthara e boetse e etsa qeto ea hore na filthara e tla fetoha kapele hakae ho tloha passband e le hore e fihlelle ho lahloa ha eona.

 

 

 

Li-filters tse tlase li tla ka mefuta e fapaneng e fapaneng. Tšebeliso e ka sehloohong ea sefe sena ke ho hatelloa ha li-harmonics tsa RF amplifier. Tšobotsi ena ke ea bohlokoa kaha e thusa ho thibela litšitiso tse sa batleheng ha ho tluoa tabeng ea lihlopha tse fapaneng tsa phetisetso. Haholo-holo, li-filters tse tlase li sebelisoa lits'ebetsong tsa molumo le ho sefa lerata ho tsoa potolohong efe kapa efe e kantle. Kamora hore mats'oao a maqhubu a phahameng a sefiloe, maqhubu a mats'oao a hlahisoang a fumana boleng bo hlakileng le bo hlakileng.

 

• Setlhopha sa High Pass - Sesefa sa Highpass - HPF

 

Ho fapana le filthara ea "low pass", "high pass filter" (HPF) e lumella feela hore lets'oao le phahameng le fete. Ha e le hantle, li-filters tse phahameng li lumellana haholo le li-filters tse tlaase, kaha ka bobeli li ka sebelisoa hammoho ho hlahisa filimi ea bandpass. Moralo oa sefe e holimo o otlolohile ebile o kokobetsa maqhubu a tlase ho feta moeli.

 

 

 

Hangata, li-filters tse phahameng li sebelisoa litsamaisong tsa molumo tseo ka tsona maqhubu ohle a tlase a tlhotliloeng. Ho phaella moo, e sebelisetsoa ho tlosa li-bass ho libui tse nyenyane, 'me maemong a mangata; li-filters tsena li hahiloe ka ho khetheha ho libui. Leha ho le joalo, haeba ho tluoa tabeng ea morero ofe kapa ofe oa DIY, li-filters tse phahameng li ka kenngoa habonolo tsamaisong.

 

• Sesefa sa Band Pass - Sesefa sa Bandpass - BPF

 

Setlhopha sa bandpass (BPF) ke potoloho e lumellang mats'oao a tsoang ho maqhubu a mabeli a fapaneng hore a fete le ho fokotsa mats'oao a sa fihleng kahare ho sebaka sa ona sa kamohelo. Boholo ba li-filters tsa bandpass li itšetlehile ka mohloli ofe kapa ofe oa matla a ka ntle 'me li sebelisa likarolo tse sebetsang, ke hore, li-circuits le li-transistors tse kopanetsoeng. Mefuta e joalo ea li-filters e bitsoa "active bandpass filters". Ka lehlakoreng le leng, lihlopha tse ling tsa li-filters ha li sebelise mohloli oa matla o ka ntle, 'me li itšetlehile haholo ka likaroloana tse sa sebetseng, ke hore, li-inductors le capacitor. Lisefe tsena li tsejoa e le li-filters tsa passive bandpass.

 

 

Li-filters tsa Band pass hangata li sebelisoa ho li-receiver le li-transmitters tse se nang mohala. Mosebetsi oa eona o ka sehloohong ho transmitter ke ho lekanyetsa bandwidth ea lets'oao la tlhahiso ho bonyane e le hore data e hlokahalang e ka fetisoa ka lebelo le sebopeho se lakatsehang. Ha ho tluoa ho moamoheli, filthara ea "band pass" e lumella feela palo e lakatsehang ea maqhubu hore a khethoe kapa a utluoe, ha a ntse a khaola mats'oao a mang a tsoang ho maqhubu a sa batleheng.

 

 

Ka kakaretso, ha filthara ea bandpass e entsoe hantle, e ka eketsa boleng ba matšoao habonolo, ha ka nako e ts'oanang e ka fokotsa tlholisano kapa tšitiso lipakeng tsa matšoao.

 

• Sehlopha se Hana Sesefa - Sesefa sa Band Stop - Hana Sefe - BSF

 

Ka linako tse ling e tsejoa e le band stop filter (BSF), band reject ke sefe se lumellang boholo ba maqhubu hore a fete a sa fetoloa. Leha ho le joalo, e fokotsa maqhubu a joalo a oelang ka tlase ho mefuta e khethehileng haholo. E sebetsa hantle ka tsela e fapaneng le ea filthara ea bandpass.

 

 

Ha e le hantle, mosebetsi oa eona ke ho fetisa maqhubu ho tloha ho zero ho ea sebakeng sa pele se khaotsoeng sa maqhubu. Har'a lipakeng, e fetisa maqhubu ohle a kaholimo ho sebaka sa bobeli se khaotsoeng sa maqhubu. Leha ho le joalo, e hana kapa e thibela maqhubu a mang kaofela a lipakeng tsa lintlha tsena tse peli.

 

 

Ka kakaretso, filthara ke ntho e lumellang matšoao ho feta ka thuso ea passband. Ho boletse joalo, setopo se sefang ke moo maqhubu a itseng a hanoang ke sefe efe kapa efe. Ebang ke phallo e phahameng, pase e tlase, kapa bandpass, sefe se loketseng ke sona se sa bontsheng tahlehelo ho passband. Leha ho le joalo, ha e le hantle, ha ho na ntho e kang filter e loketseng kaha bandpass e tla lahleheloa ke makhetlo a mangata 'me ha ho khonehe ho fumana ho lahloa ho sa feleng ha ho tluoa tabeng ea ho emisa.

 

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