Sichuan Keenlion Microwave Technology——Zosefera
Sichuan Keenlion Microwave Technology Yakhazikitsidwa mu 2004, Sichuan Keenlion Mircrowave techenology CO., Ltd. ndi omwe amapanga zida za Passive Mircrowave ku Sichuan Chengdu, China.
Timapereka zigawo za mirrowave zogwira ntchito kwambiri ndi ntchito zina zofananira ndi ntchito za microwave kunyumba ndi kunja. Zogulitsazo ndizotsika mtengo, kuphatikiza zogawa mphamvu zosiyanasiyana, zolumikizira zowongolera, zosefera, zophatikizira, ma duplexer, zida zongopanga zokha, zodzipatula komanso zozungulira. Zogulitsa zathu zidapangidwa mwapadera kuti zizitha kusiyanasiyana komanso kutentha kwambiri. Zofotokozera zitha kupangidwa molingana ndi zomwe makasitomala amafuna ndipo zimagwira ntchito pamagulu onse odziwika komanso otchuka omwe ali ndi ma bandwidth osiyanasiyana kuchokera ku DC mpaka 50GHz.
Fyulutayo imatha kusefa pafupipafupi ma frequency amtundu wina mu chingwe chamagetsi kapena ma frequency ena kupatula ma frequency point, kupeza chizindikiro champhamvu cha ma frequency enaake, kapena kuchotsa chizindikiro champhamvu chapawiri.
Mawu Oyamba
Fyuluta ndi chipangizo chosankhidwa chomwe chimalola kuti gawo lafupipafupi la sigino lidutsidwe, ndipo zigawo zina zafupipafupi zimachepetsedwa kwambiri. Kusankha kumeneku pogwiritsa ntchito fyuluta kumatha kusefedwa kuchokera kuphokoso losokoneza kapena kusanthula ma sipekitiramu. Mwanjira ina, imatchedwa fyuluta yomwe imatha kupangitsa kuti gawo linalake mu sigino lidutse, ndikuchepetsa kwambiri kapena kupondereza zigawo zina zama frequency. Fyuluta ndi chipangizo chomwe chimasefedwa ndi mafunde. "Wave" ndi lingaliro lotakata kwambiri lakuthupi, m'munda waukadaulo wamagetsi, "wave" imangokhala pang'onopang'ono pakuchotsa mtengo wamitundu yosiyanasiyana pakapita nthawi. Njirayi imasinthidwa kukhala nthawi yogwiritsira ntchito mphamvu yamagetsi kapena yamakono kudzera mumitundu yosiyanasiyana ya thupi, kapena zizindikiro. Popeza nthawi yodzisintha yokha ndi mtengo wopitilira, imatchedwa chizindikiro cha nthawi yopitilira, ndipo nthawi zambiri imatchedwa chizindikiro cha analogi.
Sefa ndi lingaliro lofunikira pakukonza ma siginecha, ndipo ntchito ya kusefa dera mu DC voteji wowongolera ndikuchepetsa gawo la AC mumagetsi a DC momwe ndingathere, kusunga chopangira chake cha DC, kuti chiwongolero chamagetsi chitsitsidwe, mawonekedwe a waveform amakhala Osalala.
Tma parameters ake:
Pafupipafupi f0 ya passband ya fyuluta, nthawi zambiri imatenga f0 = (f1 + f2) / 2, f1, f2 ngati gulu lodutsa kapena fyuluta yokana kumanzere, moyang'anizana ndi 1 dB kapena 3DB m'mphepete pafupipafupi. Fyuluta ya narrowband nthawi zambiri imawerengera bandwidth ya passband ndi mfundo yaying'ono kwambiri yotayika.
Tsiku lomalizira: Zimatanthawuza njira yopita ku njira ya passband ya low pass pass ndi gulu lodutsa la high pass fyuluta. Nthawi zambiri amatanthauzidwa mu malo otayika achibale a 1 dB kapena 3DB. Kutayika kwachidziwitso kwachibale ndi: kutsika kotsika kumatengera kuyika kwa DC, ndipo Qualcomm imachokera kufupipafupi kokwanira kwa mzere wa parasitic.
Passband bandwidth: imatanthawuza kukula kwa sipekitiramu yofunikira kuti idutse, BW = (F2-F1). F1, F2 imachokera ku kutayika koyika pakatikati pafupipafupi F0.
Kutayika kwa kulowetsa: Chifukwa cha kuyambitsidwa kwa fyuluta kumlengalenga wa chizindikiro choyambirira mu dera, zotayika zapakati kapena mafupipafupi odulidwa, monga kufunikira kuti gulu lonse liwonongeke kuti litsindike.
Ripple: Zimatanthawuza ku 1DB kapena 3DB bandwidth (cutoff frequency) range, kutayika koyikirako kumasintha nsonga yafupipafupi pamapindikira otayika.
Kusintha kwamkati: Kutayika kolowetsa mu bandi yodutsa ndi ma frequency osiyanasiyana. Kusinthasintha kwa gulu mu 1db bandwidth ndi 1db.
In-band standby: Muyezetse ngati chizindikiro mu passband mu fyuluta ndi bwino kufanana kufala kwa kufala. Match Oyenera VSWR = 1: 1, VSWR ndi yayikulu kuposa 1 ikasemphana. Pazosefera zenizeni, bandwidth yokhutiritsa VSWR ndi yochepera 1.5: 1 nthawi zambiri imakhala yocheperako kuposa BW3DB, yomwe imawerengera gawo la BW3DB ndi dongosolo la fyuluta ndikuyika kutayika.
Kutayika kwa mizu: Chiwerengero cha ma decibels (DB) cha mphamvu yolowetsa chizindikiro cha doko ndi mphamvu yowonetsera ndi yofanana ndi 20 Log 10ρ, ρ ndi voteji yowonetsera mphamvu. Kutayika kobwerera kulibe malire pamene mphamvu yolowetsa imatengedwa ndi doko.
Kuchulukitsa kwa kupsinjika kwa strip: chizindikiro chofunika cha khalidwe la kusankha fyuluta ntchito. The apamwamba chizindikiro, bwino kunja kusokoneza chizindikiro kupondereza. Nthawi zambiri pamakhala mitundu iwiri yamalingaliro: njira yopondereza kuchuluka kwa DB kuletsa kwa gulu lomwe limadutsa pafupipafupi fs, njira yowerengera ndi FS kuchepa; chizindikiro china cha maganizo a chizindikiro fyuluta ulusi ndi njira yabwino amakona anayi - makonakiti amakona anayi (KXDB ndi wamkulu kuposa 1), KXDB = BWXDB / BW3DB, (X kungakhale 40dB, 30dB, 20DB, etc.). Makona amakona anayi, amakwera pamakona anayi - ndiko kuti, kuyandikira kwamtengo wapatali 1, ndipo zovuta kupanga kupanga ndizokulirapo.
Kuchedwa: Chizindikirocho chimatanthawuza nthawi yofunikira kuti chizindikirocho chisamutsire gawo la diagonal frequency, ndiye kuti, TD = DF / DV.
Mzere wa in-band phase: Izi chizindikiro makhalidwe fyuluta ndi gawo kupotoza kwa chizindikiro chofalitsidwa mu passband. Fyuluta yopangidwa ndi mzere woyankha wagawo ili ndi mzere wabwino.
Gulu lalikulu
Agawika mu fyuluta ya analogi ndi fyuluta ya digito malinga ndi chizindikiro chomwe chikukonzedwa.
Njira yodutsa sefayi imagawidwa kukhala yotsika, kupita kwapamwamba, bandpass, ndi fyuluta yonse.
Zosefera zotsika:imalola zigawo zotsika kwambiri kapena za DC mu siginecha kuti zidutsidwe, kupondereza zigawo zapamwamba kwambiri kapena kusokoneza ndi phokoso;
Zosefera za High-pass: imalola kuti zigawo zamtundu wamtundu wapamwamba zidutsidwe, kupondereza ma frequency otsika kapena zigawo za DC;
Sefa ya Band Pass: Zimalola kuti zizindikiro zidutsedwe, zizindikiro zoponderezedwa, kusokoneza, ndi phokoso pansi kapena pamwamba pa gulu;
Zosefera za Beltable: Imapondereza ma siginecha mkati mwa ma frequency band amalola ma siginecha ena kupatula gululo, lomwe limadziwikanso kuti notch fyuluta.
Zosefera zonse: Fyuluta yodutsa-yonse imatanthawuza kuti matalikidwe a chizindikiro sichidzasintha mkati mwa chiwerengero chonse, ndiko kuti, kupindula kwa matalikidwe amtundu wathunthu ndi kofanana ndi 1. Zosefera zonse zodutsa zonse zimagwiritsidwa ntchito popanga gawo, ndiko kuti, gawo la kusintha kwa chizindikiro cholowetsamo, ndipo choyenera ndi chakuti kusintha kwa gawo kumayenderana ndi mafupipafupi, omwe ali ofanana ndi dongosolo lochedwa nthawi.
Zonse zomwe zimagwiritsidwa ntchito ndizosefera zopanda pake komanso zogwira ntchito.
Kutengera ndi kuyika kwa fyulutayo, nthawi zambiri imagawidwa kukhala fyuluta ya mbale ndi fyuluta yamagulu.
Pa bolodi, ikani pa bolodi, monga PLB, zosefera za JLB. Ubwino wa fyulutayi ndi wandalama, ndipo kuipa kwake ndikuti kusefa pafupipafupi sikwabwino. Chifukwa chake chachikulu ndi:
1. Palibe kudzipatula pakati pa kulowetsa ndi kutuluka kwa fyuluta, yomwe imakonda kugwirizanitsa;
2, kulepheretsa kuyika kwa fyuluta sikutsika kwambiri, kufooketsa mphamvu yodutsa pafupipafupi;
3, chidutswa cholumikizira pakati pa fyuluta ndi chassis chidzabweretsa zovuta ziwiri: imodzi ndi kusokoneza kwa ma elekitiroma mkatikati mwa chassis, yomwe imayendetsedwa mwachindunji pamzerewu, pa chingwe, ndikuwunikira fyuluta pogwiritsa ntchito ma radiation a chingwe. Kulephera; china ndi chakuti kusokoneza kunja kumasefedwa ndi fyuluta fyuluta pa bolodi, kapena ma radiation amapangidwa mwachindunji kapena mwachindunji kwa dera pa bolodi dera, kumabweretsa mavuto tilinazo;
Zosefera zamagulu osiyanasiyana, zolumikizira zosefera ndi zosefera zina nthawi zambiri zimayikidwa pagulu lachitsulo la chassis chotchinga. Popeza imayikidwa mwachindunji pazitsulo zachitsulo, zolowetsa ndi zotulutsa zosefera zimakhala zolekanitsidwa, nthaka imakhazikika bwino, ndipo kusokoneza kwa chingwe kumasefedwera pa doko la chassis, kotero kuti kusefa kumakhala koyenera.
Zosefera zopanda pake ndi sefa yozungulira yomwe imagwiritsa ntchito chopinga, chowongolera, ndi gawo la capacitor. Pamene resonant pafupipafupi, dera impedance mtengo ndi kochepa, ndipo dera impedance ndi lalikulu, dera chigawo mtengo kusintha kwa mbali harmonic pafupipafupi, ndi harmonic panopa akhoza kusefedwa; pamene ma frequency angapo amtundu wa ma harmonic Dongosolo lokonzekera limapangidwa, ndiye kuti mawonekedwe ofananirako amatha kusefedwa, ndikusefa nambala yayikulu ya ma harmonic (3, 5, 7) imatheka ndi njira yotsika yolowera. Mfundo yaikulu ndi ya mitundu yosiyanasiyana ya ma harmonics, kupanga mafupipafupi a harmonic ndi ang'onoang'ono, kukwaniritsa kugawanika kwa mphamvu ya harmonic panopa, kupereka njira yolambalala kwa ma harmonics osankhidwa bwino kuti akwaniritse kuyeretsedwa kwa mafunde.
Zosefera za Passive zitha kugawidwa m'masefa a capacitive, zosefera zamagetsi zamagetsi, zosefera za L-RC, zozungulira za RC zooneka ngati π, zosefera zamitundu yambiri za RC, ndi zosefera za LC zooneka ngati π. Dinani kuti mugwiritse ntchito sefa imodzi yosinthira, zosefera zapawiri, ndi zosefera zapamwamba. Zosefera zopanda pake zili ndi izi zabwino izi: kapangidwe kake ndi kosavuta, ndalama zogulira ndizotsika, ndipo gawo lokhazikika pamakina limatha kubweza mphamvu yamagetsi mudongosolo. Imawonjezera mphamvu ya gridi; kukhazikika kogwira ntchito ndikwapamwamba, kukonza kumakhala kosavuta, kusasitsa kwaukadaulo, ndi zina zambiri. Pali mbali zambiri za zofooka za zosefera zopanda pake: zotsatira za magawo a gridi yamagetsi, mtengo wa impedance wa dongosolo ndi chiwerengero chachikulu cha ma frequency a resonant nthawi zambiri amasintha monga momwe ntchito zikuyendera; fyuluta ya harmonic ndi yopapatiza, chiwerengero chachikulu chokha cha nthawi zazikulu zomwe zimatha kusefedwa Harmonics, kapena chifukwa cha zotsalira zofanana, kukulitsa ma harmonics; kugwirizana pakati pa kusefa ndi kubweza kwachangu ndi kuwongolera kuthamanga; monga momwe madzi akudutsa mu fyuluta, angayambitse kuchulukira kwa zida; Zomwe zimagwiritsidwa ntchito ndizokulirapo, kulemera kwake ndi kuchuluka kwake; kukhazikika kwa magwiridwe antchito ndikotsika. Chifukwa chake, fyuluta yogwira ntchito yomwe imagwira bwino ntchito imakhala yochulukirachulukira.
Titha kusinthanso magawo a rf passive malinga ndi zomwe mukufuna. Mutha kulowa patsamba losintha kuti mupereke zomwe mukufuna.
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Nthawi yotumiza: Feb-09-2022
