RF Sefa muRadio Broadcasting

 

Mukutaura neredhiyo, iyo RF sefa chinhu chakakosha chemagetsi mudziyo. Mukufambisa masaini eredhiyo, pachagara paine mabhendi atisingade, semamwe masaini asina kufanira emanyepo; kana zvimwe nekuda kwezvimwe zvikonzero zvakakosha, hatidi yakati wandei frequency mumasaini eredhiyo. Panguva ino, isu tinofanirwa kusefa kunze zvisingadiwe frequency mabhendi kuburikidza neRF mafirita. Saka rudzii rwemagetsi emidziyo iyo RF firita uye nei zvichikosha zvakadaro? Mugove uyu ndewekupindura mubvunzo uyu.

 

Kugovera Kuchengeta!

 

Chii chinonzi RF Sefa

 

RF sefa sefa yemagetsi, inoshandiswa kubvisa kana kuchengetedza mamwe ma frequency mabhendi mumasaini eredhiyo. Inowanzo shandiswa kugadzira masaini muhuwandu hweMHz kusvika KHz (MF kusvika EHF). Inoshandiswa kumidziyo yekutepfenyura redhiyo, midziyo yekutaurirana isina waya, michina yeterevhizheni, inosanganisira akasiyana ma transmitters uye anogamuchira. Inoshandiswa kuona kuti mamwe masaini emanyepo asingafambiswe mukutepfenyura, uye chikamu chemasaini anodiwa chichachengetwa.

 

Munhepfenyuro yeredhiyo, RF sefa chinhu chakakosha chemagetsi chikamu, nekuti mumasaini eredhiyo, mukuwedzera kune chikamu chatinoda, pane zvimwe zvatisingade. Naizvozvo, isu tinoda RF mafirita kuti abvise zvikamu zvisingadiwe. Kana iwe uchida kushandisa RF sefa kushanda muFM renji, simbisa iyo pass frequency renji kana kudzvanya frequency renji yakamaka paRF sefa iri pakati pe88 - 108MHz.

 

Mabasa Akasiyana RF Mafirita

 

Kazhinji kutaura, mafirita akasiyana ane mabasa mana mukutepfenyura redhiyo

Yepasi Yekupfuura Firita

Iyo Low pass sefa iri sefa inongobvumira yakaderera frequency kupfuura. Iyo ichacheka frequency bhendi yakakwirira kupfuura imwe frequency. Ichi chikamu chefrequency bhendi chichadzvanywa uye chisingabvumidzwe kupfuura.

Inowanzo shandiswa kusefa ruzha kubva kumatunhu ekunze mumasaini masaini. Iwo masaini masaini akagadziriswa neakaderera pass sefa ane hunhu hwakajeka.

Yakakwira Pass Firita

Kwete. iyo yakakwirira pass sefa inongobvumira mafrequency epamusoro kuti apfuure nekucheka frequency bhendi pazasi peimwe frequency. Chiratidzo cheaudio mubhendi ichi chichadzvanyirirwa.

Inowanzo shandiswa kubvisa mabhesi kubva kune vatauri vadiki, saka high pass filter inowanzovakwa mumukurukuri.

Bhendi Rakapfuura Sefa

Sefa yebhandi isefa inobvumira imwe nhanho ye frequency masaini kuti ipfuure uye inodzvanyirira mamwe masaini asiri eiyi frequency bhendi. Iyo frequency renji inogona kupfuudzwa inogona kusarudzwa zvakasununguka uye inogona kuva maviri discontinuous siyana yemafrequency.

 

Inowanzo shandiswa mune dzisina waya dzinogamuchira uye transmitters. Basa rayo guru mudhipatimendi nderokudzikisa chikamu chisingadikanwi chezvikwangwani zvekubuda kuitira kuti data inodiwa inogona kuendeswa nekumhanya kunodiwa uye fomu mune shoma bandwidth. Mune inogamuchira, basa rayo guru nderekubvumira huwandu hunodiwa hwema frequency uye kucheka masaini emamwe ma frequency. Kuburikidza nekugadziriswa kweiyo bandpass sefa, iyo chiratidzo chemhando inogona kuvandudzwa kusvika pamwero mukuru uye kukwikwidza uye kukanganisa pakati pezvikwangwani zvinogona kuderedzwa.

Bhendi Mira Sefa

Basa re iyo bandstop sefa yakatarisana neyesefa yebhendi. Isefa inongodzvanyirira imwe mhando yemafrequency. Basa rayo rakafanana neiyo ye bandpass sefa, asi inoshanda nenzira dzakasiyana.

Kazhinji kutaura, zvisinei kuti imhando ipi yefirita, inyanzvi yemagetsi inobvumira kuti chiratidzo chipfuure nerubatsiro rwepassband. Muchidimbu, inyanzvi yemagetsi inoramba kufambiswa kwezviratidzo zveimwe mhando yefrequencies uye inobvumira kudarika kwezviratidzo zveimwe frequencies.

 

Sei RF Sefa Yakakosha?

 

Isu tinoziva basa reRF sefa ndere kubvumidza imwe nhanho yemafrequency kuti ipfuure uye kudzivirira mamwe mafrequency kuti asapfuure. Asi chii chiri revo yaikoku?

 

  • Kuvandudza kunaka kwezviratidzo -Mukutepfenyura redhiyo, mushure mekushandisa firita chaiyo yeRF, kukanganiswa kwechiratidzo kunogadzirwa nehurongwa hwekutaurirana kunogona kudzivirirwa zviri nyore, kuitira kuti mhando yeinodiwa frequency frequency ichengetedzwe.

 

  • Dzivisa kukanganiswa kwefrequency - Semuyenzaniso, nharembozha inoda imwe huwandu hwemabhendi mabhendi kuti ishande zvakajairwa. Kana pasina RF sefa yakakodzera, masaini emabhendi akasiyana-siyana haazokwanisa kupa masevhisi panguva imwe chete, kusanganisira Global Navigation Satellite System, kuchengetedzwa kweveruzhinji, Wi-Fi, nezvimwe.

 

Muchidimbu, inogona kuwedzera chikamu chezviratidzo zvemasaisai anodiwa muchiratidzo cheredhiyo nekudzvanyirira chiratidzo chemamwe ma frequency, kuitira kuti ivandudze kutendeka kwemasaini eredhiyo.

 

mhedziso

 

Uri kumhanyisa nhepfenyuro yako wega here? Uye iwe unofanirwa kutenga mamwe mafirita akakodzera emidziyo yako yekutepfenyura redhiyo? Iwo maRF mafirita kubva kuFMUSER ndidzo sarudzo dzako dzakanakisa! Senyanzvi redhiyo redhiyo inopa, tinopa akazara marudzi emhando yepamusoro passive components uye ichakupa mhinduro dzinokwanisika zvichienderana nemamiriro ako. Kana uine chero chaunoda mukutepfenyura redhiyo, ndapota sununguka taura nesu.

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