Rarrabawar da'ira ta hannun dama (RHCP) da Rarrabawar da'ira ta hannun hagu (LHCP)bayyana alkiblar da vector na filin lantarki ke juyawa yayin da raƙuman lantarki ke yaɗuwa. Daidaita ganewar asali yana da mahimmanci a cikin hanyoyin haɗin tauraron ɗan adam, radar, auna eriya da sauran tsarin RF saboda eriya masu watsawa da karɓa dole ne su yi amfani da polarization masu jituwa don cimma ingantaccen canja wurin wuta.
Wannan jagorar ta yi bayani game da yanayin kallo, ƙa'idar hannu mai amfani, dangantakar filin-sassan, rabon axial da manyan ƙayyadaddun bayanai don dubawa lokacin zaɓar eriya mai zagaye mai rarrafe.
Misalan Eriya Mai Ƙaho Mai Zagaye Mai Rarraba RF MISO
RF MISO tana samar da samfuran eriya mai ƙaho mai zagaye don zaɓaɓɓun madaukai na aiki. Misalan da ke ƙasa suna nuna zaɓuɓɓukan kewayon mita daban-daban; koyaushe suna tabbatar da hannun hannu, rabon axial, riba, haɗin kai da bayanan injiniya a cikin takardar bayanai ta samfurin na yanzu kafin zaɓi.
RM-CPHA82124-20| Eriya mai siffar ƙaho mai siffar 8.2–12.4 GHz mai zagaye
RM-CPHA1840-12| Eriya mai siffar ƙaho mai siffar 18–40 GHz mai zagaye
RM-CPHA218-16| Eriya mai siffar ƙaho mai zagaye 2–18 GHz
Bincika cikakken nau'in: Eriya mai siffar RF MISO mai zagaye, gami da zaɓuɓɓukan RHCP, LHCP da zaɓuɓɓukan polarization biyu ta samfuri.
Menene Rarraba Zagaye?
Polarization yana bayyana hanyar da vector na filin lantarki ya binciko a wani wuri mai tsayayye a sararin samaniya. A cikin polarization na layi, vector yana kan layi madaidaiciya. A cikin polarization na zagaye mai kyau, girmansa yana canzawa yayin da vector ke juyawa ta digiri 360 a kowane zagayen RF. Eriya masu amfani galibi suna samar da hanya mai ɗan elliptical, don haka ana kimanta zagaye ta hanyarrabon axialKyakkyawan raƙuman da aka raba da'ira mai siffar polarized yana da rabon axial na 0 dB; ƙaramin rabon axial da aka auna yana nuna rabuwar kusa da da'ira.
Ana iya samar da rarrabuwar da'ira ta hanyar ɓangarorin filin layi biyu na orthogonal tare da girman daidai da kuma bambancin mataki na ƙari ko rage digiri 90. Alamar wannan dangantakar matakin quadrature tana ƙayyade ko raƙuman ruwa RHCP ne ko LHCP a ƙarƙashin yarjejeniyar da aka ambata.
RHCP vs LHCP: Bayyana Yarjejeniyar Kallon Kallo
Hannun hannu na iya bayyana a juye idan aka kalli filin juyawa iri ɗaya daga akasin haka. Don guje wa rashin tabbas, koyaushe a faɗi alkiblar lura. A ƙarƙashin al'adar IEEE da aka saba amfani da ita, ana bayyana hannun hannu yayin kalloa cikin hanyar yaɗuwar raƙuman ruwa, daga tushe zuwa ga alkiblar tafiya.
Hanya mai amfani ita ce a nuna babban yatsanka zuwa ga hanyar yaɗawa. Idan juyawar filin lantarki ta bi lanƙwasa yatsun hannunka na dama, raƙuman ruwa suna RHCP a ƙarƙashin wannan al'ada; idan ya bi lanƙwasa na hannun hagu, LHCP ne. Saboda wasu takardu da fannoni suna amfani da wani hangen nesa daban na kallo, tabbatar da al'adar a cikin takardar bayanai ta eriya da kuma tsarin gwaji kafin a kwatanta sakamako.
Sassan Fili da Alaƙar Mataki
Ka yi la'akari da ɓangarorin raƙuman jirgin sama guda biyu da ke tafiya tare da axis na z. Ɗaya daga cikin sassan filin lantarki yana daidaitacce tare da x tare da girma Ex; na biyu yana daidaitacce tare da y tare da girma EyJimlar vector ɗinsu tana ƙayyade yanayin rarrabuwar da ke faruwa.
Idan akwai abu ɗaya kawai, raƙuman suna rabuwa a layi a kan wannan axis. Idan aka samu dukkan sassan biyu, girmansu da matakinsu na dangantaka suna tantance ko sakamakon ya kasance rabuwa a layi, zagaye ko elliptical.
Za a iya taƙaita dangantakar filin kamar haka:
- Idan Exba sifili ba ne kuma Eysifili ne, rabuwar kai tsaye ce tare da x.
- Idan Eyba sifili ba ne kuma Exsifili ne, polarization yana layi tare da y.
- Idan dukkan sassan biyu suna cikin tsari, jimlar vector ɗinsu ta kasance layi a kusurwar da aka saita.
- Idan sassan suna da girman daidai da kuma bambancin mataki na ƙari ko rage digiri 90, sakamakon shine kyakkyawan rarrabuwar zagaye.
Idan sassan orthogonal ba su daidaita ba, ko kuma bambancin mataki bai kai digiri 90 ba, filin yana bin diddigin ellipse maimakon da'ira. Wannan shine dalilin da ya sa takardar bayanai ta eriya ya kamata ta ƙayyade rabon axial akan mita kuma, inda ya dace, akan murfin kusurwar da aka nufa. Hannun hannu kaɗai ba ya bayyana ingancin polarization.
Me Yasa Daidaita Tsakanin Rarrabuwa Da Tsari Yana Da Muhimmanci
Eriya mai karɓa tana fitar da mafi girman ƙarfin da ake da shi idan aka daidaita polarization ɗinta da raƙuman da ke shigowa. Yanayin polarization na zagaye masu kyau da akasin haka suna da daidaito, don haka rashin daidaiton RHCP/LHCP na iya haifar da asarar polarization mai yawa. Eriya na gaske suna ba da ƙin yarda da polarization na ƙarshe, kuma aikin da aka auna ya dogara da rabon axial, daidaitawa, tunani da yanayin gwaji da ke kewaye.
Tunani daga saman da ke gudanar da aiki na iya canza yanayin rarrabuwar ra'ayi, kuma radomes, kayan aiki ko tsarin da ke kusa na iya karkatar da filin. Don tabbatarwa mai inganci, daidaita eriya biyu akan boresight, yi amfani da ma'anar rarrabuwar ra'ayi da aka sani, kwatanta ƙarfin da aka karɓa don saitunan RHCP da LHCP, kuma auna rabon axial da aikin watsawa tsakanin rabe-raben ra'ayi a cikin band ɗin da ake buƙata.
Yadda Ake Zaɓar Antenna na RHCP ko LHCP
Kafin zaɓar eriya mai siffar ƙaho mai zagaye, ƙayyade cikakken buƙatun aiki maimakon zaɓar ta mita kawai:
- Kewayon mita:tabbatar da cikakken ɗaukar hoto, ba kawai mitar tsakiya ba.
- Rarrabuwa:ƙayyade RHCP, LHCP ko polarization mai zagaye biyu da kuma yarjejeniyar mika hannu.
- Rabon axial:duba iyakokin da ake buƙata a fadin mita da kuma kusurwar rufewa.
- Riba da faɗin haske:kasafin kuɗi na haɗin gwiwa, ɗaukar hoto da buƙatun aunawa-nisa.
- Daidaitawar impedance:sake duba VSWR ko dawo da asarar akan cikakken band.
- Haɗin RF da ƙarfi:tabbatar da haɗin mahaɗi ko jagorar raƙuman ruwa da buƙatun sarrafa wutar lantarki.
- Haɗin injina:tabbatar da ambulaf, hanyar haɗawa, daidaitawa da buƙatun muhalli.
Yi magana da ƙwararren eriya ta RF MISO
RF MISO wani kamfanin kera eriya ne na RF da microwave kuma mai samar da ita. Raba kewayon mitar ku, ikon amfani da shi, riba, rabon axial, hanyar sadarwa da ƙuntatawa na shigarwa don ƙungiyarmu ta iya taimakawa wajen gano samfurin da ya dace ko tattauna buƙatun aikace-aikacen.
Lokacin Saƙo: Mayu-21-2024
