Ukuhlukaniswa kwendilinga kwesandla sokudla (RHCP) kanye nokuhlukaniswa kwendilinga kwesandla sobunxele (LHCP)chaza indlela i-vector yensimu kagesi ejikeleza ngayo njengoba igagasi le-electromagnetic lisakazeka. Ukuhlonza okulungile kubalulekile ekuxhumaneni kwesathelayithi, i-radar, ukulinganiswa kwe-antenna kanye nezinye izinhlelo ze-RF ngoba ama-antenna athumelayo nawamukelayo kumele asebenzise i-polarization ehambisanayo ukuze kufezwe ukudluliselwa kwamandla okuphumelelayo.
Lo mhlahlandlela uchaza indlela yokubuka, umthetho wesandla osebenzayo, ubudlelwano bensimu nengxenye, isilinganiso se-axial kanye nezincazelo eziyinhloko okufanele uzihlole lapho ukhetha i-antenna egobile eyindilinga.
Izibonelo ze-RF MISO Circularly Polarized Horn Antenna
I-RF MISO inikeza amamodeli e-antenna empondo ejikelezayo ahlukaniswe ngama-band okusebenza akhethiwe. Izibonelo ezingezansi zibonisa izinketho ezahlukene zebanga lemvamisa; qinisekisa njalo ukubamba ngesandla, isilinganiso se-axial, inzuzo, isikhombimsebenzisi kanye nedatha yemishini kudatha yemodeli yamanje ngaphambi kokukhetha.
I-RM-CPHA82124-20| I-antenna yophondo oluyindilinga olune-polarized engu-8.2–12.4 GHz
I-RM-CPHA1840-12| I-antenna yophondo oluyindilinga olune-polarized engu-18–40 GHz
RM-CPHA218-16| I-antenna yophondo oluyindilinga olune-polarized engu-2–18 GHz
Hlola isigaba esiphelele: Ama-antenna e-RF MISO ajikelezayo okupolarization horn, kufaka phakathi i-RHCP, i-LHCP kanye nezinketho ze-polarization eziyindilinga ezimbili ngemodeli.
Kuyini ukuhlukaniswa kwe-Circular Polarization?
I-Polarization ichaza indlela elandelwa yi-electric-field vector endaweni eqondile esikhaleni. Ku-linear polarization, i-vector ihlala emgqeni oqondile. Ku-polarization eyindilinga efanele, ubukhulu bayo abuguquguquki kuyilapho i-vector ijikeleza ngama-degree angu-360 ngesikhathi somjikelezo ngamunye we-RF. Ama-antenna asebenzayo ngokuvamile akhiqiza indlela e-elliptical kancane, ngakho-ke ukujikeleza kuhlolwa yi-isilinganiso se-axialIgagasi elijikelezile elinopolarized elifanele linesilinganiso se-axial esingu-0 dB; isilinganiso se-axial esilinganiselwe esiphansi sibonisa i-polarization eseduze nendilinga.
I-polarization eyindilinga ingakhiwa izingxenye ezimbili zensimu eqondile ene-amplitude elinganayo kanye nomehluko wesigaba sama-degree angu-90 noma angu-plus. Isibonakaliso salowo budlelwano besigaba se-quadrature sinquma ukuthi igagasi liyi-RHCP noma i-LHCP ngaphansi komthetho oshiwo.
I-RHCP vs LHCP: Chaza Umhlangano Wokubuka
Isandla singabonakala siphendukezelwe uma insimu efanayo ejikelezayo ibukwa ngezindlela eziphambene. Ukuze ugweme ukungaqondakali, hlala usho isiqondiso sokubuka. Ngaphansi komthetho we-IEEE osetshenziswa kakhulu, isandla sichazwa ngenkathi ubhekaekuqondeni kokusabalala kwamagagasi, kusukela emthonjeni kuya ohlangothini lohambo.
Indlela ewusizo ukukhomba isithupha sakho ohlangothini lokusabalala. Uma ukujikeleza kwensimu kagesi kulandela ukugoba kweminwe esandleni sakho sokunene, igagasi liyi-RHCP ngaphansi kwalesi simiso; uma lilandela ukugoba kwesobunxele, liyi-LHCP. Ngenxa yokuthi eminye imibhalo nezifundo zisebenzisa umbono ohlukile wokubuka, qinisekisa lesi simiso kudatha ye-antenna kanye nenqubo yokuhlola ngaphambi kokuqhathanisa imiphumela.
Izingxenye Zensimu Nobudlelwano Besigaba
Cabanga ngezingxenye ezimbili zamagagasi endiza ezihamba nge-z-axis. Ingxenye eyodwa yensimu kagesi iqondiswe ku-x nge-amplitude Ex; eyesibili iqondiswe ku-y kanye ne-amplitude Ey. Isamba sabo sevektha sinquma isimo sokwehlukanisa esiphumelayo.
Uma kukhona ingxenye eyodwa kuphela, igagasi lihlukaniswa ngomugqa kuleyo axis. Uma zombili izingxenye zikhona, ubukhulu bazo obuhlobene kanye nesigaba kunquma ukuthi umphumela uwukwahlukana okuqondile, okuyisiyingi noma okusaqanda.
Ubudlelwano bensimu bungafingqwa kanje:
- Uma u-Exakuyona i-zero futhi i-Eykungu-zero, i-polarization iqondile eceleni kuka-x.
- Uma u-Eyakuyona i-zero futhi i-Exkungu-zero, i-polarization iqondile eceleni kuka-y.
- Uma zombili izingxenye zisesigabeni, i-vector sum yazo ihlala iqondile nge-engeli eqondile.
- Uma izingxenye zine-amplitude elinganayo kanye nomehluko wesigaba sama-degree angu-90 noma angu-90, umphumela uba yi-polarization eyindilinga efanele.
Uma izingxenye ze-orthogonal zingalingani, noma umehluko wesigaba ungewona ama-degree angu-90 ngqo, insimu ilandelela i-ellipse kunokuba ibe yindilinga. Yingakho ishidi ledatha le-antenna kufanele licacise isilinganiso se-axial phezu kwemvamisa futhi, lapho kufanele khona, ngaphezu kokumbozwa kwe-angular okuhlosiwe. I-handedness yodwa ayichazi ikhwalithi ye-polarisation.
Kungani Ukufanisana Kwe-Polarization Kubalulekile
I-antenna eyamukelayo ikhipha amandla amakhulu atholakalayo uma i-polarization yayo ifaniswa negagasi elingenayo. Izimo ze-polarization eziyindilinga eziphambene nazo zi-orthogonal, ngakho-ke ukungafani kwe-RHCP/LHCP kungadala ukulahlekelwa okukhulu kwe-polarization. Ama-antenna angempela ahlinzeka ngokwenqatshwa kwe-cross-polarization okulinganiselwe, futhi ukusebenza okulinganisiwe nakho kuncike ku-axial ratio, ukulungelelaniswa, ukubonakaliswa kanye nendawo yokuhlola ezungezile.
Ukukhanya okuvela ezindaweni eziqhubayo kungashintsha isimo esibonakalayo se-polarization, futhi ama-radome, ama-fixtures noma izakhiwo eziseduze zingase ziphazamise insimu. Ukuze uqinisekise ngokwethembeka, vumelanisa womabili ama-antenna ku-boresight, sebenzisa ireferensi eyaziwayo ye-polarization, qhathanisa amandla atholiwe okulungiselelwa kwe-RHCP ne-LHCP, bese ulinganisa isilinganiso se-axial kanye nokusebenza kwe-cross-polarization kulo lonke ibhendi elidingekayo.
Indlela Yokukhetha i-RHCP noma i-LHCP Antenna
Ngaphambi kokukhetha i-antenna yophondo oluyindilinga olune-polarized, chaza imfuneko yokusebenza ephelele kunokukhetha ngokuvama kuphela:
- Ububanzi bemvamisa:qinisekisa ukumbozwa kwebhendi ephelele, hhayi nje kuphela imvamisa ephakathi.
- Ukwehlukaniswa:cacisa i-RHCP, i-LHCP noma i-dual circle polarization kanye ne-handedness convention.
- Isilinganiso se-Axial:hlola umkhawulo odingekayo phakathi kwemvamisa kanye nokumbozwa kwe-angular.
- Ukwanda kanye nobubanzi be-beamwidth:isabelomali sesixhumanisi sokufanisa, ukumbozwa kanye nezidingo zokulinganisa ibanga.
- Umdlalo we-Impedance:buyekeza i-VSWR noma ukubuyiselwa kwemali ngaphezulu kwebhendi ephelele.
- Isixhumi esibonakalayo se-RF namandla:qinisekisa isixhumi noma isikhombikubona se-waveguide kanye nezidingo zokuphatha amandla.
- Ukuhlanganiswa kwemishini:qinisekisa imvilophu, isikhombikubona sokufaka, ukuqondisa kanye nezidingo zemvelo.
Khuluma nochwepheshe we-RF MISO Antenna
I-RF MISO ingumkhiqizi nomhlinzeki we-antenna ye-RF kanye ne-microwave. Yabelana ngebanga lakho lokuvama, ukusekelwa okudingekayo, inzuzo, isilinganiso se-axial, imikhawulo yokuxhumana kanye nokufakwa ukuze ithimba lethu likwazi ukusiza ekutholeni imodeli ejwayelekile efanelekile noma lixoxe ngezidingo zohlelo lokusebenza.
Buka ama-antenna e-polarization horn ayindilinga|Xhumana ne-RF MISO
Isikhathi sokuthunyelwe: Meyi-21-2024
