Impendulo esheshayo:I-antenna ye-log periodic iyi-antenna eqondisa i-broadband eyakhiwe ngokulandelana kwezinto ezikhipha imisebe ezilinganisiwe. Amaqembu ahlukene ezinto asebenza ngogesi kumaza ahlukene, okuvumela i-antenna eyodwa ukuthi ilondoloze izici ze-impedance eziwusizo kanye nemisebe kuyo yonke ibhendi yokusebenza ebanzi. Ama-antenna e-log periodic asetshenziswa kabanzi ekuhlolweni kwe-EMI/EMC, ukuqapha i-spectrum, ukulinganisa i-antenna, ukuthola isiqondiso kanye nezinhlelo ze-RF ze-broadband.
Iyini i-Antenna ye-Log Periodic?
A i-antenna yesikhathi sokubhalisa, evame ukufushaniswa ngokuthi i-LPA, umndeni we-antenna ozimele imvamisa oshintsha i-geometry kuphethini ye-logarithmic ephindaphindayo. Uhlobo oluvame kakhulu yi-log periodic dipole array (LPDA), esebenzisa izakhi ze-dipole zobude obuhlukahlukene kanye nezikhala ezihambisana ne-boom esekelayo.
Ngokungafani ne-antenna ye-narrowband eklanyelwe ubude obubodwa be-resonant obuphezulu, i-LPDA isebenzisa izakhi eziningana ezilinganisiwe ukumboza ama-frequency band akhethiwe. Kunoma iyiphi i-frequency yokusebenza, yiqembu lezakhi eziseduze ne-resonance kuphela elinikela kakhulu emisebeni. Lesi sifunda sibizwa ngokuthiisifunda esisebenzayoNjengoba imvamisa ishintsha, isifunda esisebenzayo sihamba eceleni kwe-array.
Isebenza Kanjani I-Antenna Yesikhathi Selogi?
Ubukhulu bezinto eziseduze buhlobene nesici sesikali, esivame ukumelelwa uhlamvu lwesiGreki u-tau. Ubude bezinto, isikhala kanye nezinye izilinganiso zilandela lobu budlelwano obulinganayo. Ngenxa yokuthi isakhiwo siphinda ngogesi lapho imvamisa ishintsha ngesilinganiso esifanayo, ukungasebenzi kahle kokufaka kanye nokuziphatha kwemisebe kungahlala kuzinzile ngokuqhathaniswa phezu kwebhande elibanzi.
Izinto ezinde kakhulu zisekela ingxenye yemvamisa ephansi yebanga lokusebenza, kuyilapho izinto ezimfushane kakhulu zisekela ingxenye yemvamisa ephezulu. Amandla adluliselwa ngohlelo lokuphakela olulinganiselayo, futhi ubudlelwano besigaba phakathi kwezinto eziseduze bukhiqiza umsebe oqondisayo. Ukuzuza kwangempela, ububanzi bomsebe, isilinganiso sangaphambili kuya emuva kanye nokulingana kwe-impedance kuncike ku-geometry eningiliziwe, isakhiwo sokusekela, indawo yokuphakelayo kanye nokufakwa.
Izici Zokusebenza Eziyinhloko
- I-bandwidth yokusebenza ebanzi:imodeli eyodwa ingamboza ibhendi ebanzi kune-dipole evamile ye-resonant, okunciphisa isidingo sokushintsha ama-antenna ngesikhathi sokulinganisa imvamisa eshaywe.
- Imisebe eqondisa izinto:umsebe oyinhloko usiza ekuthuthukiseni ukukhetha kwendawo kwemisebenzi yokuqapha, yokulinganisa kanye neyokuthola isiqondiso.
- Ukuziphatha okuzinzile:i-array eklanywe kahle inganikeza ukusebenza okuwusizo kwenzuzo kanye ne-impedance kulo lonke ibhendi layo elicacisiwe, yize yonke ipharamitha kufanele ihlolwe kushidi ledatha ngalinye.
- Ukuhlukaniswa okuqondile noma okuqondile okukabili:ukwakheka kwe-polarization kuncike kumodeli. Imiklamo ehlukaniswe kabili ingasekela ukwakheka kwe-polarization okuqondile okubili okuqondile emhlanganweni owodwa we-antenna.
- Ukushintshaniswa kosayizi nemvamisa:Ukumbozwa kwemvamisa ephansi kudinga izinto ezinde kanye nesakhiwo esikhulu semishini. Ngakho-ke isikhala sokukhweza, ukulayisha komoya kanye nemikhawulo yebanga lokuhlola kubalulekile ngesikhathi sokukhetha.
Izicelo Ezijwayelekile
- Ukuhlolwa kwe-EMI kanye ne-EMC:Ukulinganiswa kokukhishwa kwe-broadband kanye nokuvikelwa komzimba kuzo zonke izigaba zemvamisa ezikhethiwe.
- Ukulinganiswa kwe-antenna:ukuqhathanisa inzuzo, ukulinganisa iphethini yemisebe kanye nomsebenzi wokuhlola ububanzi be-broadband.
- Ukuqapha i-spectrum:ukwamukela amasignali ngamabhendi amaningi emvamisa ngaphandle kokushintsha njalo i-antenna.
- Ukuthola isiqondiso kanye nokuhlola:Impendulo eqondisayo isekela ukuhlaziywa kwesignali uma ihlanganiswe ohlelweni lwe-RF olufanele.
- Ucwaningo lwe-Wireless kanye ne-RF:ukudlulisa noma ukwamukela ngenhloso evamile ezindaweni zokulinganisa zelebhu kanye nensimu.
Indlela Yokukhetha I-Antenna Yesikhathi Selogi
Qala ngokulinganisa okuphelele noma isidingo sesistimu kunokuba ube nobubanzi bemvamisa kuphela. Amaphuzu alandelayo asiza onjiniyela nabathengi ukuqhathanisa amamodeli:
| Isici sokukhetha | Kungani kubalulekile |
|---|---|
| Ibanga lokuvama | Ibhendi edingekayo kumele iwele ngaphakathi kwebanga lokusebenza elibekiwe elinomkhawulo ofanele. |
| Ukwanda kanye nobubanzi be-beammit | Lokhu kuthinta umkhawulo wesixhumanisi, amandla ensimu, ukuxazululwa kwendawo kanye ne-geometry yokuhlola. |
| I-VSWR | Amathonya okufana kwe-Impedance abonise ukungaqiniseki kwamandla kanye nokulinganisa. |
| Ukwehlukaniswa | Khetha ukuhlukaniswa okuqondile noma okuqondile okukabili ngokuya ngomthombo, izinga lokuhlola kanye nohlelo lokulinganisa. |
| Isixhumi namandla | Qinisekisa ukuhambisana nohlelo lwekhebula kanye nezinga lamandla eliqhubekayo noma eliphakeme elidingekayo. |
| Imvilophu yemishini | Buyekeza ubukhulu, ukuhlelwa kokufakelwa kanye nokususwa kokufakwa, ikakhulukazi kumamodeli anemvamisa ephansi. |
Okufanele Ukubuze Umkhiqizi We-Antenna Yezingodo Ezinesikhathi
Uma uqhathanisaumenzi noma umhlinzeki we-antenna ye-log periodic, cela ishidi ledatha lakamuva eliqondene nemodeli bese uqinisekisa ukuthi i-gain ebhalwe ohlwini, i-VSWR, iphethini yemisebe kanye ne-polarization zisebenza kanjani kulo lonke ibhendi. Imidwebo yemishini, ukuqondiswa kwesixhumi kanye nemininingwane yokufaka nakho kubalulekile ngoba i-antenna ye-broadband ingafaneleka ngogesi kodwa ingasebenzi kahle ngomshini ekamelweni elithile, ensikeni noma ekusethweni kwensimu.
I-RF MISO ithuthukisa, ikhiqiza futhi ihlinzeka ngama-antenna e-RF nawe-microwave ukuze ilinganiswe, iqaphe futhi ihlanganiswe nesistimu. Amakhasimende angabuyekeza konkeUbubanzi bomkhiqizo we-antenna ye-RF MISO log periodicbese uqhathanisa ibhendi yokusebenza, i-gain, i-polarization, i-connector kanye nosayizi obonakalayo ngaphambi kokucela ukwesekwa kokukhetha imodeli.
Amamodeli e-RF MISO Log Periodic Antenna akhethiwe
Izibonelo ezilandelayo zibonisa izinketho ezahlukene zebhendi kanye ne-polarization. Imininingwane iqondene nemodeli, ngakho-ke sebenzisa ishidi ledatha elisemthethweni lakamuva njengereferensi yokugcina yobuchwepheshe.
RM-DLPA022-7: Ukumbozwa Okune-Polarized Dual kusukela ku-0.2 kuya ku-2 GHz
I-RM-DLPA022-7 iyi-antenna ye-double-linear polarized log periodic ehlanganisa i-0.2 kuya ku-2 GHz ene-7 dBi typical gain kanye nama-N-Female RF ports. Ama-orthogonal linear polarizations amabili asekela ukusethwa kokulinganisa okudinga ukuhlukahluka kwe-polarization ngaphandle kokufaka esikhundleni se-antenna.
RM-DLPA022-7 | 0.2-2 GHz | Ukuhlukaniswa okuqondile okukabili | Inzuzo ejwayelekile engu-7 dBi
RM-LPA0033-6: Ukusabalala Okubanzi kusukela ku-0.03 kuya ku-3 GHz
I-RM-LPA0033-6 iyi-antenna ye-log eqondile ehlanganisa i-0.03 kuya ku-3 GHz ene-gain ejwayelekile engu-6 dBi kanye nesixhumi se-N-Female. Ukumbozwa kwayo okunemvamisa ephansi kwenza kube yinto efanelekile ekuqapheni i-broadband, umsebenzi we-EMI/EMC kanye nokulinganiswa kwe-antenna lapho kudingeka khona isikhathi eside sokusebenza.
RM-LPA0033-6 | 0.03-3 GHz | Ukuhlukaniswa kwemigqa | Inzuzo ejwayelekile engu-6 dBi
RM-LPA054-7: Ukusebenza kwe-Broadband kusukela ku-0.5 kuya ku-4 GHz
I-RM-LPA054-7 iyi-antenna ye-log eqondile ehlanganisa i-0.5 kuya ku-4 GHz ene-gain ejwayelekile engu-7 dBi kanye nesixhumi se-N-Female. Inikeza inketho yebhendi esebenzayo yokulinganisa i-RF, ukuqapha kanye nezinhlelo zokuthola isiqondiso ezisebenza ngaphezu kwe-500 MHz.
RM-LPA054-7 | 0.5-4 GHz | Ukuhlukaniswa kwemigqa | Inzuzo ejwayelekile engu-7 dBi
Kungani Ama-Antenna E-Source Log Periodic avela ku-RF MISO?
I-RF MISO ingumkhiqizi kanye nomhlinzeki we-antenna ye-RF kanye ne-microwave osekela ukukhethwa kwe-antenna, ukulinganisa kanye nokuhlanganiswa kwesistimu. Uchungechunge lwe-antenna olutholakalayo lwelogi luhlanganisa amamodeli aqondile namabili ahlukaniswe ngomugqa we-polarized wama-band okusebenza akhethiwe. Amakhasi omkhiqizo kanye nama-datasheet asemthethweni ahlinzeka ngolwazi oluqondene nogesi kanye nolwemishini oluqondene nemodeli ukuze kubuyekezwe ubunjiniyela.
Ukuze uthole isincomo esiwusizo, nikeza ububanzi bemvamisa edingekayo, i-polarization, i-gain target, imfuneko ye-VSWR, isixhumi, izinga lamandla, ukuhlelwa kokukhweza kanye nendawo yokusebenza. I-RF MISO ingasiza ekuboneni amamodeli ajwayelekile afanele ukuze kuqhathaniswe.
Hlolauhlu oluphelele lwemikhiqizo ye-antenna ye-log ephindaphindwayo, isibuyekezo se-RF MISOamakhono okuhlola i-antennanomaxhumana nethimba le-RF MISOngezidingo zakho zobuchwepheshe.
imibuzo ejwayelekile ukubuzwa
Uyini umehluko phakathi kwe-antenna ye-log periodic kanye ne-antenna ye-Yagi?
I-antenna ye-Yagi ivame ukulungiswa ukuze isetshenziswe njengebhendi encane futhi isebenzisa isici esisodwa esiqhutshwayo esinabaqondisi be-parasitic kanye ne-reflector. I-log periodic dipole array isebenzisa izinto eziningana ezilinganisiwe, eziqhutshwayo futhi yenzelwe ukusebenza kwe-broadband. Ukukhetha okulungile kuncike ku-bandwidth, inzuzo, usayizi kanye nezidingo zokulinganisa.
Ingabe i-antenna ye-log periodic ingasetshenziswa kokubili ekudluliseni nasekutholeni?
Yebo, uma imodeli ekhethiwe, isixhumi kanye nesilinganiso samandla kuhlangabezana nezidingo zesistimu. Qinisekisa amanani avunyelwe aqhubekayo naphezulu wamandla kushidi ledatha lakamuva ngaphambi kokuthumela.
Ingabe yonke i-antenna ye-log periodic imboza ububanzi bemvamisa efanayo?
Cha. Imodeli ngayinye inebhendi yayo ecacisiwe, inzuzo, i-VSWR, i-polarization kanye nobukhulu bemishini. Uchungechunge lwe-RF MISO lunikeza amamodeli ahlanganisa amabhendi akhethiwe, ngakho onjiniyela kufanele baqhathanise imininingwane ephelele kunokukhetha ngohlobo lwe-antenna kuphela.
Xoxa Ngesidingo Sakho Se-Antenna
Thumela i-RF MISO ibhendi yakho yokusebenza kanye nezidingo zokuhlola noma zesistimu ukuze uthole ukwesekwa kokukhetha imodeli.
I-imeyili: info@rf-miso.com|Ucingo:+86 28 82695327 |www.rf-miso.com
Isikhathi sokuthunyelwe: Disemba-27-2024
