Impendulo ekhawulezileyo:I-antenna ye-log periodic yi-antenna ebhekisa kwicala le-broadband eyakhiwe ngokulandelelana kwezinto ezisebenzisa imitha ezilinganisiweyo. Amaqela ahlukeneyo ezinto asebenza ngombane kwiifrequensi ezahlukeneyo, evumela i-antenna enye ukuba igcine i-impedance eluncedo kunye neempawu zemitha kwibhendi ebanzi yokusebenza. Ii-antenna ze-log periodic zisetyenziswa kakhulu kuvavanyo lwe-EMI/EMC, ukujonga i-spectrum, ukulinganisa i-antenna, ukufumana indlela kunye neenkqubo ze-RF ze-broadband.
Yintoni i-Antenna ye-Log Periodic?
A i-antenna yexesha lelog, edla ngokufinyezwa njenge-LPA, lusapho lwe-antenna oluzimeleyo kwi-frequency olune-geometry etshintshayo kwipatheni ye-logarithmic ephindaphindayo. Uhlobo oluqhelekileyo yi-log periodic dipole array (LPDA), esebenzisa izinto ze-dipole zobude kunye nezithuba ezahlukeneyo ngokuqhubekayo kwi-boom exhasayo.
Ngokungafaniyo ne-antenna ye-narrowband eyilwe malunga nobude obunye be-resonant obuphambili, i-LPDA isebenzisa izinto ezininzi ezilinganisiweyo ukugubungela iibhendi ze-frequency ezikhethiweyo. Kuyo nayiphi na i-frequency yokusebenza, liqela lezinto ezikufutshane ne-resonance kuphela elinegalelo elikhulu kwi-radiation. Le ndawo ibizwa ngokuba yi-indawo esebenzayoNjengoko i-frequency itshintsha, indawo esebenzayo ihamba ngokwe-array.
Isebenza njani i-Antenna ye-Log Periodic?
Ubukhulu bezinto ezikufutshane bunxulumene ne-scale factor, edla ngokumelwa ngunobumba wesiGrike u-tau. Ubude bezinto, isithuba kunye nezinye izilinganiso zilandela olu lwalamano lulinganayo. Ngenxa yokuba isakhiwo siphinda ngombane xa i-frequency itshintsha ngomlinganiselo ofanayo, i-input impedance kunye nokuziphatha kwe-radiation kunokuhlala kuzinzile kwi-wide band.
Izinto ezinde kakhulu zixhasa inxalenye ye-frequency esezantsi yoluhlu lokusebenza, ngelixa izinto ezimfutshane zixhasa inxalenye ye-frequency ephezulu. Amandla adluliselwa ngolungiselelo lokutya olulinganiselayo, kwaye ubudlelwane besigaba phakathi kwezinto ezikufutshane buvelisa umqadi obhekisa kwicala. Ukwanda kokwenyani, ububanzi be-beam, umlinganiselo wangaphambili ukuya ngasemva kunye nomdlalo we-impedance kuxhomekeke kwi-geometry eneenkcukacha, isakhiwo senkxaso, indawo yokutyisa kunye nokufakelwa.
Iimpawu eziphambili zokusebenza
- I-bandwidth yokusebenza ebanzi:Imodeli enye inokugubungela ibhendi ebanzi kune-dipole eqhelekileyo ye-resonant, nto leyo enciphisa isidingo sokutshintsha ii-antenna ngexesha lokulinganisa i-sweep-frequency.
- Imitha yelanga:umqadi oyintloko unceda ekuphuculeni ukukhetha indawo kwimisebenzi yokubeka esweni, ukulinganisa kunye nokukhangela indlela.
- Ukuziphatha okuzinzileyo:uluhlu oluyilwe kakuhle lunokubonelela ngenzuzo eluncedo kunye nokusebenza kwe-impedance kuyo yonke ibhendi yalo echaziweyo, nangona yonke iparameter kufuneka ihlolwe kwiphepha ledatha ngalinye.
- Ukuphola okuthe tyaba okanye okuthe tyaba:i-polarization ixhomekeke kwimodeli. Uyilo olune-double-polarized lunokuxhasa i-orthogonal linear polarizations ezimbini kwi-antenna assembly enye.
- Utshintshiselwano phakathi kobungakanani nobukhulu:Ukugubungela okungaphantsi kwesantya kufuna izinto ezinde kunye nesakhiwo esikhulu soomatshini. Indawo yokufakela, umthwalo womoya kunye nemida yokuvavanya ibalulekile ngexesha lokukhetha.
Izicelo eziqhelekileyo
- Uvavanyo lwe-EMI kunye ne-EMC:umlinganiselo wokukhutshwa kwe-broadband radiated-emission kunye nokukhuselwa komzimba kuzo zonke ii-frequency ranges ezikhethiweyo.
- Umlinganiselo we-antenna:uthelekiso lwenzuzo, umlinganiselo wepatheni yemitha kunye nomsebenzi wovavanyo lwe-broadband.
- Ukubeka iliso kwi-spectrum:ukufumana imiqondiso kwiibhendi ezininzi zefrikhwensi ngaphandle kokutshintshwa rhoqo kwe-antenna.
- Ukufunyanwa kwesikhokelo kunye nokuhlola:Impendulo ebhekisa kwicala ixhasa uhlalutyo oluthwala isignali xa idityaniswe kwinkqubo ye-RF efanelekileyo.
- Uphando olungenazingcingo kunye ne-RF:ukudlulisa okanye ukufumana ngokwenjongo ngokubanzi kwiziseko zelebhu kunye nokulinganisa intsimi.
Indlela yokukhetha i-Antenna ye-Log Periodic
Qala ngomlinganiselo opheleleyo okanye imfuneko yenkqubo endaweni yoluhlu lweefrikhwensi kuphela. La manqaku alandelayo anceda iinjineli kunye nabathengi ukuthelekisa iimodeli:
| Into yokukhetha | Kutheni kubalulekile |
|---|---|
| Uluhlu lwefrikhwensi | Ibhendi efunekayo mayibe ngaphakathi koluhlu oluchaziweyo lokusebenza kunye nomda ofanelekileyo. |
| Ukwanda kunye nobubanzi bemitha | Ezi zichaphazela umda wekhonkco, amandla entsimi, isisombululo sendawo kunye nejometri yovavanyo. |
| I-VSWR | Iimpembelelo zomdlalo we-Impedance zibonakalise ukungaqiniseki kwamandla kunye nomlinganiselo. |
| Ukwahlulahlula | Khetha i-polarization ethe tye okanye ethe tye ngokwemvelaphi, umgangatho wovavanyo kunye nesicwangciso sokulinganisa. |
| Isinxibelelanisi kunye namandla | Qinisekisa ukuba iyahambelana nenkqubo yekhebula kunye nenqanaba lamandla elifunekayo eliqhubekayo okanye eliphezulu. |
| Imvulophu yoomatshini | Hlola ubungakanani, ulungiselelo lokufakelwa kunye nokususwa kofakelo, ingakumbi kwiimodeli ezisebenzisa isantya esiphantsi. |
Yintoni Onokuyibuza Umenzi we-Antenna ye-Log Periodic
Xa uthelekisaumenzi okanye umthengisi we-antenna yexesha le-log, cela iphepha ledatha lamva nje elichaza imodeli ethile kwaye uqinisekise indlela i-gain edwelisiweyo, i-VSWR, ipatheni yemitha kunye ne-polarization esebenza ngayo kulo lonke ibhendi. Imizobo yoomatshini, ukujongwa kwesixhumi kunye neenkcukacha zokufakelwa nazo zibalulekile kuba i-antenna ye-broadband inokufaneleka ngombane kodwa ingasebenzi ngoomatshini kwi-chamber ethile, i-mast okanye ukuseta intsimi.
I-RF MISO iphuhlisa, ivelisa kwaye ibonelela ngee-antenna ze-RF kunye ne-microwave zokulinganisa, ukujonga kunye nokudibanisa inkqubo. Abathengi banokuphonononga yonke intoUluhlu lwemveliso ye-antenna yexesha le-RF MISO logkwaye uthelekise ibhendi yokusebenza, i-gain, i-polarization, i-connector kunye nobukhulu obubonakalayo ngaphambi kokuba ucele inkxaso yokukhetha imodeli.
Iimodeli ze-RF MISO Log Periodic Antenna ezikhethiweyo
Le mizekelo ilandelayo ibonisa ukhetho olwahlukileyo lwebhendi kunye nolwe-polarisation. Iinkcukacha zihambelana nemodeli ethile, ngoko sebenzisa iphepha ledatha elisemthethweni lamva nje njengesalathiso sokugqibela sobugcisa.
RM-DLPA022-7: Ugutyungelwe yi-Dual-Polarized ukusuka kwi-0.2 ukuya kwi-2 GHz
I-RM-DLPA022-7 yi-antenna ephindwe kabini ene-polarized log egubungela i-0.2 ukuya kwi-2 GHz ene-7 dBi typical gain kunye ne-N-Female RF ports. Ii-orthogonal linear polarizations ezimbini zixhasa ukuseta umlinganiselo ofuna ukwahluka kwe-polarization ngaphandle kokutshintsha i-antenna.
RM-DLPA022-7 | 0.2-2 GHz | Ukuphola okubini ngomgca ophindwe kabini | 7 dBi inzuzo eqhelekileyo
RM-LPA0033-6: Ububanzi obupheleleyo ukusuka kwi-0.03 ukuya kwi-3 GHz
I-RM-LPA0033-6 yi-antenna ejikelezayo yelog ethe tyaba egubungela i-0.03 ukuya kwi-3 GHz ene-6 dBi typical gain kunye ne-N-Female connector. Ukugubungela kwayo okuphantsi kwenza ukuba ifaneleke ekubekweni kweliso kwi-broadband, umsebenzi we-EMI/EMC kunye nokulinganiswa kwe-antenna apho kufuneka khona ixesha elide lokusebenza.
RM-LPA0033-6 | 0.03-3 GHz | Ukwahlulahlula okucwangcisiweyo | 6 dBi inzuzo eqhelekileyo
RM-LPA054-7: Ukusebenza kweBroadband ukusuka kwi-0.5 ukuya kwi-4 GHz
I-RM-LPA054-7 yi-antenna ye-log ejikelezayo ene-linear-polarized egubungela i-0.5 ukuya kwi-4 GHz ene-7 dBi typical gain kunye ne-N-Female connector. Ibonelela ngokhetho olusebenzayo lwebhendi yokulinganisa i-RF, ukujonga kunye neenkqubo zokufumana ulwalathiso ezisebenza ngaphezulu kwe-500 MHz.
RM-LPA054-7 | 0.5-4 GHz | Ukwahlulahlula okucwangcisiweyo | 7 dBi inzuzo eqhelekileyo
Kutheni ii-Antennas ze-Source Log Periodic ezivela kwi-RF MISO?
I-RF MISO ngumvelisi kunye nomthengisi we-antenna ye-RF kunye ne-microwave exhasa ukukhethwa kwe-antenna, ukulinganisa kunye nokuhlanganiswa kwenkqubo. Uthotho lwe-antenna olufumanekayo luquka iimodeli ezi-linear kunye nezi-dual-linear polarized zeebhendi zokusebenza ezikhethiweyo. Amaphepha emveliso kunye namaphepha edatha asemthethweni abonelela ngolwazi oluthile lombane kunye noomatshini oluhambelana nemodeli ukuze kuhlolwe ubunjineli.
Ukuze ufumane ingcebiso eluncedo, bonelela ngoluhlu lweefrikhwensi ezifunekayo, i-polarization, i-gain target, imfuneko ye-VSWR, isixhumi, inqanaba lamandla, ulungiselelo lokufakela kunye nendawo yokusebenza. I-RF MISO inokunceda ekuchongeni iimodeli ezifanelekileyo zokuthelekiswa.
Hlolauluhlu olupheleleyo lwemveliso ye-antenna yexesha elithile, uphononongo lweRF MISOubuchule bokuvavanya i-antennaokanyeNxibelelana neqela le-RF MISOngokweemfuno zakho zobugcisa.
Imibuzo ebuzwa qho
Yintoni umahluko phakathi kwe-antenna ye-log periodic kunye ne-antenna ye-Yagi?
I-antenna yeYagi idla ngokulungiswa ukuze ilungele ibhendi encinci kwaye isebenzisa into enye eqhutywayo kunye nabalawuli be-parasitic kunye ne-reflector. I-log periodic dipole array isebenzisa izinto ezininzi ezilinganisiweyo, eziqhutywayo kwaye yenzelwe ukusebenza kwe-broadband. Ukhetho oluchanekileyo luxhomekeke kwiimfuno ze-bandwidth, inzuzo, ubungakanani kunye nomlinganiselo.
Ngaba i-antenna ye-log periodic ingasetyenziselwa ukudlulisa kunye nokwamkela?
Ewe, xa imodeli ekhethiweyo, isixhumi kunye nomlinganiselo wamandla zihlangabezana neemfuno zenkqubo. Qinisekisa amaxabiso avumelekileyo aqhubekayo kunye namaxabiso aphezulu kuluhlu lwamva nje lwedatha ngaphambi kokuba uthumele.
Ngaba yonke i-antenna ye-log periodic igubungela uluhlu olufanayo lweefrikhwensi?
Hayi. Imodeli nganye inebhendi yayo echaziweyo, i-gain, i-VSWR, i-polarization kunye nobukhulu boomatshini. Uthotho lwe-RF MISO lubonelela ngeemodeli ezigubungela iibhendi ezikhethiweyo, ngoko ke iinjineli kufuneka zithelekise iinkcukacha ezipheleleyo endaweni yokukhetha uhlobo lwe-antenna kuphela.
Xoxa ngeMfuneko yakho ye-Antenna
Thumela i-RF MISO ibhendi yakho yokusebenza kunye neemfuno zovavanyo okanye zenkqubo ukuze ufumane inkxaso yokukhetha imodeli.
I-imeyile: info@rf-miso.com|Ifowuni:+86 28 82695327 |www.rf-miso.com
Ixesha leposi: Disemba-27-2024
