Antenar Vivaldi mai layi mai siffar Polarized 6 dBi Nau'in Gain, 0.2-1.2 GHz Mita Mai Sauri RM-VA0212-6

Vivaldi Entenna: Ka'idar Aiki, Halaye da Aikace-aikace

Eriya ta Vivaldi, wacce aka fi sani da eriya mai kauri, eriya ce ta hanyar sadarwa mai saurin sadarwa wacce ake amfani da ita sosai a tsarin gwaji na RF, microwave, radar, yaƙin lantarki, aunawa, da kuma tsarin gwaji mara waya. Buɗewarta mai kauri tana ba da damar makamashin lantarki ya sauya daga tsarin watsawa mai jagora zuwa sararin samaniya kyauta, wanda ke taimaka wa eriya ta cimma aikin watsawa da kuma hasken hanya.

Idan aka kwatanta da eriya masu resonant da yawa waɗanda aka inganta su a kusa da ƙaramin mitar band, eriya na Vivaldi suna amfani da tsarin tafiya-wave. Wannan yana sa su zama masu jan hankali musamman ga tsarin da ke buƙatar ɗaukar hoto mai faɗi tare da tsarin injina mai sauƙi ko na ƙarfe.

Ta Yaya Antenna Vivaldi Ke Aiki?

Eriya ta asali ta Vivaldi ta ƙunshi gefuna biyu masu sarrafa wutar lantarki waɗanda ke samar da rami mai kauri. Ramin yana faɗaɗa a hankali daga yanki mai kunkuntar ciyarwa zuwa wani babban rami mai haskakawa.

Idan makamashin RF ya shiga eriya, raƙuman lantarki suna tafiya tare da ramin da ke da tauri. Yayin da faɗin ramin ke ƙaruwa, raƙuman da aka jagoranta suna haɗuwa a hankali zuwa sararin samaniya kuma suna haskakawa galibi zuwa ƙarshen buɗewar eriya.

Wannan sauyi a hankali yana ɗaya daga cikin manyan dalilan da yasa Vivaldi eriya ke iya samar da halaye na broadband.

Ƙananan mitar da ake amfani da ita yana da tasiri sosai ta hanyar girman zahiri na buɗewa da kuma raguwar, yayin da aikin mita mafi girma ya dogara ne akan abubuwa kamar canjin ciyarwa, yanayin ƙasa, girman jagora, da daidaiton masana'antu.

Halayen Hasken Radiation

Eriya ta Vivaldi gabaɗaya eriya ce ta ƙarshe, ma'ana cewa babban haskenta yana fuskantar ƙarshen buɗewar buɗewar da aka yi wa kaifi.

Halayen radiation ɗinsa sun dogara ne akan sigogi da yawa na ƙira, gami da:

Faɗin Buɗewa
Tsawon taper da bayanin martaba
Tsarin ciyarwa
Mitar aiki
Tsarin ƙasa da jagora
Girman inji

Yayin da mita ke canzawa, yankin da ke haskakawa tare da tsarin da ke da tauri shima yana canzawa. Wannan yana bawa eriya damar aiki a fadin kewayon mita mai faɗi ba tare da dogaro da ƙaramin sautin sauti ɗaya ba.

An tsara antennas na Vivaldi don layin layi, kodayake aikin polarization ya dogara da takamaiman yanayin lissafi da tsarin ciyarwa.

Babban Nau'in Antennas na Vivaldi

Ana amfani da tsare-tsaren eriya da yawa na Vivaldi a cikin injiniyan RF.

Eriya ta Vivaldi ta Gargajiya
Yana amfani da rami mai kauri da aka kafa tsakanin yankuna biyu masu amfani da wutar lantarki kuma yana ɗaya daga cikin ayyukan da aka fi aiwatarwa.

Antenan Antipodal Vivaldi
Yana amfani da abubuwan da ke sarrafa wutar lantarki a ɓangarorin da ke tsakanin wani abu mai kama da dielectric substrate. Wannan tsari na iya samar da sauƙin sauyawa daga wasu hanyoyin watsawa zuwa ga buɗewar radiating.

Antenna Mai Daidaitacce na Antipodal Vivaldi
Yana amfani da tsarin layuka da yawa masu daidaitawa don inganta daidaiton filin da halayen polarization a wasu aikace-aikacen broadband.

Ana iya zaɓar tsare-tsare daban-daban dangane da bandwidth, polarization, hanyar ciyarwa, tsarin ƙira, da buƙatun haɗakar tsarin.

Maɓallan Maɓalli Lokacin Zaɓar Antenna na Vivaldi

Lokacin zabar eriya ta Vivaldi, kewayon mita shine kawai wurin farawa.

Gain yana nuna yadda eriya ke tattara hasken rana yadda ya kamata a gaban alkibla.

VSWR yana nuna daidaiton impedance tsakanin eriya da tsarin RF. Ƙananan VSWR gabaɗaya yana nufin ƙarancin ƙarfin da aka nuna.

Ya kamata Polarization ya dace da tsarin RF da aka yi niyya don rage rashin daidaiton polarization.

3 dB Beamwidth yana bayyana faɗin kusurwa na babban hasken radiation kuma yana da mahimmanci a cikin aikace-aikacen auna radar, sa ido, da kuma auna alkibla.

Tsarin polarization na giciye yana da mahimmanci idan tsarkin polarization yana da mahimmanci.

Ya kamata a yi la'akari da abubuwan da suka shafi injina kamar nau'in mahaɗi, girman eriya, nauyi, tsarin hawa, da sarrafa wutar lantarki yayin haɗa tsarin.

Misali, Antenna Vivaldi na RF MISO mai suna RM-VA0212-6 Linear Polarized Vivaldi Antenna yana aiki daga 0.2 zuwa 1.2 GHz, yana samar da riba ta dBi 6, yana amfani da layin polarization da kuma hanyar sadarwa ta N-Female, kuma an ƙayyade shi don radar, sadarwa ta tauraron dan adam, yaƙin lantarki, da aikace-aikacen gwaji mara waya masu inganci.

Fa'idodin Antennas na Vivaldi

Antennas na Vivaldi suna ba da fa'idodi da yawa masu amfani:

Faɗin bandwidth mai aiki sosai
Hasken wuta na ƙarshe na alkibla
Tsarin hasken haske mai sauƙi
Kyakkyawan jituwa tare da tsarin RF mai sauri
Tsarin da za a iya canzawa a cikin kewayon mita daban-daban
Ya dace da tsarin abubuwa guda ɗaya da kuma jeri

Sifofinsu na intanet (broadband) suna sa su zama masu amfani musamman lokacin da tsarin ke buƙatar rufe mitoci da yawa ba tare da sauya eriya akai-akai ba.

Aikace-aikace

Ana amfani da antennas na Vivaldi a cikin waɗannan ƙa'idodi:

Tsarin radar
Yaƙin lantarki
Ma'aunin RF na Broadband
Gwajin mara waya
Nemo hanya
Kula da sigina
Hoton Microwave
Tsarin sadarwa
Jerin eriya
Bincike da aikace-aikacen dakin gwaje-gwaje

A cikin tsarin tsararru, ana iya shirya abubuwa da yawa na Vivaldi don samun riba mafi girma, ƙananan bishiyoyi, ko ikon sarrafa hasken lantarki.

Kammalawa

Eriya ta Vivaldi ta haɗa tsarin tafiya-rami mai kauri, aikin broadband, da kuma hasken hanya, wanda hakan ya sa ta zama tsarin eriya mai amfani ga tsarin RF da microwave na zamani.

Aikinsa na ainihi ya dogara ne da yanayin taper, girman budewa, ƙirar ciyarwa, mitar aiki, da aiwatar da injina. Saboda haka, injiniyoyi ya kamata su kimanta ba kawai bandwidth da riba ba, har ma da VSWR, polarization, beamwidth, cross-polarization performance, RF interface, da buƙatun shigarwa lokacin zaɓar samfurin da ya dace.

Don aikace-aikacen radar, yaƙin lantarki, aunawa da amfani da intanet, sadarwa, da gwajin mara waya, eriya na Vivaldi suna ba da mafita mai sassauƙa inda ɗaukar hoto mai faɗi da aikin RF na alkibla duk suna da mahimmanci.