Antena ya Linear Polarized Vivaldi 6 dBi Type. Gain, 0.2-1.2 GHz Frequency Range RM-VA0212-6

Antena ya Vivaldi: Mfundo Yogwirira Ntchito, Makhalidwe ndi Ntchito

Antena ya Vivaldi, yomwe imadziwikanso kuti antenna yotchinga, ndi antena yolunjika ya broadband yomwe imagwiritsidwa ntchito kwambiri mu RF, microwave, radar, electronic warfare, measurement, ndi ma waya oyesera. Kutseguka kwake kosiyana komwe kumachepa kumalola mphamvu yamagetsi kusintha pang'onopang'ono kuchokera ku kapangidwe ka transmission kotsogozedwa kupita ku malo omasuka, zomwe zimathandiza antena kukwaniritsa ntchito ya broadband ndi kuwala kolunjika.

Poyerekeza ndi ma antenna ambiri ozungulira omwe amakonzedwa bwino mozungulira gulu laling'ono la ma frequency, ma antenna a Vivaldi amagwiritsa ntchito kapangidwe ka mafunde oyendayenda. Izi zimapangitsa kuti azikopa kwambiri makina omwe amafunika kufalikira kwa ma frequency ambiri pamodzi ndi mawonekedwe osavuta a planar kapena metallic mechanical.

Kodi Antena ya Vivaldi Imagwira Ntchito Bwanji?

Antena yoyambira ya Vivaldi imakhala ndi mbali ziwiri zoyendetsera mpweya zomwe zimapangitsa kuti pakhale malo ocheperako. Malowo amakula pang'onopang'ono kuchokera kudera lopapatiza loperekera mpweya kupita ku malo otseguka kwambiri.

Mphamvu ya RF ikalowa mu antenna, mafunde a electromagnetic amayenda motsatira malo ocheperako. Pamene malo ocheperako akuwonjezeka, mafunde otsogozedwa pang'onopang'ono amalumikizana m'malo omasuka ndipo amafalikira makamaka kumapeto kwa antenna.

Kusintha pang'onopang'ono kumeneku ndi chimodzi mwa zifukwa zazikulu zomwe ma antenna a Vivaldi amatha kupereka mawonekedwe a broadband.

Kuchuluka kwa ma frequency otsika omwe amagwiritsidwa ntchito kumakhudzidwa kwambiri ndi kukula kwa malo otseguka ndi otsetsereka, pomwe magwiridwe antchito apamwamba amadalira kwambiri zinthu monga kusintha kwa chakudya, mawonekedwe a taper, kukula kwa kondakitala, ndi kulondola kwa kupanga.

Makhalidwe a Ma radiation

Antena ya Vivaldi nthawi zambiri imakhala antenna yomaliza, zomwe zikutanthauza kuti kuwala kwake kwakukulu kumalunjika kumapeto kwa chotsegulira chocheperako.

Makhalidwe ake a kuwala kwa dzuwa amadalira magawo angapo a kapangidwe kake, kuphatikizapo:

M'lifupi mwa kabowo
Kutalika kwa teper ndi mbiri
Kapangidwe ka chakudya
Mafupipafupi ogwirira ntchito
Maonekedwe a nthaka ndi kondakitala
Miyeso ya makina

Pamene ma frequency akusintha, dera lowala bwino lomwe lili m'kati mwa kapangidwe kocheperako limasinthanso. Izi zimathandiza kuti antenna igwire ntchito pa ma frequency ambiri popanda kudalira kumveka pang'ono.

Ma antenna a Vivaldi nthawi zambiri amapangidwa kuti azigwiritsidwa ntchito polarization yolunjika, ngakhale kuti magwiridwe antchito a polarization amadalira mawonekedwe ake ndi kapangidwe kake ka chakudya.

Mitundu Yaikulu ya Vivaldi Antennas

Ma antenna angapo a Vivaldi amagwiritsidwa ntchito kwambiri mu RF engineering.

Antena ya Vivaldi Yachizolowezi
Imagwiritsa ntchito malo ocheperako opangidwa pakati pa madera awiri oyendetsera magetsi ndipo ndi imodzi mwa njira zodziwika bwino zogwiritsira ntchito.

Antena ya Antipodal Vivaldi
Imagwiritsa ntchito zinthu zoyendetsera magetsi mbali zosiyana za gawo la dielectric. Kapangidwe kameneka kangapereke kusintha kosavuta kuchokera ku ma feed ena a ma transmission-line kupita ku malo otseguka.

Antena Yoyenera ya Antipodal Vivaldi
Imagwiritsa ntchito kapangidwe ka multilayer kofanana kwambiri kuti ikonze bwino field balance ndi polarization mu ma application ena a broadband.

Makonzedwe osiyanasiyana angasankhidwe malinga ndi bandwidth, polarization, njira yodyetsera, njira yopangira, ndi zofunikira zogwirizanitsa makina.

Ma Parameter Ofunika Posankha Antena ya Vivaldi

Posankha antenna ya Vivaldi, kuchuluka kwa ma frequency ndi komwe kumayambira.

Kupeza bwino kumasonyeza momwe antenna imalimbikitsira bwino kuwala kutsogolo.

VSWR imawonetsa kufanana kwa impedance pakati pa antenna ndi RF system. VSWR yotsika nthawi zambiri imatanthauza mphamvu yochepa yowunikira.

Polarization iyenera kufanana ndi dongosolo la RF lomwe likufunidwa kuti lichepetse kusagwirizana kwa polarization.

3 dB Beamwidth imafotokoza m'lifupi mwa ngodya ya radiation yayikulu ndipo ndi yofunika kwambiri pa radar, monitoring, ndi directional muyeso.

Kugwira ntchito kwa Cross-Polarization ndikofunikiranso pamene kuyera kwa polarization kuli kofunikira.

Zinthu zamakina monga mtundu wa cholumikizira, kukula kwa antenna, kulemera, kapangidwe kake, ndi momwe amagwirira ntchito ziyeneranso kuganiziridwa panthawi yogwirizanitsa makina.

Mwachitsanzo, RF MISO's RM-VA0212-6 Linear Polarized Vivaldi Antenna imagwira ntchito kuyambira 0.2 mpaka 1.2 GHz, imapereka 6 dBi frequency gain, imagwiritsa ntchito linear polarization ndi N-Female interface, ndipo imayikidwa pa radar, satellite communications, electronic warfare, ndi high-end wireless test applications.

Ubwino wa Vivaldi Antennas

Ma antenna a Vivaldi amapereka zabwino zingapo zothandiza:

Bandwidth yogwira ntchito kwambiri
Kuwala kwa moto kochokera mbali imodzi
Kapangidwe kosavuta kowala
Kugwirizana bwino ndi machitidwe a RF a broadband
Kapangidwe kokulirapo pamitundu yosiyanasiyana ya ma frequency
Yoyenera kukonza zinthu ziwiri kapena zingapo

Makhalidwe awo a broadband amawapangitsa kukhala othandiza kwambiri pamene makina amafunika kuphimba ma frequency angapo popanda kusintha ma antenna pafupipafupi.

Mapulogalamu

Ma antenna a Vivaldi amagwiritsidwa ntchito kwambiri mu:

Machitidwe a radar
Nkhondo zamagetsi
Muyeso wa RF wa Broadband
Kuyesa opanda zingwe
Kupeza njira
Kuwunika zizindikiro
Kujambula kwa maikulowevu
Machitidwe olumikizirana
Ma antenna a gulu
Kafukufuku ndi ntchito za labotale

Mu machitidwe a array, zinthu zingapo za Vivaldi zitha kukonzedwanso kuti zipeze phindu lalikulu, matabwa opapatiza, kapena mphamvu yowongolera matabwa amagetsi.

Mapeto

Antena ya Vivaldi imaphatikiza kapangidwe ka mafunde oyenda omwe ali ndi malo ocheperako, ntchito ya broadband, ndi kuwala kwa mbali, zomwe zimapangitsa kuti ikhale yosiyana kwambiri ndi kapangidwe ka antena kamakono ka RF ndi ma microwave.

Kugwira ntchito kwake kwenikweni kumadalira mawonekedwe a taper, kukula kwa aperture, kapangidwe ka chakudya, kuchuluka kwa ntchito, ndi kukhazikitsa kwa makina. Chifukwa chake, mainjiniya ayenera kuwunika osati bandwidth ndi gain yokha, komanso VSWR, polarization, beamwidth, cross-polarization performance, RF interface, ndi zofunikira pakuyika posankha mtundu woyenera.

Pa radar, electronic warfare, broadband muyeso, kulankhulana, ndi kuyesa opanda zingwe, ma antenna a Vivaldi amapereka njira yosinthika komwe kufalikira kwa ma frequency ambiri ndi magwiridwe antchito a RF ndikofunikira.