Yankho lachangu:Antena yozungulira ya log ndi antena yolunjika ya broadband yomangidwa kuchokera ku zinthu zozungulira zozungulira. Magulu osiyanasiyana a zinthu amayamba kugwira ntchito zamagetsi pamafupipafupi osiyanasiyana, zomwe zimapangitsa kuti antena imodzi ikhalebe ndi mphamvu yothandiza komanso mawonekedwe a radiation pagulu lonse logwira ntchito. Antena yozungulira ya log imagwiritsidwa ntchito kwambiri poyesa EMI/EMC, kuyang'anira ma spectrum, kuyeza antena, kupeza njira ndi machitidwe a broadband RF.
Kodi Antenna ya Log Periodic ndi Chiyani?
A antenna yozungulira ya log, yomwe nthawi zambiri imafupikitsidwa kuti LPA, ndi banja la ma antenna omwe sagwiritsa ntchito ma frequency omwe geometry yawo imasintha mu logarithmic pattern yobwerezabwereza. Fomu yodziwika kwambiri ndi log periodic dipole array (LPDA), yomwe imagwiritsa ntchito zinthu za dipole za kutalika ndi malo osiyanasiyana pang'onopang'ono motsatira boom yothandizira.
Mosiyana ndi antenna ya narrowband yopangidwa mozungulira kutalika kwa resonant imodzi, LPDA imagwiritsa ntchito zinthu zingapo zoyezera kuti ziphimbe ma frequency band osankhidwa. Pafupipafupi iliyonse yogwira ntchito, gulu la zinthu zomwe zili pafupi ndi resonance zokha ndi lomwe limathandizira kwambiri pa radiation. Dera ili limatchedwadera logwira ntchitoPamene ma frequency akusintha, dera logwira ntchito limasuntha motsatira gulu.
Kodi Antena Yozungulira ya Log Imagwira Ntchito Bwanji?
Miyeso ya zinthu zapafupi imagwirizana ndi sikelo, yomwe nthawi zambiri imaimiridwa ndi chilembo chachi Greek tau. Kutalika kwa zinthu, malo ndi miyeso ina kumatsatira ubale wofananawu. Chifukwa kapangidwe kake kamabwerezabwereza zamagetsi pamene ma frequency amasintha ndi chiŵerengero chomwecho, kulowerera kwa impedance ndi khalidwe la ma radiation zimatha kukhalabe zokhazikika pa gulu lalikulu.
Zinthu zazitali kwambiri zimathandizira gawo lotsika la ma frequency ogwiritsira ntchito, pomwe zinthu zazifupi kwambiri zimathandizira gawo lotsika kwambiri. Mphamvu imasamutsidwa kudzera mu dongosolo loyenera la chakudya, ndipo ubale wa gawo pakati pa zinthu zoyandikana umapanga kuwala kolunjika. Kupeza kwenikweni, m'lifupi mwa beam, chiŵerengero cha kutsogolo ndi kumbuyo ndi machesi a impedance zimadalira mawonekedwe atsatanetsatane, kapangidwe kothandizira, malo odyetsera ndi malo oyika.
Makhalidwe Ofunika Kwambiri
- Bandwidth yogwira ntchito:Chitsanzo chimodzi chimatha kuphimba gulu lalikulu kuposa dipole yachizolowezi yolumikizana, zomwe zimachepetsa kufunika kosintha ma antenna panthawi yoyezera pafupipafupi.
- Kuwala kwa mbali:Mzere waukulu umathandiza kukonza kusankha malo pa ntchito zowunikira, kuyeza ndi kupeza njira.
- Khalidwe lokhazikika:Gulu lopangidwa bwino lingapereke phindu lothandiza komanso magwiridwe antchito a impedance kudutsa gulu lake losankhidwa, ngakhale kuti gawo lililonse liyenera kuwonedwa pa pepala la data.
- Kugawanika kwa mzere kapena mzere wawiri:Kugawa kwa ma antenna kumadalira chitsanzo. Mapangidwe okhala ndi ma polarized awiri amatha kuthandizira ma polarized awiri olunjika mu msonkhano umodzi wa antenna.
- Kusinthana kwa kukula kwa nthawi:Kuphimba kwa ma frequency otsika kumafuna zinthu zazitali komanso kapangidwe ka makina akuluakulu. Malo okwerera, kunyamula mphepo ndi zoletsa za mtunda woyesera ndizofunikira pakusankha.
Mapulogalamu Odziwika
- Kuyesa kwa EMI ndi EMC:Kuyeza kwa utsi wa broadband radiated-emission ndi chitetezo chamthupi m'magawo osiyanasiyana a ma frequency.
- Muyeso wa antenna:kuyerekeza kwa phindu, muyeso wa radiation-pattern ndi ntchito ya mayeso a broadband.
- Kuwunika kwa sipekitiramu:kulandira zizindikiro kudzera m'mabande ambiri a ma frequency popanda kusintha antenna pafupipafupi.
- Kupeza njira ndi kufufuza:Kuyankha kolunjika kumathandiza kusanthula kokhala ndi chizindikiro pamene chikuphatikizidwa mu dongosolo loyenera la RF.
- Kafukufuku wa opanda zingwe ndi RF:kutumiza kapena kulandira zinthu m'malo oyezera zinthu m'ma laboratories ndi m'munda.
Momwe Mungasankhire Antena Yopangira Log
Yambani ndi muyeso wonse kapena zofunikira pa dongosolo osati kuchuluka kwa ma frequency okha. Mfundo zotsatirazi zimathandiza mainjiniya ndi ogula kuyerekeza mitundu:
| Chinthu chosankha | Chifukwa chake ndikofunikira |
|---|---|
| Mafupipafupi osiyanasiyana | Mzere wofunikira uyenera kukhala mkati mwa gawo lofunikira logwirira ntchito ndi malire oyenera. |
| Kupeza ndi kupingasa kwa beam | Izi zimakhudza malire a ulalo, mphamvu ya munda, kutsimikiza kwa malo ndi mawonekedwe a mayeso. |
| VSWR | Mphamvu zofananira ndi Impedance zikuwonetsa kusatsimikizika kwa mphamvu ndi muyeso. |
| Kugawanika | Sankhani polarization yolunjika kapena iwiri-yolunjika malinga ndi gwero, muyezo woyesera ndi dongosolo loyezera. |
| Cholumikizira ndi mphamvu | Tsimikizirani kuti zikugwirizana ndi makina a chingwe komanso mphamvu yofunikira yopitilira kapena yapamwamba. |
| Envelopu yamakina | Unikani kukula kwake, makonzedwe oikira ndi chilolezo choyikira, makamaka pa mitundu yotsika. |
Zimene Mungafunse Wopanga Antena ya Log Periodic
Poyerekezawopanga kapena wogulitsa antenna ya nthawi ndi nthawi ya log, funsani pepala la data laposachedwa la chitsanzo ndikutsimikizira momwe gain, VSWR, radiation pattern ndi polarization zomwe zalembedwazi zimagwirira ntchito pa gulu lonse. Zojambula zamakina, mawonekedwe a cholumikizira ndi tsatanetsatane woyikira ndizofunikiranso chifukwa antenna ya broadband ikhoza kukhala yoyenera zamagetsi koma yosagwira ntchito pamakina pa chipinda china, mast kapena field setting.
RF MISO imapanga, imapanga ndikupereka ma antenna a RF ndi microwave kuti ayesere, kuyang'anira komanso kuphatikiza makina. Makasitomala amatha kuwonanso zonseRF MISO log periodic antenna product rangendipo yerekezerani gulu logwirira ntchito, phindu, polarization, cholumikizira ndi kukula kwenikweni musanapemphe thandizo losankha chitsanzo.
Ma Modeli Osankhidwa a RF MISO Log Periodic Antenna
Zitsanzo zotsatirazi zikuwonetsa zosankha zosiyanasiyana za gulu ndi polarization. Mafotokozedwe ake ndi a mtundu wokha, choncho gwiritsani ntchito deta yaposachedwa ngati njira yomaliza yogwiritsira ntchito ukadaulo.
RM-DLPA022-7: Kuphimba kwa Ma Polarized Awiri kuyambira 0.2 mpaka 2 GHz
RM-DLPA022-7 ndi antenna yozungulira yokhala ndi mizere iwiri yokhala ndi ma point awiri, yomwe imaphimba ma 0.2 mpaka 2 GHz yokhala ndi ma 7 dBi typical gain ndi ma N-Female RF ports. Ma point awiri a orthogonal linear polarizations amathandizira ma seti a muyeso omwe amafunikira kusiyanasiyana kwa polarization popanda kusintha antenna.
RM-DLPA022-7 | 0.2-2 GHz | Kugawanika kwa mizere iwiri | 7 dBi wamba
RM-LPA0033-6: Kufalikira Kwambiri kuyambira 0.03 mpaka 3 GHz
RM-LPA0033-6 ndi antenna yozungulira ya log yomwe imaphimba 0.03 mpaka 3 GHz yokhala ndi 6 dBi typical gain ndi cholumikizira cha N-Female. Kuphimba kwake kwa ma frequency ochepa kumapangitsa kuti ikhale yofunikira pakuwunika kwa broadband, ntchito ya EMI/EMC komanso muyeso wa antenna komwe kumafunika nthawi yayitali yogwirira ntchito.
RM-LPA0033-6 | 0.03-3 GHz | Kugawa kwa mzere | 6 dBi wamba
RM-LPA054-7: Kugwira ntchito kwa Broadband kuyambira 0.5 mpaka 4 GHz
RM-LPA054-7 ndi antenna yozungulira ya log yomwe imaphimba 0.5 mpaka 4 GHz yokhala ndi 7 dBi typical gain ndi cholumikizira cha N-Female. Imapereka njira yothandiza yoyezera RF, kuyang'anira, ndi kupeza njira zomwe zikugwira ntchito pa liwiro la 500 MHz.
RM-LPA054-7 | 0.5-4 GHz | Kugawa kwa mzere | 7 dBi wamba
Chifukwa chiyani ma Source Log Periodic Antennas ochokera ku RF MISO?
RF MISO ndi wopanga ma antenna a RF ndi ma microwave komanso wogulitsa wothandizira kusankha ma antenna, kuyeza, ndi kuphatikiza makina. Mndandanda wa ma antenna ozungulira omwe alipo umaphatikizapo mitundu yolunjika komanso iwiri yozungulira ya magulu osankhidwa ogwirira ntchito. Masamba azinthu ndi ma data okhazikika amapereka zambiri zamagetsi ndi makina apadera kuti ziwunikidwe.
Kuti mupeze malangizo othandiza, perekani ma frequency range ofunikira, polarization, gain target, VSWR requirement, connector, power level, mounting arrangement, ndi operating environment. RF MISO ingathandize kuzindikira ma standard models oyenera kufananiza.
Fufuzanimndandanda wathunthu wazinthu za antenna ya nthawi ndi nthawi, ndemanga ya RF MISOkuthekera koyesa antennakapenaLumikizanani ndi gulu la RF MISOndi zofunikira zanu zaukadaulo.
Mafunso Ofunsidwa Kawirikawiri
Kodi kusiyana pakati pa antenna ya log periodic ndi antenna ya Yagi ndi kotani?
Antena ya Yagi nthawi zambiri imakonzedwa bwino kuti ikhale ndi gulu lopapatiza ndipo imagwiritsa ntchito chinthu chimodzi choyendetsedwa ndi ma parasitic directors ndi reflector. Gulu la dipole lozungulira nthawi zonse limagwiritsa ntchito zinthu zingapo zoyendetsedwa ndi scaled, ndipo lapangidwira ntchito ya broadband. Kusankha kolondola kumadalira bandwidth, gain, kukula ndi zofunikira muyeso.
Kodi antenna ya log periodic ingagwiritsidwe ntchito potumiza ndi kulandira?
Inde, ngati chitsanzo chosankhidwa, cholumikizira ndi mphamvu zomwe zasankhidwa zikukwaniritsa zofunikira za dongosolo. Tsimikizani kuti mphamvu zomwe zaloledwa zikupitirirabe komanso zapamwamba kwambiri mu datasheet yaposachedwa musanatumize.
Kodi antenna iliyonse ya log periodic imaphimba ma frequency ofanana?
Ayi. Mtundu uliwonse uli ndi gulu lake lapadera, phindu, VSWR, polarization ndi miyeso yakeyake yamakina. Mndandanda wa RF MISO umapereka mitundu yokhudza magulu osankhidwa, kotero mainjiniya ayenera kuyerekeza zofunikira zonse m'malo mosankha mtundu wa antenna yokha.
Kambiranani Zofunikira Zanu za Antena
Tumizani RF MISO gulu lanu logwiritsira ntchito ndi zofunikira pa mayeso kapena dongosolo kuti muthandizidwe posankha chitsanzo.
Imelo: info@rf-miso.com|Foni:+86 28 82695327 |www.rf-miso.com
Nthawi yotumizira: Disembala-27-2024
