- Kodi phindu la mlongoti ndi chiyani?
Mlongotiphindu limatanthawuza chiŵerengero cha kachulukidwe ka mphamvu ya siginecha yopangidwa ndi mlongoti weniweni ndi gawo lowunikira loyenera pamalo omwewo mumlengalenga pansi pa chikhalidwe cha mphamvu yolowera yofanana. Imalongosola mochulukira momwe mlongoti umawalitsira mphamvu yolowetsamo mokhazikika. Kupindula mwachiwonekere kumagwirizana kwambiri ndi chitsanzo cha antenna. Kuchepetsa lobe yaikulu ya chitsanzo ndi yaying'ono lobe yam'mbali, kupindula kwakukulu. Kupeza kwa mlongoti kumagwiritsidwa ntchito kuyeza kuthekera kwa mlongoti kutumiza ndi kulandira ma siginecha mbali ina yake. Ndi imodzi mwazinthu zofunika kwambiri posankha tinyanga toyambira.
Nthawi zambiri, kuwongolera kopindulitsa kumadalira kuchepetsa kukula kwa ma radiation ofukula kwinaku ndikusunga ma radiation amnidirectional mundege yopingasa. Kupindula kwa mlongoti ndikofunikira kwambiri pamayendedwe amachitidwe olumikizirana ndi mafoni chifukwa kumatsimikizira mulingo wazizindikiro m'mphepete mwa selo. Kuchulukitsa phindu kumatha kukulitsa kufalikira kwa netiweki mbali ina, kapena kuonjezera phindu pamlingo wina. Makina aliwonse am'manja ndi njira ziwiri. Kuchulukitsa kupindula kwa mlongoti kungathe kuchepetsa nthawi imodzi phindu la bajeti ya njira ziwiri. Kuphatikiza apo, magawo omwe akuyimira kupindula kwa mlongoti ndi dBd ndi dBi. dBi ndiye phindu loyerekeza ndi mlongoti woyambira, ndipo ma radiation mbali zonse ndi ofanana; dBd imagwirizana ndi kupindula kwa mlongoti wofanana dBi=dBd+2.15. Pazifukwa zomwezo, kupindula kwakukulu, ndipamenenso mafunde a wailesi amatha kufalikira kwautali.
Chithunzi cha antenna
Posankha kupindula kwa mlongoti, kuyenera kutsimikiziridwa kutengera zosowa za pulogalamuyo.
- Kulankhulana kwakutali: Ngati mtunda wolankhulana uli waufupi ndipo palibe zopinga zambiri, kupindula kwakukulu kwa mlongoti sikungafunike. Pankhaniyi, phindu lochepa (monga0-10dB) akhoza kusankhidwa.
RM-BDHA0308-8(0.3-0.8GHz,8 Typ.dBi)
Kuyankhulana kwapakatikati: Pakulankhulana kwapakatikati, kupindula kwa mlongoti kungafunike kubweza kutsitsa kwa siginecha Q komwe kumachitika chifukwa cha mtunda wotumizira, ndikuganiziranso zopinga zomwe zimachitika m'chilengedwe. Pankhaniyi, phindu la mlongoti likhoza kukhazikitsidwa pakati10 ndi 20 dB.
RM-SGHA28-15(26.5-40 GHz ,15 Typ. dBi )
Kulankhulana kwakutali: Pakulankhulana komwe kumafunika kupitilira mtunda wautali kapena zopinga zambiri, kupindula kwa tinyanga tating'ono kumatha kufunikira kuti tipereke mphamvu yokwanira yazizindikiro kuti tithane ndi zovuta za mtunda wotumizira ndi zopinga. Pankhaniyi, phindu la mlongoti likhoza kukhazikitsidwa pakati 20 ndi 30 dB.
RM-SGHA2.2-25(325-500GHz,25 Typ. dBi)
Malo aphokoso kwambiri: Ngati pali zosokoneza komanso phokoso lalikulu m'malo olankhulirana, tinyanga zolemera kwambiri zimatha kuthandizira kuwongolera chiwongolero cha ma sign-to-phokoso ndikuwongolera kulumikizana bwino.
Tiyenera kuzindikira kuti kupindula kwa mlongoti kungathe kutsatiridwa ndi nsembe pazinthu zina, monga kuwongolera kwa mlongoti, kuphimba, mtengo, ndi zina zotero. mkhalidwe. Njira yabwino ndikuyesa mayeso a m'munda kapena kugwiritsa ntchito pulogalamu yoyeserera kuti muwunikire momwe ntchitoyo ikugwirira ntchito mosiyanasiyana kuti mupeze malo oyenera kupindula mwachilengedwe.
Kuti mudziwe zambiri za antennas, chonde pitani:
Nthawi yotumiza: Nov-14-2024
