1. Kuwonjezeka kwa ma antenna
AntenaKupeza mphamvu kumatanthauza chiŵerengero cha mphamvu ya radiation ya antenna mbali inayake yapadera ku mphamvu ya radiation ya antenna yofotokozera (nthawi zambiri gwero labwino la radiation point) pa mphamvu yolowera yomweyo. Ma parameter omwe amayimira phindu la antenna ndi dBd ndi dBi.
Tanthauzo lenileni la phindu lingamveke motere: kuti apange chizindikiro cha kukula kwina pamalo enaake pamtunda winawake, ngati gwero labwino losalunjika likugwiritsidwa ntchito ngati antenna yotumizira, mphamvu yolowera ya 100W imafunika, pomwe antenna yolunjika yokhala ndi phindu la G=13dB (nthawi 20) ikagwiritsidwa ntchito ngati antenna yotumizira, mphamvu yolowera ndi 100/20=5W yokha. Mwanjira ina, phindu la antenna, ponena za mphamvu yake ya kuwala mu kuwala kwakukulu, ndi kuchuluka kwa mphamvu yolowera yomwe imakulitsidwa poyerekeza ndi gwero labwino losalunjika.
Kupeza ma antenna kumagwiritsidwa ntchito poyesa kuthekera kwa antenna kutumiza ndi kulandira zizindikiro mbali inayake ndipo ndi chimodzi mwazofunikira kwambiri posankha antenna. Kupeza kumayenderana kwambiri ndi kapangidwe ka antenna. Kapangidwe ka antenna kakakhala kocheperako komanso kakang'ono, kamene kamakhala kokulirapo. Ubale pakati pa m'lifupi mwa antenna ndi kukula kwa antenna ukuwonetsedwa pa Chithunzi 1-1.
Chithunzi 1-1
Pansi pa mikhalidwe yomweyi, phindu likakwera, mafunde a wailesi amafalikira kwambiri. Komabe, pakukhazikitsa kwenikweni, phindu la antenna liyenera kusankhidwa moyenera kutengera kufanana kwa beam ndi dera lomwe likufunidwa. Mwachitsanzo, pamene mtunda wa coverage uli pafupi, kuti zitsimikizire kuti near point ikugwira ntchito bwino, antenna yotsika mtengo yokhala ndi lobe yolunjika bwino iyenera kusankhidwa.
2. Malingaliro ofanana
·dBd: poyerekeza ndi phindu la antenna yofanana,
·dBi: poyerekeza ndi phindu la antenna yochokera ku mfundo, kuwala mbali zonse ndi kofanana. dBi=dBd+2.15
Ngodya ya Lobe: ngodya yopangidwa ndi 3dB pansi pa lobe peak yayikulu mu kapangidwe ka antenna, chonde onani m'lifupi mwa lobe kuti mudziwe zambiri, gwero labwino la radiation point: limatanthauza antenna yoyenera ya isotropic, ndiko kuti, gwero losavuta la radiation point, yokhala ndi mawonekedwe ofanana a radiation mbali zonse mumlengalenga.
3. Fomula yowerengera
Kuchuluka kwa ma antenna = 10lg (kuchuluka kwa mphamvu ya radiation ya antenna/kuchuluka kwa mphamvu ya radiation ya antenna)
Kuti mudziwe zambiri zokhudza ma antenna, chonde pitani ku:
Nthawi yotumizira: Disembala-06-2024
