1. Kupindula kwa mlongoti
MlongotiKupeza kumatanthawuza chiŵerengero cha kuchuluka kwa mphamvu ya radiation ya mlongoti kumalo enaake odziwika ku mphamvu ya radiation ya mlongoti (kawirikawiri ndi gwero loyenera la ma radiation) pa mphamvu yomweyo. Magawo omwe akuyimira kupindula kwa mlongoti ndi dBd ndi dBi.
Tanthauzo lakuthupi la kupindula litha kumveka motere: kupanga chizindikiro cha kukula kwinakwake pamtunda wina, ngati gwero labwino lopanda njira likugwiritsidwa ntchito ngati mlongoti wotumizira, mphamvu yolowera ya 100W imafunika, pamene mlongoti wolunjika ndi phindu la G = 13dB (nthawi 20) umagwiritsidwa ntchito ngati mphamvu yotumizira / 5W = 50 yokhayo = 5W = 10. Mwa kuyankhula kwina, kupindula kwa mlongoti, malinga ndi momwe ma radiation ake amayendera pamtunda waukulu wa ma radiation, ndi kuchulukitsa kwa mphamvu yolowetsamo yomwe imakulitsidwa poyerekeza ndi gwero lopanda njira yoyenera.
Kupeza kwa mlongoti kumagwiritsidwa ntchito kuyeza kuthekera kwa mlongoti kutumiza ndi kulandira zidziwitso kunjira inayake ndipo ndi imodzi mwazinthu zofunika kwambiri posankha mlongoti. Kupeza kumagwirizana kwambiri ndi mtundu wa antenna. Kuchepetsa lobe yaikulu ya chitsanzo ndi yaying'ono lobe yam'mbali, kupindula kwakukulu. Ubale pakati pa kukula kwa lobe ndi kupindula kwa mlongoti ukuwonetsedwa mu Chithunzi 1-1.
Chithunzi 1-1
Pazikhalidwe zomwezo, kupindula kwakukulu, ndipamene mafunde a wailesi amafalikira. Komabe, pakukhazikitsa kwenikweni, kupindula kwa mlongoti kuyenera kusankhidwa moyenerera kutengera kufanana kwa mtengowo ndi malo omwe akufunika. Mwachitsanzo, pamene mtunda wofikira uli pafupi, kuti muwonetsetse kuti kufalikira kwa malo oyandikira, mlongoti wopeza wotsika wokhala ndi lobe yowongoka yotakata uyenera kusankhidwa.
2. Malingaliro okhudzana
dBd: poyerekeza ndi kupindula kwa mlongoti wofanana,
·dBi: pokhudzana ndi kupindula kwa mlongoti woyambira, ma radiation mbali zonse ndi ofanana. dBi=dBd+2.15
Lobe angle: ngodya yopangidwa ndi 3dB pansi pa nsonga yayikulu ya lobe mumtundu wa antenna, chonde onani m'lifupi mwa lobe kuti mumve zambiri, gwero labwino la radiation: limatanthawuza mlongoti wosavuta wa isotropic, womwe ndi gwero losavuta la radiation, lomwe lili ndi mawonekedwe ofanana mbali zonse mumlengalenga.
3. Njira yowerengera
Kupindula kwa mlongoti = 10lg (kachulukidwe kakachulukidwe kakachulukidwe ka mlongoti / kachulukidwe kakachulukidwe kamphamvu ka mlongoti)
Kuti mudziwe zambiri za antennas, chonde pitani:
Nthawi yotumiza: Dec-06-2024
