Kyauta ne, babu asusu
Kalkuleta Length Antenna
Yi ƙididdige madaidaicin madaurin rabin-kala na dipole ko igiyar ruwa ta kwata daga mita. Daidaita abin gajarta don ganin tsawon farawa mai aiki da kowace ƙafar dipole.
Ta yaya zan lissafta tsawon eriyar dipole daga mita?
Da farko lissafta tsayin raƙuman ruwa azaman saurin haske da aka raba ta mita. Rabin rabin igiyar igiyar ruwa shine kusan rabin wannan tsayin tsayin duka, tare da ƙafafu guda biyu daidai; monopole na kwata-kwata kusan kashi ɗaya ne. Abun gajarta da za'a iya gyarawa na iya samar da kimanta farawa mai amfani, amma tsayin ƙarshe ya dogara da ƙirar eriya da kewaye.
Tambayoyin da ake yawan yi
Ta yaya zan lissafta tsawon eriyar dipole daga mita?
Da farko lissafta tsayin raƙuman ruwa azaman saurin haske da aka raba ta mita. Rabin rabin igiyar igiyar ruwa shine kusan rabin wannan tsayin tsayin duka, tare da ƙafafu guda biyu daidai; monopole na kwata-kwata kusan kashi ɗaya ne. Abun gajarta da za'a iya gyarawa na iya samar da kimanta farawa mai amfani, amma tsayin ƙarshe ya dogara da ƙirar eriya da kewaye.
Ana loda kimar eriya ta?
A'a. Lissafin yana gudana a cikin wannan mai binciken; Ba a loda kimar da aka shigar ko adana ta wannan kayan aikin.
Menene tsawon dipole mai raƙuman ruwa a 100 MHz?
A cikin sarari kyauta, tsayin daka a 100 MHz yana kusan 2.998 m, don haka madaidaicin dipole rabin-ƙara shine kusan 1.499 m duka, ko kusan 0.749 m kowace ƙafa. Eriya mai aiki na iya amfani da abin ragewa kuma ya kamata a saurara a wurin da aka shigar.
Yaya tsawon lokacin eriya-kwata?
Madaidaicin jagorar jagorar sarari kyauta shine kashi ɗaya cikin huɗu na tsawon zango: saurin hasken da aka raba da mitar sau huɗu. Madaidaicin tsayin da aka daidaita zai iya bambanta tare da jagora, ciyarwa, ƙasa da kewaye.
Menene ma'anar gajarta?
Yana haɓaka tsayin ɓangarorin sarari kyauta don samar da ƙimar farawa don jagorar aiki. Tsoffin ka'ida ce kawai; ba shine ma'aunin saurin kebul na coaxial ba kuma baya maye gurbin aunawa ko kunnawa.
Shin wannan kalkuleta yana ba da garantin eriya mai kyau ko aminci?
A'a. Yana ƙididdige ainihin juzu'in juzu'in rabin igiyar igiyar ruwa ko kwata-kwata monopole geometry. Haƙiƙancin rashin ƙarfi da resonance ya dogara da ginin da wurin. Bi dokokin rediyo da amintattun ayyukan shigarwa, kuma tabbatar da kayan aiki masu dacewa.