Zosefera za Bandpass

Sefa ya band-pass kapena bandpass filter (BPF) ndi chipangizo chomwe chimadutsa ma frequency mkati mwa mulingo wina wake ndikukana (kuchepetsa) ma frequency kunja kwa mulingowo.
Zosefera za bandpass zimagwiritsidwa ntchito kwambiri pama transmitters opanda zingwe ndi olandila. Ntchito yayikulu ya fyuluta yotereyi mu transmitter ndikuchepetsa bandwidth ya siginecha yotulutsa ku gulu lomwe laperekedwa kuti litumize. Izi zimalepheretsa chowulutsira kusokoneza masiteshoni ena. Mu cholandirira, fyuluta ya bandpass imalola kuti ma siginecha azitha kumveka kapena kusinthidwa pafupipafupi, kwinaku akuletsa ma siginoloji pamafuriji osafunika kuti asadutse. Zizindikiro pamafuriji akunja kwa bandi yomwe wolandila amayang'ana, amatha kudzaza kapena kuwononga wolandila. Kuphatikiza apo, amatha kupanga zosakaniza zosafunikira zomwe zimagwera mugulu ndikusokoneza chizindikiro cha chidwi. Wideband olandira makamaka atengeke kusokoneza koteroko.[3] Fyuluta ya bandpass imakonzekeretsanso kuchuluka kwa ma signal-to-noise ndi kukhudzika kwa wolandira.

Potumiza ndi kulandira mapulogalamu, zosefera zopangidwa bwino za bandpass, zokhala ndi bandwidth yabwino kwambiri pamachitidwe ndi liwiro la kulumikizana komwe kukugwiritsidwa ntchito, kukulitsa kuchuluka kwa ma transmitter omwe angakhalepo mu dongosolo, ndikuchepetsa kusokoneza kapena mpikisano pakati pa ma siginecha.

Kunja kwa zamagetsi ndi kukonza ma sign, chitsanzo chimodzi chakugwiritsa ntchito zosefera za band-pass zili mu sayansi yamlengalenga. Ndizofala kusefa zaposachedwa zanyengo zam'mlengalenga zomwe zimakhala ndi nthawi, mwachitsanzo, masiku 3 mpaka 10, kotero kuti mvula yamkuntho yokhayo imakhalabe ngati kusinthasintha kwa magawo a data.