Sefa Yokana Gulu

Cheng du leader microwave Tech.,(mtsogoleri-mw) Band Reject Selter (imadziwikanso kuti bandstop fyuluta kapena BSF), chigawo chapadera chomwe chimagwira ntchito yofunika kwambiri pakuwongolera ma frequency a siginecha. Mosiyana ndi fyuluta yodziwika bwino ya band-pass, yomwe imalola kuti zigawo zambiri zafupipafupi zidutse ndikuchepetsa mtundu wina, fyuluta yokana gulu imagwira ntchito mosiyana. Zimalola kuti zigawo zambiri zafupipafupi zidutse, koma zimachepetsera maulendo angapo afupipafupi mpaka otsika kwambiri.

Khalidwe lapaderali limapangitsa gulu lathu kukana zosefera kukhala zabwino pamapulogalamu omwe ma frequency ena amafunika kuchotsedwa kapena kuchepetsedwa kwambiri. Kaya mukufunika kuchotsa zosokoneza kapena zosefera zaphokoso zinazake, gulu lathu lokana zosefera lapangidwa kuti lizipereka magwiridwe antchito komanso zolondola.

Chosefera chokana gulu ndi mtundu wapadera wa fyuluta ya band-stop, yomwe kuyimitsidwa kwake kumakhala kochepa kwambiri. Izi zimawonetsetsa kuti ma frequency omwe akuwunikiridwa okha ndi omwe amachepetsedwa bwino, kusiya ma siginecha ena onse. Mlingo wolondolawu ndi wofunikira m'mafakitale ambiri, kuphatikiza matelefoni, ma audio, ndi zida zamagetsi.