Zosefera za ma frequency band pass ndi zida zamagetsi zomwe zimangolola kuti ma siginecha amtundu wanthawi yayitali adutse ndikuchepetsa ma siginecha pama frequency kunja kwa mulingowo. Zoseferazi zimagwiritsidwa ntchito kwambiri pamakina olankhulirana, zida zomvera, ndi zida zina zamagetsi zomwe zimafuna kuyankha pafupipafupi. M'nkhaniyi, tiwona zinthu zazikuluzikulu zosefera ma frequency band pass, kuphatikiza kuyankha kwawo pafupipafupi, bandwidth, ndi Q-factor.
Kuyankha pafupipafupi: Kuyankha pafupipafupi kwa frequency band pass fyuluta kumatsimikizira momwe imachepetsera ma siginecha kunja kwa passband ndi kuchuluka kwake komwe kumakulitsa ma siginecha mkati mwa passband. Chosefera chopangidwa bwino chapamwamba cha frequency band chidzakhala ndi kusintha kwakuthwa pakati pa passband ndi stopband, ndi ripple yochepa mu passband. Maonekedwe a curve kuyankha pafupipafupi amatsimikiziridwa ndi kapangidwe ka fyulutayo, ndipo imatha kudziwika ndi ma frequency ake apakati komanso bandwidth yake.
Bandwidth: Bandwidth ya frequency band pass frequency ndi kuchuluka kwa ma frequency omwe amaloledwa kudutsa fyuluta ndikuchepetsa pang'ono. Amatchulidwa ngati kusiyana pakati pa ma frequency apamwamba ndi apansi -3 dB, omwe ndi ma frequency omwe mphamvu ya fyuluta imachepetsedwa ndi 50% poyerekeza ndi mphamvu yayikulu mu passband. Bandwidth ya fyuluta yodutsa ma frequency band ndi gawo lofunikira lomwe limatsimikizira kusankha kwake komanso momwe angakane zizindikiro zosafunikira kunja kwa passband.
Q-Factor: Q-factor ya high frequency band pass fyuluta ndi muyeso wa kusankha kwake kapena kuthwa kwa kuyankha pafupipafupi kwa fyuluta. Zimatanthauzidwa ngati chiŵerengero chafupipafupi pakati pa bandwidth. Q-factor yapamwamba imagwirizana ndi bandwidth yochepetsetsa komanso kuyankha kwafupipafupi, pamene Q-factor yotsika imagwirizana ndi bandwidth yowonjezereka komanso kuyankha kwapang'onopang'ono. Q-factor ya high frequency band pass fyuluta ndi gawo lofunikira lomwe limatsimikizira momwe amagwirira ntchito pokana ma siginecha osafunikira kunja kwa passband.
Kutayika Kwakulowetsa: Kutayika koyika kwa frequency band pass pass ndi kuchuluka kwa chizindikiro chomwe chimachitika pamene chizindikiro chikudutsa pa fyuluta. Nthawi zambiri imawonetsedwa mu ma decibel ndipo ndi muyeso wa kuchuluka kwa fyulutayo imachepetsera chizindikiro mu passband. Chosefera chopangidwa bwino chapamwamba cha band pass band chiyenera kukhala ndi kutayika kochepa mu passband kuti zisawononge mtundu wa chizindikiro.
Kufananiza kwa Impedance: Kufananiza kwa Impedans ndi chinthu chofunikira kwambiri pazosefera zodutsa ma frequency band, makamaka pamakina olankhulirana. Kulowetsedwa ndi kutulutsa kwa fyuluta kuyenera kufananizidwa ndi gwero ndi kutsekeka kwa katundu kuti muchepetse zowunikira komanso kukhathamiritsa kusamutsa kwa siginecha. Fyuluta yofananira bwino ya frequency band pass idzakhala ndi kutayika kochepa komanso kusokoneza.
Pomaliza, zosefera zamtundu wa frequency band ndizofunikira kwambiri pamabwalo apakompyuta omwe amafunikira kuyankha pafupipafupi. Zofunikira zawo zikuphatikiza kuyankha pafupipafupi, bandwidth, Q-factor, kutayika koyika, ndi kufananiza kwa impedance. Chosefera chopangidwa bwino chapamwamba cha frequency band chikuyenera kukhala ndi kuyankha pafupipafupi, bandwidth yopapatiza, kutayika pang'ono, ndi kufananiza kwa impedance kuti zitsimikizire kuti zikuyenda bwino.
As a professional manufacturer of RF filters, our engineers have rich experience of customing design high frequency bandpass filter as the definition, more details can be consulted with us : sales@cdjx-mw.com
Nthawi yotumiza: May-10-2023
