Notch Interference Filters

Cov ntxaij lim dej yog cov ntxaij lim dej, tseem hu ua kev cuam tshuam cov ntxaij lim dej, cov yeeb yaj kiab kho qhov muag siv rau spectral lossis xim segmentation.Raws li cov duab ntawm cov spectrum faib, nws muab faib ua band-pass lim, txiav tawm lim, Notch lim, thiab lim tshwj xeeb.Feem ntau, nws yog hu ua band-stop los yog band-suppression filter, uas yog hais txog lub lim uas muaj cov yam ntxwv ntawm concave spectral los ntawm lub teeb ntawm ib lub wavelength, kom deb li deb tau, los ntawm ntau lwm yam wavelengths li sai tau.Nws yog ib qho kev txiav-tawm lim, uas yog siv los tshem tawm lossis txo lub teeb tshwj xeeb thiab txhim kho lwm yam spectral zog.Qhov txiav tawm qhov tob thiab qhov flatness ntawm cheeb tsam kis tau tus mob yog qhov ntsuas qhov tseem ceeb ntawm qhov ntsuas.Cov ntxaij lim dej feem ntau tuaj yeem xa cov wavelengths feem ntau, tab sis attenuate lub teeb nyob rau hauv ib qho kev wavelength range (stop band) mus rau qib qis kawg, uas yog qhov txawv ntawm txoj kev siv thiab spectral nkhaus ntawm bandpass lim.