A doubly-trident microstrip bandpass filter with folded cross-coupled four-pole resonators

Abstract

1 nan-l ( -1 F, (a) = cosh (n -2)cosh-I (0) + cosh (1.3) na +n [ Abstract-This paper presents a microstrip handpass filter with cross-coupled four-pole resonator that using folding technique for IMT-2000 in 3G mohilc communications. The filter operates at 1.958GHz center frequency with 60MHz bandwidth and proposes -3.107dB insertion loss and -24.483dB return loss. The introduced structure prevails compact size and features the excellent performance for low spurious-mode. +cosh-' (F)]

A Compact Modified-Meander Resonator for Microwave Bandpass Filter with Harmonic-Suppression

“…The application of a resonator, has utilized to bandpass filter with the cross-coupled model which is often used, because of, this model can reduce the size and resulting the better passband response, four-pole resonators are basically to used [2][3][4], and shown in figure 5. …”