Abstract:A dual-path coupled-line circular ring resonator filter synthesis is presented. The topology comprises identical coupled lines in series duplicated to form dual-path coupled-line interconnections. A bandpass response of n th order equal to (n/2) + 1, corresponds to controllable transmission zeros (TZs) found on both sides of the passband by varying the values of the even-and odd-mode impedances of the coupled lines, denoted Z oe and Z oo , respectively. Concerning the efficiency of controllable electrical char… Show more
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