Title :
A compressed-length 90 degrees -bend offset broadside-end-coupled bandpass filter
Author :
Tzuang, Ching-Kuang C. ; Chiang, Yit-Chyun ; Su Shyang
Author_Institution :
Inst. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A 21-22 GHz compressed-length offset broadside-end-coupled three-resonator bandpass filter is presented. The filter length, defined as the distance between the two interface planes governing the input and output ports, is reduced by approximately two-thirds for this filter as compared to the conventional colinear realization. The measured response shows less than 1.5 dB insertion loss and greater than 10 dB return loss in the passband. The noncolinear and offset broadside-end-coupled arrangement of such a filter makes it flexible for interface with the other microwave circuits in a communication system or subsystem design.<>
Keywords :
band-pass filters; microwave filters; passive filters; resonators; strip line components; 1.5 dB; 21 to 22 GHz; 90 degree bend; bandpass filter; broadside-end-coupled; compressed-length offset; return loss; suspended substrate striplines; Band pass filters; Bandwidth; Equivalent circuits; Frequency; Hydrogen; Loss measurement; Microwave circuits; Microwave filters; Prototypes; Resonator filters;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
