Title :
A novel coplanar-waveguide bandpass filter using a dual-mode square-ring resonator
Author :
Huang, X.D. ; Cheng, C.H.
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Post & Telecommun.
Abstract :
A novel coplanar-waveguide (CPW) bandpass filter using a dual-mode resonator is presented in this letter. In the filter, a square-ring is used as the resonator, and a microstrip line stub attached the inner corner of the square-ring is used as the perturbation element. The square-ring and the input/output CPW are constructed on the two sides of a dielectric substrate, respectively. The filter has been investigated numerically and experimentally. Measured result shows that the filter has a minimum insertion loss of 1.2dB in its passband and an out-of-band rejection level of -45dB
Keywords :
band-pass filters; coplanar waveguide components; microstrip filters; microstrip resonators; -45 dB; 1.2 dB; bandpass filter; coplanar-waveguide; dielectric substrate; dual mode resonator; microstrip line stub; square-ring; Band pass filters; Coplanar waveguides; Dielectric loss measurement; Dielectric measurements; Dielectric substrates; Insertion loss; Loss measurement; Microstrip filters; Microstrip resonators; Resonator filters; Bandpass filter (BPF); coplanar-waveguide (CPW); dual mode resonator; square-ring;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.861358
