Title :
A novel microstrip dual-mode bandpass filter with harmonic suppression
Author :
Huang, X.D. ; Cheng, C.H.
Author_Institution :
Dept. of Telecommun. Eng., Nanjing Univ. of Post & Telecommun.
fDate :
7/1/2006 12:00:00 AM
Abstract :
A novel dual-mode microstrip bandpass filter (BPF) with harmonic suppression is presented in this letter. The filter is composed of a perturbed square-ring resonator and two end-open L-shaped microstrip lines for the input and output of the resonator. The harmonic suppression of the BPF may be realized by choosing a proper length for the L-shaped microstrip line. The BPF has been investigated numerically and experimentally. Measured results show that the stop-band of the filter is increased up to near the third-order harmonic of the square-ring resonator due to harmonic suppression, and the rejection level is kept below -27dB
Keywords :
band-pass filters; harmonics suppression; microstrip filters; microstrip lines; microstrip resonators; L-shaped microstrip lines; dual-mode bandpass filter; harmonic suppression; perturbed square-ring resonator; third-order harmonics; Band pass filters; Bandwidth; Dielectric losses; Harmonics suppression; Microstrip filters; Microstrip resonators; Optical ring resonators; Power harmonic filters; Resonance; Resonator filters; Bandpass filter (BPF); dual mode resonator; harmonic suppression; square-ring;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.877122
