Title :
The microstrip bandpass filters with wide stopband range
Author :
Chen, Ming-Guang ; Tang, Ching-Wen ; Hsieh, Ping-Ju ; Wu, Janne-Wha
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi
Abstract :
The microstrip bandpass filter with wide stopband range is presented. This filter is constructed by inserting the resonance circuit into the coupled capacitively-load lines. Using the resonance circuits to compensate the even- and odd-mode velocity of the coupled capacitively-load lines, the higher-ordered harmonic frequency can be reduced. The 40-dB stopband suppression level is obtained up to four times the center frequency. Three examples are designed and fabricated to evidence the filter configuration.
Keywords :
band-pass filters; band-stop filters; microstrip filters; capacitively-load lines; higher-ordered harmonic frequency; microstrip bandpass filters; resonance circuit; stopband suppression; wide stopband range; Band pass filters; Coupling circuits; Feeds; Filtering theory; Frequency; Microstrip filters; Passband; Power harmonic filters; Resonance; Resonator filters; Bandpass filter; coupled capacitively-load lines;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429731
