Title :
CPW Lumped Elements Combined Microstrip for a Bandpass Filter Design
Author :
Xu, Wei-Qin ; Chang, Zhi-Yuan ; Ho, Min-Hua
Author_Institution :
Dept. of Electron. Eng., NCUE, Changhua
Abstract :
In this paper, we propose a novel design of a bandpass filter using combined coplanar waveguide (CPW) and microstrip. The filter is composed of the lumped elements implemented by the CPW structure and quarter-wavelength microstrip resonator. Zeros have been implanted in circuit design to reject adjacent channel interferences. The filter is built by cascading three circuit blocks with two of them being the CPW structured lumped element filtering circuits and the other one, a microstrip resonator, being placed in between. This filter has acquired a very sharp rejection and consequently, a good selectivity. The stopband bandwidth is also very wide in this filter design.
Keywords :
band-pass filters; coplanar waveguides; interference; lumped parameter networks; microstrip filters; network synthesis; waveguide filters; zero assignment; adjacent channel interference rejection; bandpass filter design; circuit design; combined coplanar waveguide; lumped elements; quarter-wavelength microstrip resonator; zero assignment; Band pass filters; Brain modeling; Circuit simulation; Cities and towns; Coplanar waveguides; Coupling circuits; Filtering theory; Microstrip filters; Microstrip resonators; Resonator filters; CPW lumped elements; circuit miniaturization; zeros assignments;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554866
