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

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APMC.2007.4554866

Filename

4554866