New compact bandpass filter using microstrip /spl lambda//4 resonators with open stub inverter

Author

Lee, Jae-Ryong ; Cho, Jeong-Hoon ; Yun, Sang-Won

Author_Institution

Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea

Volume

10

Issue

12

fYear

2000

Firstpage

526

Lastpage

527

Abstract

A novel bandpass filter using microstrip quarter-wavelength resonators is proposed. The proposed filter consists of the open stub inverter between quarter-wavelength resonators, which results in a compact design as well as low loss. The tapped open stub not only works as a K-inverter but also introduces an attenuation pole. The attenuation pole can be located at the upper or lower side of the passband by adjusting the open stub length. A two-pole Chebyshev bandpass filter is designed and tested at 1.99 GHz. A four-pole bandpass filter of elliptic-type performance is also designed and tested at 2.015 GHz.

Keywords

Chebyshev filters; UHF filters; band-pass filters; elliptic filters; microstrip filters; microstrip resonators; passive filters; poles and zeros; resonator filters; 1.99 GHz; 2.015 GHz; K-inverter; attenuation pole; compact bandpass filter; elliptic-type performance; four-pole bandpass filter; low loss design; microstrip resonators; open stub inverter; quarter-wavelength resonators; tapped open stub; two-pole Chebyshev filter; Attenuation; Band pass filters; Impedance; Insertion loss; Inverters; Microstrip filters; Microstrip resonators; Passband; Resonator filters; Testing;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.895091

Filename

895091