An edge-coupled bandpass filter with sharp skirt characteristics using tapped-line method

Author

Nam, Hee ; Jeon, Bong-Wook ; Yun, Tae-Soon ; Lee, Hyun-Wook ; Kim, Young-Woo ; Jeon, Byung-Kuk ; Lee, Jong-Chul

Author_Institution

Dept. of Wireless Commun. Eng., Kwangwoon Univ., Seoul, South Korea

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

2538

Lastpage

2541

Abstract

In this paper, an edge-coupled bandpass filter is presented using tapped-line method. In order to determine the tapped-line feeding position, J-inverter of the input resonator can be represented by its equivalent circuit using an input admittance. This filter provides compact design using a simplified mathematical design method for tapped-line geometry and sharp skirt characteristic by transmission-zero. This filter shows the insertion loss of 3 dB and return loss of 21.06 dB at the center frequency of 5.8 GHz.

Keywords

band-pass filters; equivalent circuits; microwave filters; resonators; J-inverter; edge-coupled bandpass filter; equivalent circuit; frequency 5.8 GHz; input admittance; insertion loss; loss 21.06 dB; loss 3 dB; resonator; return loss; sharp skirt characteristic; tapped-line feeding position; tapped-line method; Admittance; Band pass filters; Coupling circuits; Equivalent circuits; Integrated circuit technology; Microstrip filters; Microwave filters; Microwave technology; Q factor; Resonator filters; coupled-line bandpass filter; equivalent circuit; tapped-line; transmission-zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009. APMC 2009. Asia Pacific

Conference_Location

Singapore

Print_ISBN

978-1-4244-2801-4

Electronic_ISBN

978-1-4244-2802-1

Type

conf

DOI

10.1109/APMC.2009.5385224

Filename

5385224