Design of a bandpass filter with wide passband and wide rejection bandwidth

Author

Huang, Wen-Hsia ; Hou, Teng-Bang ; Tang, Ching-Wen

Author_Institution

Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

905

Lastpage

908

Abstract

A bandpass filter with wide passband and wide rejection bandwidth is presented. The filter is composed of bandpass filters (BPF), together with a lowpass filter (LPF). With the simple structure, a good performance is proposed and implements simultaneously. The fractional bandwidth of the BPF is 55% (1.45-2.55 GHz), and with rejection level of 20 dB up to more than ten times of the passband frequency. The 50 Â¿ I/O ports can be directly connected to the filter without any adjustment, which is massively reducing the fabrication and analysis difficulties.

Keywords

band-pass filters; low-pass filters; bandpass filter; bandwidth 1.45 GHz to 2.55 GHz; lowpass filter; resistance 50 ohm; Band pass filters; Bandwidth; Coupling circuits; Distributed parameter circuits; Matrix converters; Passband; Power harmonic filters; Resonator filters; Transmission line matrix methods; Wideband; Bandpass filter; lowpass filter; parallel couple microstrip line (PCML); rejection bandwidth; spurious response;

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.2009.5384311

Filename

5384311