Synthesis of dual-band bandpass filters using successive frequency transformations and circuit conversions

Author

Guan, Xuehui ; Ma, Zhewang ; Cai, Peng ; Kobayashi, Yoshio ; Anada, Tetsuo ; Hagiwara, Gen

Author_Institution

Sch. of Commun. & Inf. Eng., Shanghai Univ., China

Volume

16

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

110

Lastpage

112

Abstract

A novel method is proposed to synthesize dual-band bandpass filters (BPFs) from a prototype low-pass filter. By implementing successive frequency transformations and circuit conversions, a new filter topology is obtained which consists of only admittance inverters and series resonators, and is thereby easy to be realized by using conventional distributed elements. A dual-band BPF with center frequencies of 1.8GHz and 2.4GHz is designed and fabricated using microstrip lines and stubs. The simulated and measured results show a good agreement and validate the proposed theory.

Keywords

band-pass filters; invertors; low-pass filters; microstrip lines; network synthesis; network topology; 1.8 GHz; 2.4 GHz; admittance inverter; bandpass filter; circuit conversion; conventional distributed element; dual-band filter; microstrip line; microstrip stub; prototype low-pass filter; series resonator; successive frequency transformation; Admittance; Band pass filters; Circuit synthesis; Circuit topology; Dual band; Frequency conversion; Frequency synthesizers; Low pass filters; Prototypes; Resonator filters; Admittance inverter; dual-band filter; frequency transformation; microstrip line;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2006.869868

Filename

1603582