Compact tunable dual-band filter with mixed coupling

Author

Chuan Gai ; Xiao-Wei Zhu ; Wei Hong

Author_Institution

State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China

fYear

2014

fDate

16-18 June 2014

Firstpage

1

Lastpage

3

Abstract

This paper presents the design of novel tunable dual-band filter with a compact mixed coupling scheme. The two passband can be tuned simultaneously with the absolute bandwidth of first passband invariable. Theoretical analysis indicates that it is able to achieve desired coupling coefficients between the proposed resonators. For demonstration, a tunable dual-band filter covering 1 GHz-1.35GHz and 2.5GHz-3.4GHz is implemented with 90 MHz constant absolute bandwidth of first passband. Experimental results agree with theoretical and simulated predications excellently.

Keywords

band-pass filters; microwave filters; resonator filters; bandwidth 1 GHz to 1.35 GHz; bandwidth 2.5 GHz to 3.4 GHz; compact mixed coupling scheme; compact tunable filter; constant absolute bandwidth; dual-band filter; Band-pass filters; Bandwidth; Couplings; Dual band; Microwave filters; Passband; Resonator filters; Tunable filter; constant absolute bandwidth; dual-band; mixed coupling;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Radar, and Wireless Communication (MIKON), 2014 20th International Conference on

Conference_Location

Gdansk

Print_ISBN

978-617-607-553-0

Type

conf

DOI

10.1109/MIKON.2014.6899871

Filename

6899871