A novel triple-band filter with transmission zeros using tri-section SIRs

Author

Lin, Xue Ming ; Qing Xin Chu

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou

Volume

3

fYear

2008

fDate

21-24 April 2008

Firstpage

1261

Lastpage

1263

Abstract

A compact triple-band bandpass Alter (BPF) using tri-section stepped-impedance resonators (SIRs) is presented, in which the special coupling scheme at input/output (I/O) ports is adopted to produce tunable transmission zeros in order to generate high out-of-band suppression. A microstrip filter is simulated and fabricated, which achieves insertion loss of 1.5, 2.5 and 1.7 dB at 1.0, 2.4, 3.6 GHz, respectively. The simulated and measured results show a great agreement.

Keywords

band-pass filters; microstrip filters; resonator filters; compact triple band bandpass Alter; frequency 1.0 GHz; frequency 2.4 GHz; frequency 3.6 GHz; input/output ports; insertion loss; loss 1.5 dB; loss 1.7 dB; loss 2.5 dB; microstrip filter; special coupling scheme; transmission zeros; tri section stepped impedance resonators; triple band filter; Band pass filters; Couplings; Dual band; Filtering theory; Frequency; Impedance; Microstrip; Passband; Resonator filters; Tunable circuits and devices; Triple-band filter; bandpass filter (BPF); compact; stepped-impedance resonator (SIR); transmission zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-1879-4

Electronic_ISBN

978-1-4244-1880-0

Type

conf

DOI

10.1109/ICMMT.2008.4540664

Filename

4540664