Title :
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
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;
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
DOI :
10.1109/ICMMT.2008.4540664
