Title :
Dual-Band Bandpass and Bandstop Filters Using Composite Right/Left-Handed Metamaterial Transmission Lines
Author :
Tseng, Chao-Hsiung ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA
Abstract :
In this paper, dual-band bandpass and bandstop filters using composite right/left-handed (CRLH) metamaterial transmission lines (TLs) are developed. The conventional bandpass and bandstop filters are first designed using quarter-wave short-circuited and open-circuited stubs, respectively. Then the dual-band filters with arbitrary dual operating bands can then be easily implemented by replacing the microstrip lines with the CRLH TLs. The dual-band bandpass and bandstop filters using the CRLH TLs are experimentally demonstrated at dual operating frequencies 1 GHz and 1.9 GHz. The measured results are in a good agreement with the simulated results. From the measured performances, the dual-band bandpass filter has 29.8% and 17.3% pass bandwidths, while the dual-band bandstop filter has 12.2% and 6.9% stop bandwidths with 30dB attenuation
Keywords :
band-pass filters; band-stop filters; metamaterials; microstrip lines; transmission lines; 1 GHz; 1.9 GHz; bandstop filters; composite right/left-handed metamaterial; dual-band bandpass; microstrip lines; open circuited stub; quarter wave short circuited stub; transmission lines; Band pass filters; Dual band; Frequency; Metamaterials; Microstrip filters; Microwave filters; Passband; Resonator filters; Transmission line measurements; Transmission lines; Bandpass filters; bandstop filters; dual-band; left-handed (LH); transmission lines (TLs);
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249869
