Title :
Compact dual-band bandpass filter using combined CRLH resonator and right-handed open stubs loaded resonator
Author :
Long Chen ; Yonglun Luo ; Xiaolei Ma
Author_Institution :
Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol., Chengdu, China
Abstract :
A compact microstrip dual-band bandpass filter using combined zeroth-order resonance mode of composite right/left-handed resonator (CRLHR) and right-handed (RH) open stubs loaded resonator (OSLR) is proposed. The CRLHR cell is composed of interdigital capacitor and three metallic vias, the OSLR consists of two identical open stubs loaded. The proposed filter, with a very compact size of 8.9 × 11.2 mm2, is centred at 3.5/5.8 GHz with the measured relative 3-dB bandwidth larger than 11% and 6%, respectively. Measurement results match well with simulation ones. Good properties of low in-band insertion loss, good out-band rejection, and compact size make it very suitable for practical applications (WiMAX/WLAN).
Keywords :
band-pass filters; microstrip filters; microwave metamaterials; resonators; CRLH resonator; OSLR; WiMAX-WLAN; combined zeroth-order resonance mode; compact microstrip dual-band bandpass filter; compact size; composite right-left-handed resonator; frequency 3.5 GHz; frequency 5.8 GHz; in-band insertion loss; interdigital capacitor; metallic vias; out-band rejection; right-handed open stub-loaded resonator; Couplings; Dual band; Equivalent circuits; Filtering theory; Microwave filters; Passband; bandpass filter; composite right/left-handed (CRLH); open stub resonator;
Conference_Titel :
Electronic Packaging Technology (ICEPT), 2014 15th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICEPT.2014.6922870
