Title :
Miniaturized Composite Right/Left-Handed Stepped-Impedance Resonator Bandpass Filter
Author :
Karimian, Shokrollah ; Hu, Zhirun
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
In this letter, a microstrip Stepped Impedance Resonator (SIR) bandpass filter (BPF) based on Composite Right/Left-Handed (CRLH) transmission lines is presented for the first time. Supported by theory, full-wave simulations and measurements, operational principle of the filter is explained and results are analysed. Also, comparison is made between this filter and its conventional right-handed (RH) counterpart. For the same centre frequency, fractional bandwidth and stop-band attenuation, the CRLH SIR BPF presented here proves to surpass its conventional counterpart in terms of size, being about 80% smaller, without degradation of performance. The CRLH SIR BPF is also significantly more controllable in its dimensions and response due to the fact that more elementary parameters are available in CRLH configuration.
Keywords :
band-pass filters; microstrip filters; resonator filters; transmission lines; CRLH SIR BPF; CRLH transmission lines; centre frequency; composite right-left-handed transmission lines; fractional bandwidth; full-wave simulations; microstrip stepped impedance resonator bandpass filter; miniaturized composite right-left-handed bandpass filter; stop-band attenuation; Band pass filters; Couplings; Impedance; Integrated circuit modeling; Microwave filters; Optical resonators; Wireless communication; Left-handed (LH); microstrip bandpass filter; quarter-wavelength; stepped impedance resonator (SIR);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2012.2206018
