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Dual-band bandpass filter using embedded spiral resonator and broadside-coupled meander slot-line

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3 Author(s)
X. Luo ; University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China ; J. -G. Ma ; K. S. Yeo

A dual-band bandpass filter with high selectivity is proposed. The filter is composed of two parts: 1. two embedded spiral resonators with a non 0°-feed coupled scheme, 2. a broadside-coupled meander slot-line. This structure can introduce seven transmission zeros to achieve strong passband selectivity and good stopband rejection. Based on the structure, a dual-band bandpass filter is fabricated to operate at the WLAN bands (i.e. 2.4/5.2°GHz).

Published in:

Electronics Letters  (Volume:46 ,  Issue: 16 )