Affiliations: [a] National Laboratory of Science and Technology on
Antennas and Microwaves, Xidian University, Xi'an, Shaanxi, China | [b] ZTE Corporation, Xi'an, Shaanxi, China
Correspondence:
[*]
Corresponding author: Z. Zhang, National Laboratory of Science
and Technology on Antennas and Microwaves, P.O. 377 Box, Xidian University,
Xi'an, Shaanxi 710071, China. Tel.: +86 29 8820 2669; Fax: +86 29 8820 2662;
E-mail: [email protected]
Abstract: Based on the double resonant properties of the complementary
hook-shaped resonator (CHSR), a novel miniaturized dual-band microstrip filter
is proposed for WLAN operations. The filter, which is only 0.067
λ_0 × 0.084 λ_0 in
overall dimensions, is composed of two opposite CHSRs and modified T-shaped
feed-lines. Two hook-shaped strips generate two respective passbands,
independently. The proposed filter is found to have two transmission zeros
around the high resonances for improved selectivity. To verify the proposed
method, a dual-band filter is implemented and measured, and the measurement
results agree well with the simulated data.
