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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2013-05-26
Co-Design of a Compact Dual-Band Filter-Antenna for WLAN Application
By
Wei-Jun Wu,

    Dr. Wei-Jun Wu

    National Key Laboratory of Antennas and Microwave Technology

    Xidian University

    China

    Homepage

Qi-Feng Liu,

    Dr. Qi-Feng Liu

    Science and Technology on Electromagnetic Compatibility Laboratory

    China Ship Development and Design Center

    China

    Homepage

Qi Zhang,

    Dr. Qi Zhang

    The National Key Laboratory of EMC, China Ship Research & Design Center

    China

    Homepage

Jing-Ya Deng

    Dr. Jing-Ya Deng

    School of Science

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 40, 129-139, 2013
doi:10.2528/PIERL13030411 | Google Scholar

Abstract
A co-designed compact dual-band filter-antenna suitable to be embedded inside a wireless access point (AP) in the 2.45/5.2-GHz wireless local area network (WLAN) bands is presented. The proposed filter-antenna comprises a loop-loaded dual-band monopole radiator and a microstrip dual-band pseudo-interdigital bandpass filter. The monopole consists of a uniform width monopole, two identical capacitively loaded magnetic resonators and a top loaded loop. The two magnetic resonators are loaded at the center of the monopole for dual-band operation and the rectangular loop loaded at the top is involved for miniaturization. Instead of using the traditional 50Ω interfaces, the impedance between the filter and antenna is optimized to improve the performance. The filter-antenna and the system circuit board of an AP share the same substrate and ground plane. In this case the design can fully integrate the circuit board of the AP into an internal filter-antenna solution. The proposed filter-antenna provides good selectivity and rejection in out of band regions and omni-directional radiation patterns within the two desired bands. The measured results show good agreement with the simulated ones.
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Citation
Wei-Jun Wu, Qi-Feng Liu, Qi Zhang, and Jing-Ya Deng, "Co-Design of a Compact Dual-Band Filter-Antenna for WLAN Application," Progress In Electromagnetics Research Letters, Vol. 40, 129-139, 2013.
doi:10.2528/PIERL13030411
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