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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-09-28
A Compact Single Layer Filtering Antenna with DGS for 5.1 GHz Application
By
Hu Chang,

    Dr. Hu Chang

    Information Engineering College of North China University of Technology

    China

    Homepage

Mengxin Liu,

    Dr. Mengxin Liu

    Information Engineering College

    North China University of Technology

    China

    Homepage

Daming Lin,

    Dr. Daming Lin

    Research Institute of Highway, Ministry of Transport

    China

    Homepage

Jie Wang

    Dr. Jie Wang

    College of Civil Engineering of North China University of Technology

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 107, 1-7, 2022
doi:10.2528/PIERL22072703 | Google Scholar

Abstract
A compact bandpass filtering antenna operating at 5.1 GHz is introduced. The radiation layer makes up of a U-shaped patch and a trident resonator. The U-shaped patch is both the antenna and the last stage of the filter, which is excited by the insertion coupling part of the trident resonator. To improve the impedance matching and lower stopband suppression, a defective ground structure (DGS) is used. The dimension of the antenna is 0.36λ0×0.36λ0×0.01λ0 (λ0 is the wavelength at 5.1 GHz) without a complex external feed structure, which has enough bandwidth, a good frequency skirt selectivity, and a flat passband response. The measurement results manifest that the impedance bandwidth is 110 MHz, and the peak gain is 3.88 dBi. In addition, the filtering antenna also has a sharp roll-off rate and a satisfactory level of out-of-band suppression in the stopband.
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Citation
Hu Chang, Mengxin Liu, Daming Lin, and Jie Wang, "A Compact Single Layer Filtering Antenna with DGS for 5.1 GHz Application," Progress In Electromagnetics Research Letters, Vol. 107, 1-7, 2022.
doi:10.2528/PIERL22072703
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