Chuan-Hao Zhang, You-Feng Cheng, Fan Peng, Cheng Liao
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Wideband filtering antenna design inspired by synthesis of flat-top broadside gain curve
A common design solution of wideband filtering antennas inspired by the synthesis of a flat-top gain curve is proposed by using mutual coupling effects. The realization of a frequency-varied flat-top gain curve based on specially designed subarrays is analyzed. Analysis results conclude a design process of generating filtering response based on shorting pins and parasitic structures. A single-layer rectangle patch array loaded with parasitic shorted patches is designed and analyzed for the validation. The proposed antenna possesses an impedance bandwidth of 4.95–6.05 GHz and a peak realized gain of 11.2 dBi. Besides, the design has its out-of-band rejection levels higher than 15 dB.
期刊介绍：
Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas.
- RF, Microwave, and Millimeter Waves
- Antennas and Propagation
- Submillimeter-Wave and Infrared Technology
- Optical Engineering
All papers are subject to peer review before publication
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