A broadband directional circularly polarized spiral antenna on EBG structure

David Zeppettella and Mohammod Ali

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 11, 1563-1585

Abstract: A new low profile broadband directional spiral antenna design on a planar EBG structure is introduced which is suitable for aircraft structural integration. The proposed antenna has the (greater than 4 dBiC) gain and axial ratio (less than 3-dB) bandwidth of 400–800 MHz (except for a narrow frequency range of 505–530 MHz) within a total thickness of one tenth of the wavelength. Meausured peak gain is 7.5 dBiC while gain at 400 and 500 MHz are 6 and 7.2 dBiC, respectively.Abbreviations: EBG: Electromagnetic Bandgap; HIS: High Impedance Surface; SATCOM: Satellite Communications; UHF: Ultra High Frequency; CP: Circularly Polarized; BW: Bandwidth; AR: Axial Ratio

Date: 2020
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DOI: 10.1080/09205071.2020.1774927

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