A wideband X‐band circularly polarized printed monopole antenna backed by AMC reflector for 5G/IoT CubeSat applications

This letter presents a coplanar waveguide‐fed printed monopole antenna backed by an artificial magnetic conductor (AMC) reflector. The proposed monopole antenna achieves circular polarization by loading the monopole with a printed coil and using an asymmetric ground plane. In addition, the AMC incre...

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Bibliographic Details
Published in:	Microwave and optical technology letters Vol. 66; no. 2
Main Authors:	El Hammoumi, Mohamed, Tubbal, Faisel, Idrissi, Najiba El Amrani El, Theoharis, Panagiotis I., Abulgasem, Suhila, Raad, Raad
Format:	Journal Article
Language:	English
Published:	New York Wiley Subscription Services, Inc 01-02-2024
Subjects:	Antenna gain artificial magnetic conductor Bandwidths Circular polarization Coplanar waveguides CubeSat Ground plane IoT Microstrip antennas Monopole antennas Unit cell wideband wideband antenna
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Summary:	This letter presents a coplanar waveguide‐fed printed monopole antenna backed by an artificial magnetic conductor (AMC) reflector. The proposed monopole antenna achieves circular polarization by loading the monopole with a printed coil and using an asymmetric ground plane. In addition, the AMC increases the antenna gain while maintaining a wide axial ratio (AR) bandwidth. The unit cell of the AMC is based on a Minkowski‐like prefractal geometry. The antenna is fabricated and measured with a total size of 1.07 λ0 × 1.07 λ0 × 0.25 λ0 at the operating frequency of 8.5 GHz. The measured results show a wide −10 dB impedance bandwidth of 26.9% (7.12–9.38 GHz), a wide 3 dB AR bandwidth of 22.23% (8–9.89 GHz) as well as a peak gain of 8.3 dBi at 8.5 GHz. This is significantly better than comparable antennas in addition to this design being the smallest in size.
ISSN:	0895-2477 1098-2760
DOI:	10.1002/mop.34059