A Low Cross-Polarization Microstrip Antenna Array for Millimeter Wave Applications

A low cross-polarization microstrip antenna array for millimeter wave (mmW) applications is proposed in this paper. The antenna element is composed of symmetric T-shaped patches with vias. The adoption of a double-sided symmetric radiation patch structure can suppress the cross-polarized electric fi...

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Bibliographic Details
Published in:International journal of antennas and propagation 2023-06, Vol.2023, p.1-11
Main Authors: Fu, Yanzhi, Lin, Yixiang, Shi, Changda
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Bandwidths
Communication
Cross polarization
Design
Electric fields
Energy
Microstrip antennas
Millimeter waves
Optimization
Phased arrays
Radar arrays
Radiation
Simulation
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Summary:A low cross-polarization microstrip antenna array for millimeter wave (mmW) applications is proposed in this paper. The antenna element is composed of symmetric T-shaped patches with vias. The adoption of a double-sided symmetric radiation patch structure can suppress the cross-polarized electric field, and the vias reduces energy leakage during the power transmission along the antenna patches. To verify the concept, a 1 × 8 antenna array is fabricated and measured. The measured −10 dB impedance of the antenna array is 28.4% (31 GHz–41.5 GHz) and the peak gain is 15 dBi. The cross polarization ratio is above 35 dB and the 3 dB beamwidths on E-plane and H-plane are 7.5° and 135°, respectively. The proposed compact size and low cross-polarization antenna array might be a good choice for phased array radar and 5th generation (5G) mobile communication applications.
ISSN:1687-5869
1687-5877
DOI:10.1155/2023/7622014