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2 February 2023 Design of wideband circularly-polarized double-layer microstrip antenna sub-array
Luoning Gan, Jinjia Ji, Shangping Kong, Zhaojun Yang
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Proceedings Volume 12462, Third International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022); 1246206 (2023) https://doi.org/10.1117/12.2660786
Event: International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022), 2022, Xi'an, China
Abstract
Circularly-polarized microstrip antenna is widely used in communication fields. However, conventional microstrip antenna is limited by its bandwidth and axial ratio characteristic. As a result, a 2×2 slot-fed circularly-polarized double-layer microstrip antenna array is proposed in this paper. The design of double-layer structure and corner-cut patch is applied to improve circularly-polarized performance. Impedance matching is well designed by H-shaped slot and microstrip line. The form of rotation array is used to decrease the axial ratio of the array. The simulated bandwidth for VSWR lower than 2.0 of the sub-array is 37.0% in the frequency range of 2.4GHz-3.5GHz, and 10.3dBi gain is obtained at the design frequency. Results obtained based on the proposed analysis can be used in the design of wideband circularly-polarized antenna.
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Luoning Gan, Jinjia Ji, Shangping Kong, and Zhaojun Yang "Design of wideband circularly-polarized double-layer microstrip antenna sub-array", Proc. SPIE 12462, Third International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022), 1246206 (2 February 2023); https://doi.org/10.1117/12.2660786
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KEYWORDS
Antennas
Polarization
Metals
Free space
Manufacturing
Structural design
Waveguides
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