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Progress In Electromagnetics Research Letters
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DEVELOPMENT OF A CIRCULARLY POLARIZED HMSIW ANTENNA

By H. Tian and T. Itoh

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Abstract:
A circularly polarized (CP) half-mode substrate integrated waveguide (HMSIW) cavity-backed antenna is developed by a novel design method in this paper. The single-fed antenna contains two coupled HMSIW cavities with orthogonal polarizations. Its design method evolves from filter synthesis procedure, which takes the advantage of equivalent circuit model to accelerate the optimization. The antenna radiates high-purity right handed CP waves with measured axial ratio (AR) of 0.33 dB at 3.55 GHz, while its gain and AR bandwidth are comparable to other CP SIW antennas. With the robust design method, the proposed antenna is competitive in practical applications.

Citation:
H. Tian and T. Itoh, "Development of a Circularly Polarized HMSIW Antenna," Progress In Electromagnetics Research Letters, Vol. 87, 81-87, 2019.
doi:10.2528/PIERL19080611
http://www.jpier.org/pierl/pier.php?paper=19080611

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