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Design of the Circularly Polarized Ring Microstrip Antenna with Shorting Pins
IEICE TRANSACTIONS on Communications
Publication Date: 2022/01/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Antennas and Propagation
array antenna, dual band, ring microstrip antenna, shorting pin,
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We present a novel circularly polarized ring microstrip antenna and its design. The shorting pins discretely disposed on the inner edge of the ring microstrip antenna are introduced as a new degree of freedom for improving the resonance frequency control. The number and diameter of the shorting pins control the resonance frequency; the resonance frequency can be almost constant with respect to the inner/outer diameter ratio, which expands the use of the ring microstrip antenna. The dual-band antenna where the proposed antenna includes another ring microstrip antenna is designed and measured, and simulated results agree well with the measured one.