PIER Letters
 
Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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COMPACT COAXIAL PROBE-FED CP SUBSTRATE INTEGRATED WAVEGUIDE CAVITY-BACKED ANTENNA UTILIZING SLOT SPLIT RING

By J.-Q. Huang, F. Qiu, C. Jiang, D. Lei, Z. Tang, M. Yao, and Q.-X. Chu

Full Article PDF (475 KB)

Abstract:
A circularly polarized (CP) substrate integrated waveguide (SIW) cavity-backed slot antenna is proposed. A slot split ring (SSR) etched on the top metal surface of an SIW resonator is employed to generate the right-handed circularly polarized (RHCP) wave. The proposed antenna is excited directly by a coaxial probe with a proper distance from the symmetric axis of the SSR resonator. A prototype of the proposed CP antenna at the center frequency of 10 GHz is manufactured. As a result, the proposed antenna exhibits the advantages of both conventional planar antennas and metallic cavity backed antennas, including simple structure, compact size of 15.8×15.8 mm2, light weight, easy fabrication, high gain and wide axial ratio bandwidth. It is proved by experiment that an impedance bandwidth of 10.2% for the reflection coefficient less than -10 dB, an axial ratio (AR) bandwidth of 1.72% for AR less than 3 dB, and a RHCP gain 5.5 dBi have been obtained.

Citation:
J.-Q. Huang, F. Qiu, C. Jiang, D. Lei, Z. Tang, M. Yao, and Q.-X. Chu, "Compact Coaxial Probe-Fed CP Substrate Integrated Waveguide Cavity-Backed Antenna Utilizing Slot Split Ring," Progress In Electromagnetics Research Letters, Vol. 60, 107-112, 2016.
doi:10.2528/PIERL16041105

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