Abstract
A Substrate Integrated Isosceles Trapezoid extended ground antenna with dual band characteristics is presented. Simultaneous achievement of high bandwidth, gain and front to back ratio is challenging in the X-band applications. A slot and isosceles trapezoid structure is placed on the top plane of the cavity for radiation. The half mode is realized by splitting the full mode Substrate Integrated Waveguide along the perfect magnetic conductor walls for size reduction. In the open edge of the patch, two rectangular slits are loaded, to effectively enhance the bandwidth performance and improved front to back ratio which are required for X-band applications. The proposed antenna provides a gain of 7.4 dB with front to back ratio more than 10 dB throughout the bandwidth of 20.14%. This dual band antenna operates at 8.6 GHz and 10.19–12.69 GHz.
Published Version
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