Abstract
In this article, electrically small, triple band, triple frequency X shaped patch antenna is presented. The proposed X shape patch antenna consists of five rectangular slots which produces dual band operation for Ku band applications and another one for K band applications. In order to achieve multiband operation from conventional rectangular slot, it is introduced three equilateral triangle slots in left, right and upper edge respectively, and two small triangular slots are protruding both sides of the feed line. By increasing the number of steps, the antenna’s operating bandwidth, with return loss less than -10 dB, covers the frequency ranges from 15.104 GHz to 15.632 GHz, 17.336 to 17.912 GHz which is suitable for Ku band applications and 18.476 to 19.28 GHz which is suitable for K band applications. The proposed antenna has also achieved symmetric and almost steady radiation patterns and peak gains of 4.80 dBi, 6.42 dBi and 3.91dBi at these operating bands.
Highlights
Each antenna operates at a single frequency but with the rapid development of modern wireless communication system and their applications, wider bandwidth and multifrequency are required, where a different antenna for different applications
The proposed X shape patch antenna consists of five rectangular slots which produces dual band operation for Ku band applications and another one for K band applications
In order to achieve multiband operation from conventional rectangular slot, it is introduced three equilateral triangle slots in left, right and upper edge respectively, and two small triangular slots are protruding both sides of the feed line
Summary
Each antenna operates at a single frequency but with the rapid development of modern wireless communication system and their applications, wider bandwidth and multifrequency are required, where a different antenna for different applications. In radar and space satellite communication application, microstrip patch antennas have great demand due to their low profile, mechanical robustness, compatible with MMIC designs, relatively compact and light in weight and double frequency operation (Balanis, 2012). They are easy and low-cost to manufacture and can be conformable in planar and non-planar planes. It can be seen that greater demand is created by means of quick growth of wireless communications and electronics for wireless devices that can obey different rules at different standards It the paved the way for wide usage of mobile phones in modern society resulting in mounting concerns surrounding its harmful radiation (Faruque, Islam, & Misran, 2010, 2011, 2012). A tripple triangular slot X shaped multiband patch antenna is designed with bandwidths of 528 MHz, 576 MHz and 804 MHz and 4.80 dBi, 6.72 dBi and 3.91 dBi peak gain of these particular operating bands respectively
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