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A circular polarization (CP) textile antenna is designed for Global Positioning System (GPS) application. The truncated rectangular patch antenna is has a full ground plane from Shieldit Super and felt fabric as a substrate. The proposed antenna operates at 1.575 GHz with a good bandwidth from 1.540 to 1.625 GHz. The optimized chamfer has been made at two edges of a rectangular patch in order to produce...
A compact and high gain of circular super-wideband (SWB) antenna is proposed in this article. The proposed antenna has a design of basic circular patch with partial ground and a copper reflector to realize gain and bandwith enhancement. The significant feature of this design is the cautious manufacturing of the feed line with additional of two microstrip lines between the patch and the feed line....
The goal of this paper is to designed ultra-wide band (UWB) array antenna for biomedical application. The array arrangement is introduced to improve the performance of the antenna in terms of return loss, gain, bandwidth, and directivity. In this paper, a four-element antenna array is presented. The antenna array is composed of quarter wave feed network along with four-identical circular patch antenna...
This work presents an analytical framework for characterizing the performance of cooperative and non-cooperative spectrum sensing schemes by figuring out the tradeoff between the achieved diversity and coding gains in each scheme. Based on this analysis, we try to answer the fundamental question: can we dispense with SUs cooperation and still achieve an arbitrary diversity gain? It is shown that this...
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