Abstract
A compact size ultra-wideband (UWB) microstrip antenna with improved performance is proposed in this communication. In this article, the design of the antenna, which is based on the interaction between the circular patch and the rectangular slot cutting in the metal ground plane, as a result the required starting frequency can be achieved due the coupling between the metal ground plane and patch. UWB microstrip antenna is studied and designed using computer simulation. For verification of simulation results, the antenna is fabricated and measured. The simulation and measured results as reflection coefficient and radiation pattern are presented. Its measured results indicate that the proposed antennas achieve UWB from 1.49 GHz up to 18 GHz with improved the radiation pattern performance in the upper frequency range(up to 10 GHz). Proposed antenna achieve many wireless services including wireless local area (WLAN 2.5 or 5.6 GHz), GSM (1.71-1.88 GHz), PCS (1.93-1.99 GHz), Multiband GNNs, UWB (3.1-10.6 GHz), and for see through wall and concrete application.
Highlights
A different UWB antenna has been studied because of its superior performance characteristics; those include a more compact size, lower profile, and simple structure, which lead to lower cost, easy fabrication and convenient integration with monolithic RF circuits [1]
A simple UWB microstrip antenna is shown in figure 1
The antenna consists of circular patch in front of rectangular slot cutting in metal ground plane
Summary
A different UWB antenna has been studied because of its superior performance characteristics; those include a more compact size, lower profile, and simple structure, which lead to lower cost, easy fabrication and convenient integration with monolithic RF circuits [1]. Design of WLAN/LTE/UWB antenna by introducing a ground – cooperative radiating structure (GCRS) into the metal ground plane of a defected hexagonal monopole antenna (HMA) improve the performance of planar ultra-wideband monopole antennas to have stable omnidirectional radiation patterns, much more compact size, and boarder bandwidth [8]. Antennas with Improved Performance the radiation pattern performances in the upper frequency range and compact size 0.342 λo x0.231 λo where λo indicates the free space wavelength [9] In this communication, a simple UWB microstrip antenna is shown in figure 1. It will be demonstrated that a rectangular slot effectively tunes the mutual coupling between the circular patch and the ground plane over a very large frequency range to achieve UWB impedance matching as well as improve the stability of the radiation patterns at the higher portion of the UWB frequency range
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