A Wideband Highly Efficient Omnidirectional Compact Antenna for WiMAX/Lower 5G Communications

Microstrip patch antenna (MPA) is widely used for different wireless communications such as WiMAX and fifth generation (5G). In this paper, a wideband, highly efficient, omnidirectional, compact novel patch antenna has been designed and reported for WiMAX/lower 5G communications. The proposed compact MPA is made on Rogers RT 5880 ( <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M1"> <a:msub> <a:mrow> <a:mi>ɛ</a:mi> </a:mrow> <a:mrow> <a:mi>r</a:mi> </a:mrow> </a:msub> <a:mo>=</a:mo> <a:mn>2.2</a:mn> </a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" id="M2"> <c:mi mathvariant="normal">tan</c:mi> <c:mtext> </c:mtext> <c:mfenced open="(" close=")"> <c:mrow> <c:mi>δ</c:mi> </c:mrow> </c:mfenced> <c:mo>=</c:mo> <c:mn>0.0009</c:mn> </c:math> ). The physical volume of the MPA is compact ( <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" id="M3"> <h:mn>32</h:mn> <h:mo>×</h:mo> <h:mn>32</h:mn> <h:mo>×</h:mo> <h:mn>0.79</h:mn> </h:math> mm3). The MPA consists of seven small square-shaped elements that are diagonally connected with each other. The 7-element antenna…