Abstract
<p class="Abstract"><span lang="EN-US"><em>Using crewless aircraft or Unmanned Aerial vehicles </em>(UAV)<em> is rife in the civil and military world. The problem that often occurs is that the </em>UAV<em> has disconnected from the control center. One of the reasons was that the aircraft was operating outside the radio control center's range. This study aims to design a control antenna with a higher gain than the previous research antenna, which is used as a reference. The method we used is designing a </em>2×8<em> circular array microstrip antenna using the Ansys high-frequency structure simulator </em>(HFSS)<em> software. The result gives a return loss value of -30.25 dB, a voltage standing wave ratio </em>(VSWR)<em> of </em>1.11<em>, and a bandwidth of </em>512,1 MHz<em>. The amount of gain is </em>12.94 dB.<em> The magnitude of the reflection coefficient of the designed antenna is </em>0.017.<em> This value means that the amount of power reflected by the designed antenna is </em>1.7%,<em> or the antenna is capable of capturing signals of up to </em>98.3%.</span></p>
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