Abstract
Gain improvement of a sector antenna of base station for mobile phone using microstrip antenna (MSA) array with curved woodpile Electromagnetic Band Gap (EBG) is presented. The advantages of this proposed antenna are easy fabrication and installation, high gain, and light weight. Moreover, it provides a fan-shaped radiation pattern and wider in the horizontal direction, which appropriate for mobile phone base station. The half-power beam widths in the H-plane and E-plane are 40 and 8 degrees, respectively. The paper also presents the design procedures of a 1×8 array antenna using MSAs associated with U-shaped reflector for decreasing their back and side lobes. A Computer Simulation Technology (CST) software has been used to compute the reflection coefficient (S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> ), radiation patterns, and gain of this antenna. The bandwidth, at S11 (-10 dB), is enough which can be well utilized for 3G base station, with a gain 20 dB.
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