A Linear Microstrip Antenna Array Having Low Sidelobe Level

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Yoseaf, A.; Matzner, H. (Electric & Electronics Department, Sami Shamoon College of Engineering, Beer-Sheva 84100, Israel)
Fahoum, N. (Communication Department, HIT-Holon Institute of Technology, 58102 Holon, Israel)

A microstrip antenna linear array having 5 elements, fed by Dolph-Chebyshev amplitude weights and equal phases is proposed. A suitable microstrip divider is placed below the plane of the elements and its output ports are connected by vertical wires to the microstrip elements. It is shown that in order to reduce the strong mutual coupling between the divider and the microstrip elements one needs to set the microstrip elements above the ground plane, where the divider strips are below the common ground plane. The antenna was simulated and measured, having approximate bandwidth of 18% and sidelobe level of about 17 dB. Good agreement between simulation and measurement was achieved.