Design of Proximity Coupled Linear Antenna Array Using Kaiser Power Weighted Function

The implementation of power weighted functions in a linear antenna array is usually intended to obtain the desired antenna performance, especially the radiation pattern. This paper proposes the design of power weighted linear antenna array using Kaiser function. The challenges in the design are about choosing appropriate scheme of impedances and type of feeding network. The proposed antenna array consists of 1×8 square patches with proximity coupled feed. It is designed to operate at the X-band frequency intended for a radar application. The simulation result shows that Kaiser function utilization in linear antenna array suppresses sidelobe level (SLL) than antenna array with a uniform power distribution. The differences between obtained SLL and targeted SLL of the design is also exposed, so there must be an adjustment on Kaiser function parameter value, namely β. Based on β value of 2.0299 for 30 dB targeted SLL, the obtained SLL in the simulation is 14.93 dB.