Abstract
This paper introduces a planar slotted waveguide array antenna with 12×12 elements for generating high energy beams. Differential feeding technique and cavity surface are employed to broaden the impedance bandwidth as well as the antenna performance. The high-gain and low side lobe level (SLL) are achieved by utilizing the 25-dB Taylor array synthesis method. Simulation results indicate that the array antenna has the impedance bandwidth from 2.85 GHz to 3.15 GHz (fractional bandwidth of 10%), the maximum realized gain of 29.3 dB at 3.0 GHz and the sidelobe level of -24.7 dB, becoming a potential candidate for high power applications.
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