A High-Gain 25.4GHz Millimeter-Wave Radar Antenna

In this paper, a miniaturized, low paraflap, high gain, easy to integrate microstrip face array antenna is proposed for the problem of low gain of microstrip antenna. This antenna is composed of 8 1*8 series-connected feed wire array antennas and a feed network, in which the feed network adopts a series-parallel hybrid feeding method, and the patch in the line array antenna uses a Chebyshev distribution to control the cell width by controlling the current distribution. The simulation results show that the maximum gain of the cell antenna is 5.16 dB, the maximum gain of the line array antenna is 12.31 dB, and the maximum gain of the surface array antenna is 20.69 dB, the return loss( \({S_{11}}\) ) is −17.64 dB at 25.4 GHz, and the VSWR is less than 1.5, and the half-power beamwidth (HPBW) in the H-plane is 11.95 \(^\circ \) , and the HPBW in the E-plane is 12.5 \(^\circ \) . The half-power beamwidth (HPBW) in the H-plane is 11.95 \(^\circ \) , in the E-plane the HPBW is 12.66 \(^\circ \) , and the −10 dB impedance bandwidth is 260 MHz.