Optimized Dual Frequency, Wideband Millimeter-Wave Antenna Array for Next Generation Advanced Imaging Technology

In this paper, a dual frequency, wideband antenna array is designed by combining a high frequency subarray with a low frequency subarray. The image of the dual frequency array is obtained by multiplying the images of the two subarrays. The PSF analysis and the system imaging simulation show that the grating lobes are significantly reduced for the dual frequency array with fewer radar modules/elements than the conventional array. This design will make the new generation system superior to the conventional scanning system.