Dual-Polarized 60 GHz Van Atta Array with Substrate Integrated Waveguide Feeding Network

This paper presents a dual-polarized Van Atta array operating in the millimeter-wave band, based on patch antennas and a substrate integrated waveguide (SIW) feeding network. The array, with a resonance frequency around 60 GHz, was fabricated using low temperature cofired ceramics (LTCC) technology and characterized in millimeter-wave anechoic chamber. Good agreement between simulated and measured results was observed, with a maximum radar cross section (RCS) of -30 dBsm and an angular range of nearly 66 degrees in which the RCS does not drop more than 10 dB relative to the peak. To the best of the authors' knowledge, this is the first reported realization of a dual-polarized Van Atta array at millimeter-wave frequencies with patch antennas fed via an SIW network.