Beam-Steerable Phased Antenna Arrays Using Substrate-Integrated Waveguide Phase Shifters

摘要

The design of two beam-steerable phased antenna arrays using one-stage and two-stage substrate-integrated waveguide (SIW) phase shifters is proposed in this paper. The phase shifting capability of the SIW phase shifter is achieved by introducing movable metal posts placed in air slots at the input and output ports of the SIW. For illustration, the two antenna arrays are designed for a resonance frequency of 7.6 GHz using finite-element simulations. For each antenna array, the beam steering is achieved through adjusting the lateral positions of the metal posts in the air slots. Scanning over -8.30 degree to +8.30 degree and -13.80 degree to +13.80 degree is achieved with a steady gain for the one-stage and two-stage realizations, respectively.