Analysis and uniform design of a single-layer slotted waveguide array antenna with baffles

The alternating-phase feed single-layer slotted waveguide arrays with baffles are analyzed by the S2DS method. The unit model of two slots is considered in order to determine the initial parameters for the S2DS array analysis. The measured reflection and gain of the antenna designed by the S2DS method have good agreements with the simulated results by HFSS over a wide frequency band. The reflection of the model antenna is below -15 dB over 1.3 GHz. The directivity is 32.7 dB at the center frequency of 25.3 GHz.