Design of Wide-Band 2-D Holographic Antenna Using Wedge Reflector

In this paper, the effect of forward and backward radiation modes in 2-D holographic leaky wave antennas are described. The suppression of backward radiation mode is proposed to prevent the destructive effect of the excitation of the forward and backward radiation modes at frequencies that are lower than the designed operating frequency. Wedge reflector is placed next to the launcher in order to improve the radiation characteristics of the antenna. The presence of the wedge reflector changes the distribution form of the reference wave. The antenna is designed to operate over 13-18 GHz frequency band and a bandwidth of 32% is obtained.