The Modeling of Space-to-frequency Mapping Leaky-wave Antenna Array with Controllable Radiation Elements

A novel approach for realizing space-to-frequency mapping based on the leaky-wave antenna (LWA) array with controllable radiation elements is proposed in this paper. Different from traditional methods, the proposed LWA including microstrip transmission line and microstrip stub radiation elements which connected through an individually enabled or disabled PIN diode realizes low-cost and high-speed beam steering antenna array without extra phase shifters or attenuators. The simulation results of the proposed model show that the far-field radiation pattern in the working frequency range have an agreement with expectations (realized in the direction of traveling wave transmission and at an angle of 45 degrees, respectively) and the space-to-frequency mapping characteristic is good. The findings provide valuable input to the ongoing revision and updating of relevant space-to-frequency mapping approaches.