Full-Space Scanning Leaky-Wave Antenna Based on High-Permittivity Ceramic

A leaky wave antenna based on LTCC is presented. It appears suitable for computational imaging and other useful applications due to its full-space scanning characteristics, fast scan rate, and flat in-band peak gain. We use a phase reversal structure to provide an appropriate phase distribution, and add pairs of stubs on both sides of the transmission line to suppress open stopband at broadside. Simulation results show that the antenna can scan the full-space from the backfire to endfire in the frequency range of 3.4 - 5.3GHz, with a stable gain of around 8.82 dBi.