H-Plane-Scanning Multibeam Leaky-Wave Antenna for Wide-Angular-Range AoA Estimation at mm-wave
Julien Sarrazin, Guido Valerio
Abstract
A fully-metallic periodic leaky-wave antenna wellsuited for angle-of-arrival estimation with a reduced frequency bandwidth is presented. The design is based on a leaky rectangular waveguide loaded with corrugations and periodically modulated by longitudinal slots, which produces a frequency beam scanning in the H-plane. By exploiting multiple visible spatial harmonics, multiple beams are radiated for each frequency. This enables the antenna main beam to scan the 180°-angular range with a bandwidth of only 3.7% at 27 GHz. Simulations show that using a frequency-domain MUSIC approach, it is possible to estimate angles-of-arrival of several incoming sources without ambiguity.
Topics & Concepts
Leaky wave antennaOpticsBandwidth (computing)AcousticsHarmonicsPhysicsAntenna (radio)Microstrip antennaComputer scienceTelecommunicationsVoltageQuantum mechanicsAntenna Design and OptimizationMicrowave Engineering and WaveguidesDirection-of-Arrival Estimation Techniques