Agenda
Master thesis defence
- Friday, 30 August 2019
- 10:00-12:00
- HB 13.100
A X-Band Patch Antenna Array with Low Cross-pol for Weather Radar Applications
Vizcarro, Marc
Meaningful dual-polarized radar estimations suitable for radar meteorology require a cross-polarization discrimination (XPD) and isolation (XPI) in excess of 30 dB to reach a differential reflectivity accuracy of 0.1 dB. A planar dual-polarized patch antenna array featuring low cross-polarization is presented meeting this requirement via a simple implementation of imaged feeding and candidates as a cost-effective active electronically steerable array (AESA) for short-range X-band weather radars. In this M.Sc. Thesis a 4x4 sub-array tile has been conceived, designed, manufactured and validated. Using a feed rotation technique and carefully designing a feeding network, high isolation and low cross-polarization suppression are achieved up to scanning in elevation. Through this initial prototype, a low-cost AESA concept has been demonstrated, a crucial step that will enable further advancements leading to the final array design for Weather Radar applications at Fraunhofer FHR.
