Print Email Facebook Twitter A X-Band Patch Antenna Array With Low Cross-Polarization Title A X-Band Patch Antenna Array With Low Cross-Polarization: For Weather Radar Applications Author Vizcarro Carretero, Marc (TU Delft Electrical Engineering, Mathematics and Computer Science) Contributor Yarovoy, Alexander (mentor) Turso, Stefano (mentor) Galvis Salzburg, Carlos (graduation committee) Bertuch, Thomas (graduation committee) Degree granting institution Delft University of Technology Programme Electrical Engineering Project WRAD (Weather Radar) Date 2019-08-26 Abstract 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 lower than 0.1 dB. A planar dual-polarized patch antenna array featuring low cross-polarization is proposed to meet these requirements via a simple implementation of imaged feeding and candidates as a cost-effective electronically steerable array for short-range X-band weather radars.However, relatively high levels of cross-polarization are to be expected in a patch array and therefore counteracted with specific designs. To this end, a feed rotation technique is implemented via bi-axial imaging of the feeding probes for each logical sub-array of 2 by 2 elements. Improvements in XPD respect to a repeated feeding scheme are significant and in excess of 30 dB. Based on successful designs and simulations in CST Microwave Studio and ANSYS HFSS, an X-band array of 4 by 4 patches has been manufactured. Extensive instrumental validation has been largely supporting this specialized feeding concept meeting the theoretical expectations and electromagnetic simulation results. Subject Weather RadarActive Electronically Steered ArrayLow cross-polarizationDual-polarization AntennaRadar Meteorologypolarimetry radarPatch AntennaMono-dimensonal ScanningFeed RotationCross-polar DiscriminationHigh Cross-polar IsolationPCB DesignX-Band Radar To reference this document use: http://resolver.tudelft.nl/uuid:4bf9b43f-4761-4fe1-808d-a490aaf63c48 Embargo date 2021-08-30 Bibliographical note www.linkedin.com/in/mvizcarro Part of collection Student theses Document type master thesis Rights © 2019 Marc Vizcarro Carretero Files PDF MSc_Thesis_Marc_Vizcarro_ ... _2019_.pdf 43.01 MB Close viewer /islandora/object/uuid:4bf9b43f-4761-4fe1-808d-a490aaf63c48/datastream/OBJ/view