《A Dual-Polarized Series-Fed Microstrip Antenna Array with》.pdf

This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. A DualPolarized SeriesFed Microstrip Antenna Array with very High Polarization Purity for Weather Measurements Shaya Karimkashi, Member, IEEE, Guifu Zhang, Senior member, IEEE Abstract- The design and analysis of a dual-polarization frequency This paper presents the design and implementation of a dual scanning array antenna, operating in a frequency band of 2.7 – 3.0 polarized frequency scanning linear array antenna which meets GHz, for weather measurement applications are presented. Stacked the requirements for weather measurement applications. Isolation patch elements are coupled to feed lines through slots etched on the better than 40dB for the whole frequency band and cross ground plane. A wall of plated holes in the middle of the antenna polarization pattern less than 30dB on principle planes are column is designed to improve the isolation between the two input ports. Both simulation and measurements results confirm that very required. The linear array consists of aperture coupled microstrip high polarization purity is achieved. patch elements fed by serpent lines. A 1.53 m long 19element array to achieve 5 degrees of beamwidth is designed and Index Terms-antenna arrays, dual-polarized antennas, frequency fabricated.