Dual-Polarized Probe for Planar Near-Field Measurement

Abstract

A dual-polarized probe enables the simultaneous sampling of two orthogonal polarizations which decreases the time for the characterization of co-and cross-polar properties of the antenna under test in transmission mode by 50%. In this work, a dual-polarized probe comprising of a square waveguide and grating polarizer based orthomode transducer is presented. The Ku-band dual-polarized probe is manufactured in-house using additive manufacturing and coated with conductive paint. The simulated and measured −10-dB impedance bandwidth is between 10.7-14.5 GHz. The peak simulated and measured coupling between the orthogonal polarizations is less than −60 dB and −40 dB, respectively.

Comparison of Additively Manufactured Dual-Polarized Probe Antennas at Ku-Band

“…The design and operationofthe coaxial-feddual-polarized probe antenna (DPP) based onthe square waveguide are detailedin [13].TheDPP consists of a gratingpolarizer-based orthomodetransducer(OMT)andan open-endedwaveguide (OEWG) asthe radiating element asshowninFig.1.The side length of the designedsquare OEWG is14.55mmfor…”

Dual-Band Antenna on 3D-Printed Substrate for 2.4/5.8 GHz ISM-Band Applications

“…Some of these parameters are filament selection, percent fill, print patterns, and the combination of some different filaments in only one block or device [7][8][9]. When the plastic blocks have been manufactured, the metallization process can be done using conductive thermoplastic filaments, conductive paint, or even using copper adhesive tape [10][11][12].…”