A Cross-Joint Vivaldi Antenna Pair for Dual-Pol and Broadband Testing Capabilities

The non-standalone 5G antenna wireless communication standard and devices operating under Wi-Fi 5, 6, 6E operate at the 3 GHz frequency bands above. With increasing demand for these technologies, it is crucial to test them rapidly economically commercial usage. This paper presents a dual-polarized Vivaldi over-the-air (OTA) measurement of used in 3–7 band. dual-polarization performance realized by vertically intersecting two planar antennas soldering back end. A three-step 1/4 wavelength balun applied input wideband impedance matching antenna, which attached Teflon holder easy mounting. It has excellent designed be manufactured low cost. fabricated was tested an anechoic chamber showed S11 less than -10 dB from 2.63–7.15 GH, gain more 5 dBi measured half-power beam width 60° with symmetric E/H-plane. Much required symmetry achieved holder. cross-polarization discrimination better 15 across entire bandwidth.