Miniaturized OTA Chamber Design Compatible with 5G Medium and Low Frequency Band and Millimeter Wave Band

The over the air (OTA) testing chambers for 5G base station require significant investment both in terms of space occupation and construction cost. If the in-band OTA testing requirements of 5G medium and low frequency bands and 5G millimeter wave bands are taken into account, an ultra-wide frequency range of 1.7 GHz ~71.0 GHz needs to be supported. For general far-field and compact antenna test range, both the space and cost increase dramatically. In this paper, a miniaturized OTA chamber with relatively low requirements for floor space, chamber height as well as ground load-bearing is designed, which is compatible with the ultra-wide frequency range of 5G medium and low frequency bands and millimeter wave bands, and achieves good quiet zone performance.