Fig. 2
From: A dual-band high-gain beam steering antenna array for 5G sub-6 GHz base station

Photograph of prototype of antenna element (a) with network analyzer (b) in anechoic chamber.
From: A dual-band high-gain beam steering antenna array for 5G sub-6 GHz base station

Photograph of prototype of antenna element (a) with network analyzer (b) in anechoic chamber.