Fig. 3
From: An All-Metal Broadband Low SLL slot array antenna for use in 5G Sub-6 GHz networks

(a) Geometry of radiation slot array. (b) Configuration of cavity layer.
From: An All-Metal Broadband Low SLL slot array antenna for use in 5G Sub-6 GHz networks

(a) Geometry of radiation slot array. (b) Configuration of cavity layer.