Fig. 19
From: Design and validation of A 30 ghz 8 × 8 slot antenna array with ridge waveguide pins/holes layers

Manufactured prototype of the 8 × 8 slot array antenna with pins/holes.
From: Design and validation of A 30 ghz 8 × 8 slot antenna array with ridge waveguide pins/holes layers
Manufactured prototype of the 8 × 8 slot array antenna with pins/holes.