A 3D Printed Ka-Band High-Efficiency Wide-Slit Antenna Array for High-Power Microwave Applications

Table 1

Comparison with previously reported Ka-band antenna arrays.

	This work	[17]	[18]	[19]
Frequency (GHz)	30.8	31.5	37.5	37.5
Elements number	2 × 8	8 × 8	4 × 4	8 × 8
Size (mm)	3λ × 12λ	99 × 138	3.8λ × 3.8λ	6.4λ × 6.4λ
Measured gain (dB)	25.8	18.74	17.8	24
Efficiency	82.9%	—	74.9%	41.7%