Table 2 Performance comparison of the presented waveguide arrays

[67]

35

200

31.5

N/A

GWG

[68]

28

N/A

23.68

N/A

GGWG

[69]

28.6

4\(\times\)9

24.8

−11.5

GGWG

[70]

28

4\(\times\)4

19.6

−13

GGWG

[71]

25.3

20\(\times\)16

30.5

−14.7

RWG

[72]

31.5

8\(\times\)8

18.74

−11.02

SIW

This work

39

18+19

19.8

−13.3

Waveguide antenna with

quarter-wavelength pins