Nose-Cone Conformal Substrate-Integrated Waveguide Slot Array Antenna for X-Band Radar Applications

Table 3

Comparative analysis for planar, cylindrical, and nose-cone conformal SIW slot arrays (N = 6 and d = /2).

Parameters	Planar SIW	Cylindrical SIW [28]	Nose-cone SIW
1 SLL (dB)	−19.78	−21.72	−20.82
2 SLL (dB)	−17.85	−18.83	−27.63
SIW tilt (deg)	0°	0°	0.43°
Beam position (deg)	0°	0°	0°
HPBW (deg)	20.29°	21.24°	19.80°
Max. gain (dBi)	9.36	9.8	11.91