A Single-Layer S/X- Band Shared Aperture Antenna with MIMO Characteristics at X-Band for Airborne Synthetic Aperture Radar Applications

Table 1

Dimensions of the antenna design prototype of coaxial antenna.

Coaxial antenna parameters
Parameters	Description	Value (mm)
HG	Height of the ground	0.035
HS	Height of the substrate	1.6
SPL	Patch length	21
SPW	Patch width	21
SL	Substrate length	100
SW	Substrate width	100
R1	Inner pin	0.65
R2	Outer pin	2.1765
XVF	X-coordinate of vertical polarization	0
YVF	Y-coordinate of vertical polarization	−4.5
XHF	X-coordinate of horizontal polarization	4.5
YHF	Y-coordinate of horizontal polarization	0