A Low-Scattering Antenna Array at Both Normal and Grazing Incidence

Table 2

Comparison of the proposed array with the published low-RCS arrays.

Ref.	Incidence way	Element spacing	RCSR band (GHz)	In-band RCSR (dB)	Extrastructure
[17]	Normal	0.57λ0	10	10	No
[18]	Normal	0.5λ0	4-8	13	No
[19]	Normal	0.67λ0	4-8	9.5	No
[20]	Normal	0.6λ0	3-5; 6-10	0	No
[10]	Normal	0.5λ0	9-40	0	Yes
[11]	Normal	0.65λ0	4.5-13.5	8.5	Yes
Our work	Normal & Grazing	0.43λ0	3.3-8 &4.4-12.5	17.8	No