Trifrequency Reconfigurable Linear Irregular Array with Beam Deflection Capability in X/Ku/Ka-Bands

Table 2

Comparison of the FRAA with other multiband/switchable-band antenna arrays.

Item	Our work	Ref. [14]	Ref. [16]	Ref. [19]	Ref. [18]
Reconstruction band	X/Ku/Ka	X/Ku/Ka	L/S	L/C	X/Ku (multiband)
Frequency ratio	3.57 : 1	3.12 : 1	2.2 : 1	3.2 : 1	1.8 : 1
Number of element switches	2	4	4	16	0
Scanning range	20°	0°	±60°	±60°	50°
Is the amplitude weighted	No	No	No	Not mentioned	No
Sidelobe level simulation result (dB)	−15.7@20°	Not mentioned	Around −12.5@15°	Around −12.0@0°	−14.0 (synthetic)
Element size (λL)	0.14 × 0.35	0.14 × 0.13	0.22 × 0.22	0.18 × 0.18	0.33 × 0.33
Element spacing (λL/λH)	Irregular	0.4/1.27	0.5/0.5	0.36/<0.5	0.33/0.58