Design of a Low Sidelobe Feed Network Based on the Louver-Shaped Defected Ground Structure

Table 1

Comparison of low sidelobe technologies.

Ref	Low sidelobe technology	The maximum value of the first sidelobe at center frequency
		Simulation design (dB)	Actual measured value after debugging (dB)
This work	Using the louver type DGS	−24.2	−28.1
[10]	Weighting the amplitude of the elements in the linear array in a series-parallel manner	−23	−19
[11]	Optimizing the coefficients of the aperture field distribution function by improving genetic algorithms (GA)	−40	—
[12]	Using taylor amplitude weighting	−24.1	—
[13]	The feeding network design adopts a tree topology structure	−25	—