Synthesizing Sum and Difference Patterns with Low Complexity Feeding Network by Sharing Element Excitations

Table 2

Complexity of the feeding network for different cases.

Array patterns	Feeding network complexity
	Separate excitation without sharing, 0%		Sharing percentage, 20%		Sharing percentage, 50%		Sharing percentage, 80%
	Number of attenuators	Peak SLL (dB)	Number of attenuators	Peak SLL (dB)	Number of attenuators	Peak SLL (dB)	Number of attenuators	Peak SLL (dB)
Sum pattern	N	−24	N-N/4	−22	N-N/2	−16	N-3N/4	−15
Difference pattern	N	−24	N	−24	N	−24	N	−24
Total number of attenuators	2N	—	2N-N/4	—	2N-N/2	—	2N-3N/4	—