Design of Arbitrarily Shaped Planar Microstrip Antenna Arrays with Improved Efficiency

Table 1

Computed results of the subarrays.

Design	Gain (dBi)	S.L.L (dB)	Cross-Pol. (dB)	Loss with feed line (dB)	Aperture eff.	𝜂eff
Regular design	19.30	≤−13.4	≤−45	~−0.69	74%	63.1%
Array 1	19.90	≤−13.3	≤−38	~−0.70	85.4%	72.7%
Array 2	20.05	≤−13.4	≤−38	~−0.70	88.4%	75.3%
Array 3	19.80	≤−13.3	≤−39	~−0.70	83.5%	71.2%
Array 4	20.05	≤−13.4	≤−43	~−0.71	88.8%	75.4%
Array 5	19.90	≤−13.5	≤−38	~−0.70	85.5%	72.7%
Array 6	19.75	≤−13.6	≤−42	~−0.72	83.0%	70.8%
Array 7	19.85	≤−13.3	≤−38	~−0.71	84.9%	71.9%
Array 8	19.95	≤−13.5	≤−39	~−0.72	86.8%	73.6%