Circularly Polarized Microstrip Yagi Array Antenna with Wide Beamwidth and High Front-to-Back Ratio

Table 4

Comparison of the antennas performances.

Ant.	(GHz)	CP or LP	Bandwidth		α (°)	(dB)	(dB)	HPBW (°)
			VSWR ≤ 1.5	AR ≤ −3 dB				-plane	-plane
Our design	5.6	CP	11.3%	11.7%	35	19	4.3	60	87
Reference [7]	1.55	CP	—	—	40	4	13.5	60	—
Reference [10]	5.2	LP	10%	×	40	15	10	38	75