Broadband Circularly Polarized Antennas with Compact Radiator Using Characteristic Mode Analysis

Table 3

Comparison between An1 and An2.

Prop. An.	Feeding mechanism	CPBW by CMA (GHz)	3 dB ARBW (GHz)	Max gain (dBic)	Min gain (dBic)
An1	Direct feed	4.3–7.1	4.7–7.7	4.0	2.4
An2	Inductive coupler	4.4–7.0	4.6–7.2	2.5	−0.4