표 1. | Table 1. 측정 결과 비교 | Measurement comparison.

Reference	Freq. (GHz)	Bandwidth (MHz) (fractional BW)	Tech.	Insertion loss (dB)	Phase imbalance (deg)	Isolation (dB)	Return loss (dB)	ZL (Ω)/ ZR (Ω)
[5]	5.4	970 (18 %)*	CMOS	5.0	0.86	21	18	50/ 50
[6]	2.4	500 (20.8 %)*	CMOS	4.0	0.8	22	33	50/ 50
[7]	5.2	400 (7.7 %)	GaAs	3.27	<1*	17*	18*	50/ 50
This work (N=3)[2]	5.5	1,520 (27.6 %)	GaAs	3.23	0.95	43	28	50/ 50
This work (N=4)	3.33	610 (18.3 %)	GaAs	3.37	2.74	32	21	50/ 75
This work (N=5) [3]	2.47	430 (17.4 %)	GaAs	3.39	0.8	25	34	50/ 100

Graphically estimated.