표 4. | Table 4. J급 전력증폭기와 CFB 전력증폭기 효율 비교 | Efficiencycomparison between Class J and CFB power amplifier.

Items	Class J PA[9]	CFB PA
Freq. range	108~112 MHz
Pout	45 dBm
Modulation depth(90 Hz, 150 Hz)	20 % (−19.98 dBc)
IMD(@ mod. signal ref.)	−38 dBc max.	−43.95 dBc
PAE	24.38 %	40.12 %
Improvement of PAE	15.74 %