. . . . . . dc ac. ( ac .) ac . ac 01 mhz. . . . VCO . DC VCO ( )FM ( )PM ( )PWM .

VCO1

LC . .

( )VCXO ( ) . . ( )VFOs . ( )VCO .

VCO VCO :

()PLL

RF2

RF . AM FM . : . . . . . AM AM . . . DC . . . : - . - . . . 3

. ( x)g . . AM FM . FSK frequency shift keying

FSK PLC indoor PLC . FSK FSK . FSK . frequncy shift keying . : FSK fsk . 4

. FSK FSK . FSK . FSK . . . . . . FSK .

FSK5

PLC PLC FSK FSK . FSK : UCL FSK . ASK PSK ASK PSK . FSK ( ) . . : 62 31 Ic Rf Cpu 4 . . . .6

Rf Cpu Cpu 31 Rf 62 13mhz . 26mhz Rf . Rf 2 31 Cpu . Ic Rf .

:

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