Fractional-N digital modulation with analog IQ interface

摘要: Digital I and Q (NRZ) data streams are generated by specially configured conversion circuits, the outputs of which applied to a F-N synthesizer modulate synthesizer. All illustrative circuit employs system comparators detect state analog signals at each bit interval decode such determine NRZ sequence that gave rise detected states. Once so determined, these an in same manner as signals. Advantageously, inputs present inventive embodiments may be received either or digital inputs, subject selection between input modes using only single binary input.