| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication device which can eliminate line spectrum in a signal.SOLUTION: The communication device includes: a conversion unit (503) which converts a data signal from a nonreturn-to-zero signal to a return-to-zero signal; a trigger flip-flop (504) which inverts an output signal each time the return-to-zero signal makes one cycle of change; and a first filter (506) which, by removing low frequency components from the output signal of the trigger flip-flop, alternately outputs a positive polarity pulse and a negative polarity pulse corresponding to the value of the data signal. |
