| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a stable variable phase signal highly accurately. <P>SOLUTION: A VOR transmission device of the invention comprises: a signal generator 10 for generating a CAR signal obtained through frequency modulation of a reference phase signal, an SB SIN signal having a first phase difference from the CAR signal and obtained through amplitude modulation of a variable phase signal, and an SB COS signal having a second phase difference from the reference phase signal and obtained through amplitude modulation of the variable phase signal; a CAR amplifier 20 for amplifying the CAR signal; an SB SIN amplifier 30 for amplifying the SB SIN signal; and an SB COS amplifier 40 for amplifying a second sideband wave. A part of output signals of each of the CAR amplifier, the SB SIN amplifier and the SB COS amplifier is fed back, and the output signals of the SB SIN amplifier and the SB COS amplifier are made to follow a part of the output signals of the CAR amplifier used as a reference signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
