Title:
FM TRANSMITTER
Document Type and Number:
Japanese Patent JP3253897
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate an expensive PLL synthesizer while an FMRF signal is made to freely transmittable in plural bands in order to secure the transmission of the FMRF signal in the band which is not overlapped on an FM broadcast in an FM transmitter.
SOLUTION: An audio signal is inputted and an FM signal is generated in VCO 12. An N-multiplier 16 and an (N+M) multiplier 18 respectively generate carrier waves with N-fold and (N+M)-fold frequencies against the oscillation frequency fr of a crystal osciallator 14. Mixers 20 and 22 respectively modulate the carrier waves from the N-multiplier 16 and the (N+M) multiplier 18 in amplitude by the FM signal from VOC 12 and the outputs are transmitted from a transmitting part 28.
Inventors:
Youichi Yamakage
Application Number:
JP16965797A
Publication Date:
February 04, 2002
Filing Date:
June 12, 1997
Export Citation:
Assignee:
Kenwood Corporation
International Classes:
H03C3/06; H04B1/034; H04B1/04; H04N5/40; (IPC1-7): H03C3/06; H04B1/034; H04B1/04; H04N5/40
Domestic Patent References:
| JP646343A | ||||
| JP9130699A |
Attorney, Agent or Firm:
Takashi Yamazaki