Title:
FM送信機、ならびにそれを用いた小型電子機器
Document Type and Number:
Japanese Patent JP4828993
Kind Code:
B2
Abstract:
The FM transmitter converts an input audio signal to a stereo composite signal, frequency-modulates the stereo composite signal and outputs the obtained signal. A stereo modulator stereo-modulates the output signal of the filter circuit, and converts the signal to the stereo composite signal. A frequency modulator frequency-modulates based on the stereo composite signal output from the stereo modulator. The filter circuit includes a pre-emphasis circuit, a low pass filter and the like, for example. At least one part of the filter circuit, that is, the low pass filter or the pre-emphasis circuit is configured with a switched capacitor filter.
Inventors:
Takeshi Sagara
Application Number:
JP2006108322A
Publication Date:
November 30, 2011
Filing Date:
April 11, 2006
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H04B1/04; H03H19/00
Domestic Patent References:
| JP2000228635A | ||||
| JP61039645A | ||||
| JP6338810A | ||||
| JP1027636A |
Attorney, Agent or Firm:
Sakaki Morishita