Title:
受信機および複合部品
Document Type and Number:
Japanese Patent JP4113838
Kind Code:
B2
Abstract:
A receiver and a composite component for preventing noise produced by sneaking of a local oscillation signal. An FM receiver comprises a high-frequency amplifier circuit 11 , a mixing circuit 12 , a local oscillator 13 , intermediate-frequency filters 14 and 16 , an intermediate-frequency amplifier circuit 15 , a limit circuit 17 , an FM detection circuit 18 , and a stereo demodulation circuit 19 . The mixing circuit 12 and the local oscillator 13 constitute a one-chip composite component 30 integrally formed on a semiconductor substrate. The frequency of the local oscillation signal is set so that the difference of frequency between the local oscillation signal and a modulated wave signal may be smaller than the occupied bandwidth of the modulated wave signal.
Inventors:
Hiroshi Miyagi
Application Number:
JP2003507970A
Publication Date:
July 09, 2008
Filing Date:
June 24, 2002
Export Citation:
Assignee:
新潟精密株式会社
株式会社リコー
株式会社リコー
International Classes:
H04B1/26; H04B1/30; H04B15/06; H04B1/16
Domestic Patent References:
| JP2000332629A | ||||
| JP2000082779A | ||||
| JP7245568A | ||||
| JP6291556A | ||||
| JP2002057294A |
Attorney, Agent or Firm:
Masahiko Amagai