Title:
RADIO RECEIVER
Document Type and Number:
Japanese Patent JP3244342
Kind Code:
B2
Abstract:
PURPOSE: To provide a radio receiver capable of reducing reception disturbance caused by the unwanted radiation of higher harmonic of a clock signal.
CONSTITUTION: A clock oscillation means 26 which outputs the clock signal supplied to an integrated circuit 24 contains a variable capacitance diode 28, and modulates the clock signal by a signal for modulation from an oscillator 30 for modulation. Also, a shift circuit 34 provided with a switching function is connected to the clock oscillation means 26 via a capacitor 32, and the frequency of the clock signal can be changed by the operation of the shift circuit 34. Furthermore, a detecting means 36 discriminates whether or not the signal for modulation is included in a reception demodulation signal, and when the fact that the signal for modulation is included is detected, the frequency of the clock signal is changed by controlling the shift circuit 34.
Inventors:
Noboru Harumoto
Application Number:
JP14851893A
Publication Date:
January 07, 2002
Filing Date:
May 27, 1993
Export Citation:
Assignee:
Icom Co., Ltd.
International Classes:
H04B1/10; H04L7/02; (IPC1-7): H04B1/10; H04L7/02
Domestic Patent References:
| JP62272629A | ||||
| JP563592A |
Attorney, Agent or Firm:
Tetsuo Moriyama