Oscillator and communication apparatus

Details Oscillator and communication apparatus Oscillator and communication apparatus

2005-04-19

2005-04-19

Vo, Nguyen T. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S265000, C331S176000, C331S17700V

Reexamination Certificate

active

06882835

ABSTRACT:
An oscillator10includes temperature compensation circuits30and40, a frequency adjusting circuit50, and an initial deviation correcting circuit60. Switches SW1to4are controlled based on control data DC stored in a memory90so that a temperature compensation voltage V1, a temperature compensation voltage V2, a frequency adjusting voltage V3, and an initial deviation correcting voltage V4, output from the above circuits, are selectively added, supplying a sum to a voltage-controlled oscillation circuit20as a control voltage VA.

REFERENCES:
patent: 4521119 (1985-06-01), Stepke et al.
patent: 5004988 (1991-04-01), Ueno et al.
patent: 5805028 (1998-09-01), Kato
patent: 5883550 (1999-03-01), Watanabe et al.
patent: 6362699 (2002-03-01), Fry
patent: 6366175 (2002-04-01), Oka
patent: 48-25463 (1973-07-01), None
patent: 60-82845 (1985-05-01), None
patent: 2001-230630 (2001-08-01), None

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