Title:
METHOD AND APPARATUS FOR FREQUENCY-MODULATION CONTROL OF AN OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2011/091261
Kind Code:
A3
Abstract:
An electronic device controlling a frequency modulation index has a frequency modulation index control loop (14) having an input (22) adapted to be connected to a frequency output (18) of a frequency controllable oscillator (16). The oscillator (16) has a center frequency (Fc) and an output (34) of the control loop (14) is adapted to be connected to an input (36) of a frequency-modulation unit (38), the control loop (14) being adapted to determine the modulation index. Further provided is a method of frequency-modulating with a modulation frequency (Fm) a controllable oscillator (16) having a center frequency (Fc) with a constant frequency modulation index.
Inventors:
GIBSON NEIL (DE)
COULEUR MICHAEL (DE)
COULEUR MICHAEL (DE)
Application Number:
PCT/US2011/022069
Publication Date:
November 17, 2011
Filing Date:
January 21, 2011
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTR DEUTSHLAND GMBH (DE)
TEXAS INTRUMENTS JAPAN LTD (JP)
GIBSON NEIL (DE)
COULEUR MICHAEL (DE)
TEXAS INSTR DEUTSHLAND GMBH (DE)
TEXAS INTRUMENTS JAPAN LTD (JP)
GIBSON NEIL (DE)
COULEUR MICHAEL (DE)
International Classes:
H03K7/06
Foreign References:
| US20090322299A1 | 2009-12-31 | |||
| KR20000056675A | 2000-09-15 | |||
| US20090224684A1 | 2009-09-10 | |||
| JPH01277371A | 1989-11-07 |
Attorney, Agent or Firm:
FRANZ, Warren, L et al. (Deputy General Patent CounselP.O. Box 655474, Mail Station 399, Dallas TX, US)
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