CA2238093A1 - Direct digital frequency synthesizer using pulse gap shifting technique - Google Patents
Direct digital frequency synthesizer using pulse gap shifting techniqueInfo
- Publication number
- CA2238093A1 CA2238093A1 CA 2238093 CA2238093A CA2238093A1 CA 2238093 A1 CA2238093 A1 CA 2238093A1 CA 2238093 CA2238093 CA 2238093 CA 2238093 A CA2238093 A CA 2238093A CA 2238093 A1 CA2238093 A1 CA 2238093A1
- Authority
- CA
- Canada
- Prior art keywords
- clock signal
- frequency synthesizer
- direct digital
- digital frequency
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
- G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/025—Digital function generators for functions having two-valued amplitude, e.g. Walsh functions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
- H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
- H03B21/02—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Computing Systems (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
A direct digital frequency synthesizer includes inputs for a reference clock signal and a control word, and an output for a synthesized clock signal. A phase accumulator coupled to the input for the control word and the reference clock signal has an output for a phase control signal. A phase shifter has inputs for the reference clock signal and the phase control signal and an output coupled to the output for the synthesized clock signal. The control word can be used to adjust the output frequency and phase of the synthesized clock signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2238093 CA2238093C (en) | 1997-05-29 | 1998-05-20 | Direct digital frequency synthesizer using pulse gap shifting technique |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2,206,465 | 1997-05-29 | ||
CA 2206465 CA2206465A1 (en) | 1997-05-29 | 1997-05-29 | Direct digital frequency synthesizer using pulse gap shifting technique |
CA 2238093 CA2238093C (en) | 1997-05-29 | 1998-05-20 | Direct digital frequency synthesizer using pulse gap shifting technique |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2238093A1 true CA2238093A1 (en) | 1998-11-29 |
CA2238093C CA2238093C (en) | 2003-04-08 |
Family
ID=25679386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2238093 Expired - Fee Related CA2238093C (en) | 1997-05-29 | 1998-05-20 | Direct digital frequency synthesizer using pulse gap shifting technique |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2238093C (en) |
-
1998
- 1998-05-20 CA CA 2238093 patent/CA2238093C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2238093C (en) | 2003-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |