GB2313000B - Frequency modulation using a phase-locked loop - Google Patents
Frequency modulation using a phase-locked loopInfo
- Publication number
- GB2313000B GB2313000B GB9609465A GB9609465A GB2313000B GB 2313000 B GB2313000 B GB 2313000B GB 9609465 A GB9609465 A GB 9609465A GB 9609465 A GB9609465 A GB 9609465A GB 2313000 B GB2313000 B GB 2313000B
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- locked loop
- frequency modulation
- modulation
- locked
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9609465A GB2313000B (en) | 1996-05-07 | 1996-05-07 | Frequency modulation using a phase-locked loop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9609465A GB2313000B (en) | 1996-05-07 | 1996-05-07 | Frequency modulation using a phase-locked loop |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9609465D0 GB9609465D0 (en) | 1996-07-10 |
GB2313000A GB2313000A (en) | 1997-11-12 |
GB2313000B true GB2313000B (en) | 2000-10-25 |
Family
ID=10793277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9609465A Expired - Fee Related GB2313000B (en) | 1996-05-07 | 1996-05-07 | Frequency modulation using a phase-locked loop |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2313000B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19920307A1 (en) * | 1999-05-03 | 2000-11-16 | St Microelectronics Gmbh | Electrical circuit for controlling a load |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983004148A1 (en) * | 1982-05-14 | 1983-11-24 | Motorola, Inc. | Pulse adding and subtracting circuit controlled by digital data |
GB2160037A (en) * | 1984-05-25 | 1985-12-11 | Multitone Electronics Plc | Phase locked loop circuits |
EP0209754A2 (en) * | 1985-07-15 | 1987-01-28 | Motorola, Inc. | Two-part synthesizer modulation system using a reference phase modulator |
US5130676A (en) * | 1991-09-06 | 1992-07-14 | Motorola, Inc. | Phase locked loop frequency synthesizer with DC data modulation capability |
-
1996
- 1996-05-07 GB GB9609465A patent/GB2313000B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983004148A1 (en) * | 1982-05-14 | 1983-11-24 | Motorola, Inc. | Pulse adding and subtracting circuit controlled by digital data |
GB2160037A (en) * | 1984-05-25 | 1985-12-11 | Multitone Electronics Plc | Phase locked loop circuits |
EP0209754A2 (en) * | 1985-07-15 | 1987-01-28 | Motorola, Inc. | Two-part synthesizer modulation system using a reference phase modulator |
US5130676A (en) * | 1991-09-06 | 1992-07-14 | Motorola, Inc. | Phase locked loop frequency synthesizer with DC data modulation capability |
Also Published As
Publication number | Publication date |
---|---|
GB2313000A (en) | 1997-11-12 |
GB9609465D0 (en) | 1996-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20050507 |