GB2278747B - Improvements in or relating to frequency/phase comparators - Google Patents
Improvements in or relating to frequency/phase comparatorsInfo
- Publication number
- GB2278747B GB2278747B GB9310208A GB9310208A GB2278747B GB 2278747 B GB2278747 B GB 2278747B GB 9310208 A GB9310208 A GB 9310208A GB 9310208 A GB9310208 A GB 9310208A GB 2278747 B GB2278747 B GB 2278747B
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- frequency
- phase comparators
- comparators
- phase
- 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
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
- H03K5/26—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being duration, interval, position, frequency, or sequence
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
- H03L7/0895—Details of the current generators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/113—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using frequency discriminator
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9310208A GB2278747B (en) | 1993-05-18 | 1993-05-18 | Improvements in or relating to frequency/phase comparators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9310208A GB2278747B (en) | 1993-05-18 | 1993-05-18 | Improvements in or relating to frequency/phase comparators |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9310208D0 GB9310208D0 (en) | 1993-06-30 |
GB2278747A GB2278747A (en) | 1994-12-07 |
GB2278747B true GB2278747B (en) | 1997-12-03 |
Family
ID=10735678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9310208A Expired - Fee Related GB2278747B (en) | 1993-05-18 | 1993-05-18 | Improvements in or relating to frequency/phase comparators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2278747B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647983A1 (en) * | 1995-12-04 | 1997-06-05 | Papst Motoren Gmbh & Co Kg | Physical variable control method and device e.g. for electronically commutated electric motor |
US5838180A (en) * | 1996-09-12 | 1998-11-17 | Lucent Technologies Inc. | Low-voltage frequency synthesizer |
NL1015386C2 (en) * | 2000-06-06 | 2001-12-28 | Ericsson Telefon Ab L M | Phase lock circuit. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122404A (en) * | 1978-01-23 | 1978-10-24 | Rockwell International Corporation | Combination phase detector voltage doubler and low-pass filter for use on a phase-lock loop |
US4598217A (en) * | 1984-03-19 | 1986-07-01 | Itt Corporation | High speed phase/frequency detector |
GB2257316A (en) * | 1991-06-25 | 1993-01-06 | Ferranti Int Plc | Phase-locked loop oscillator |
-
1993
- 1993-05-18 GB GB9310208A patent/GB2278747B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122404A (en) * | 1978-01-23 | 1978-10-24 | Rockwell International Corporation | Combination phase detector voltage doubler and low-pass filter for use on a phase-lock loop |
US4598217A (en) * | 1984-03-19 | 1986-07-01 | Itt Corporation | High speed phase/frequency detector |
GB2257316A (en) * | 1991-06-25 | 1993-01-06 | Ferranti Int Plc | Phase-locked loop oscillator |
Also Published As
Publication number | Publication date |
---|---|
GB2278747A (en) | 1994-12-07 |
GB9310208D0 (en) | 1993-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20010518 |