TW271517B - - Google Patents
Info
- Publication number
- TW271517B TW271517B TW083110047A TW83110047A TW271517B TW 271517 B TW271517 B TW 271517B TW 083110047 A TW083110047 A TW 083110047A TW 83110047 A TW83110047 A TW 83110047A TW 271517 B TW271517 B TW 271517B
- Authority
- TW
- Taiwan
Links
Classifications
-
- 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
- H03L7/0898—Details of the current generators the source or sink current values being variable
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- 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
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1072—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the charge pump, e.g. changing the gain
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- 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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/193—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number the frequency divider/counter comprising a commutable pre-divider, e.g. a two modulus divider
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13471093A | 1993-10-12 | 1993-10-12 | |
| PCT/US1994/011543 WO1995010880A1 (en) | 1993-10-12 | 1994-10-12 | Adaptive bandwidth controlled frequency synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW271517B true TW271517B (en) | 1996-03-01 |
Family
ID=22464617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW083110047A TW271517B (en) | 1993-10-12 | 1994-11-01 |
Country Status (2)
| Country | Link |
|---|---|
| TW (1) | TW271517B (en) |
| WO (1) | WO1995010880A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2845185B2 (en) * | 1995-11-29 | 1999-01-13 | 日本電気株式会社 | PLL circuit |
| JP3338748B2 (en) * | 1996-01-30 | 2002-10-28 | 日本電気株式会社 | PLL frequency synthesizer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023116A (en) * | 1976-07-08 | 1977-05-10 | Fairchild Camera And Instrument Corporation | Phase-locked loop frequency synthesizer |
| US5125107A (en) * | 1989-03-02 | 1992-06-23 | Motorola, Inc. | Diagnostic mode for a frequency synthesizer |
| US4926141A (en) * | 1989-05-01 | 1990-05-15 | Motorola, Inc. | Frequency synthesizer with improved automatic control of loop bandwidth selection |
| US5276716A (en) * | 1990-02-15 | 1994-01-04 | Advanced Micro Devices Inc. | Bi-phase decoder phase-lock loop in CMOS |
| US5187722A (en) * | 1990-08-13 | 1993-02-16 | At&T Bell Laboratories | Frequency synthesis using fractional frequency multiplication |
| US5222079A (en) * | 1990-10-25 | 1993-06-22 | Motorola, Inc. | Adaptive information signal receiver |
| US5151665A (en) * | 1991-02-07 | 1992-09-29 | Uniden America Corporation | Phase-lock-loop system with variable bandwidth and charge pump parameters |
| US5260979A (en) * | 1991-05-28 | 1993-11-09 | Codex Corp. | Circuit and method of switching between redundant clocks for a phase lock loop |
| US5339050A (en) * | 1993-04-27 | 1994-08-16 | National Semiconductor Corp. | Frequency synthesizing phase lock loop with unvarying loop parameters |
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1994
- 1994-10-12 WO PCT/US1994/011543 patent/WO1995010880A1/en active Application Filing
- 1994-11-01 TW TW083110047A patent/TW271517B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995010880A1 (en) | 1995-04-20 |