TWI376101B - - Google Patents
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- Publication number
- TWI376101B TWI376101B TW097135332A TW97135332A TWI376101B TW I376101 B TWI376101 B TW I376101B TW 097135332 A TW097135332 A TW 097135332A TW 97135332 A TW97135332 A TW 97135332A TW I376101 B TWI376101 B TW I376101B
- Authority
- TW
- Taiwan
- Prior art keywords
- frequency
- capacitor
- charge pump
- signal
- current
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 91
- 238000013016 damping Methods 0.000 claims description 34
- 230000002194 synthesizing effect Effects 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 238000003786 synthesis reaction Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 2
- 101000894525 Homo sapiens Transforming growth factor-beta-induced protein ig-h3 Proteins 0.000 claims 5
- 102100021398 Transforming growth factor-beta-induced protein ig-h3 Human genes 0.000 claims 5
- 210000000952 spleen Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 23
- 238000013461 design Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 101150109657 ureF gene Proteins 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
-
- 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
-
- 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
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/04—Modifications for maintaining constant the phase-locked loop damping factor when other loop parameters change
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097135332A TW201012074A (en) | 2008-09-15 | 2008-09-15 | Frequency synthesis system with self-calibrated loop stability and bandwidth |
| US12/457,354 US8509369B2 (en) | 2008-09-15 | 2009-06-09 | Frequency synthesis system with self-calibrated loop stability and bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097135332A TW201012074A (en) | 2008-09-15 | 2008-09-15 | Frequency synthesis system with self-calibrated loop stability and bandwidth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201012074A TW201012074A (en) | 2010-03-16 |
| TWI376101B true TWI376101B (https=) | 2012-11-01 |
Family
ID=42007191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW097135332A TW201012074A (en) | 2008-09-15 | 2008-09-15 | Frequency synthesis system with self-calibrated loop stability and bandwidth |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8509369B2 (https=) |
| TW (1) | TW201012074A (https=) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8179174B2 (en) * | 2010-06-15 | 2012-05-15 | Mstar Semiconductor, Inc. | Fast phase locking system for automatically calibrated fractional-N PLL |
| TWI451095B (zh) | 2012-12-10 | 2014-09-01 | Ind Tech Res Inst | 電流偵測電路及其方法 |
| TWI528725B (zh) | 2013-05-06 | 2016-04-01 | 國立中山大學 | 寬頻頻率合成器及其頻率合成方法 |
| US9696359B2 (en) * | 2014-12-31 | 2017-07-04 | Texas Instruments Incorporated | Dynamic measurement of frequency synthesizer noise spurs or phase noise |
| CN113595548B (zh) * | 2021-06-24 | 2023-11-03 | 北京邮电大学 | 自适应调节带宽的锁相装置及系统 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965531A (en) | 1989-11-22 | 1990-10-23 | Carleton University | Frequency synthesizers having dividing ratio controlled by sigma-delta modulator |
| JPH11196431A (ja) * | 1997-12-26 | 1999-07-21 | Fujitsu General Ltd | ２重ループｐｌｌ回路及びこのｐｌｌ回路を用いた色復調回路 |
| US6583675B2 (en) | 2001-03-20 | 2003-06-24 | Broadcom Corporation | Apparatus and method for phase lock loop gain control using unit current sources |
| US7420427B2 (en) * | 2005-03-28 | 2008-09-02 | Texas Instruments Incorporated | Phase-locked loop with a digital calibration loop and an analog calibration loop |
| US7405630B2 (en) * | 2005-09-30 | 2008-07-29 | Broadcom Corporation | Frequency synthesizer with improved spurious performance |
-
2008
- 2008-09-15 TW TW097135332A patent/TW201012074A/zh unknown
-
2009
- 2009-06-09 US US12/457,354 patent/US8509369B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW201012074A (en) | 2010-03-16 |
| US8509369B2 (en) | 2013-08-13 |
| US20100067612A1 (en) | 2010-03-18 |
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