JP2007124699A - 位相同期ループ回路 - Google Patents
位相同期ループ回路 Download PDFInfo
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- JP2007124699A JP2007124699A JP2007000047A JP2007000047A JP2007124699A JP 2007124699 A JP2007124699 A JP 2007124699A JP 2007000047 A JP2007000047 A JP 2007000047A JP 2007000047 A JP2007000047 A JP 2007000047A JP 2007124699 A JP2007124699 A JP 2007124699A
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- locked loop
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- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- H03L7/16—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
- 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
-
- 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
-
- 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
- H03L7/197—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/199—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
【解決手段】第一および第二レジスタへ接続された第一および第二計数手段10,14を含む位相同期ループ回路が開示される。第一レジスタ18は数Mを第二レジスタ20は数Nを記憶する。第一計数手段は基準信号FrefのMサイクルに応答してF1出力信号を出力し、第二計数手段は出力信号FoutのNサイクルに応答してF2出力信号を出力する。F1,F2,Fref,Fout 信号は、位相検出器30へ接続され、FrefとFoutの位相が比較される。位相検出回路の出力信号は位相検出回路出力信号に比例したFout信号を発生する電圧制御発振器12に接続される。Fout信号は位相同期ループ回路が整定するまで第二レジスタへフィードバックされる。
【選択図】図1
Description
12 電圧制御発振器
14 カウンタ
16 位相検出器
18 Mレジスタ
20 Nレジスタ
22 フィルタ
24 入力端子
26 チャージポンプ
30 位相検出器
36 P,P+1レジスタ
38 カウンタ
Claims (10)
- 位相同期ループ回路であって、
予め設定された第一および第二の数を記憶するための記憶手段と、
基準信号の前記予め設定された第一の数のサイクルを実質的に計数することに応答して第一の信号を提供するためと、出力信号の前記予め設定された第二の数のサイクルを実質的に計数することに応答して第二の信号を更に提供するために前記記憶手段に接続された計数手段と、
前記計数手段の前記第一および第二の信号と、前記基準信号および前記出力信号とが接続される位相検出手段と、前記基準信号は、前記計数手段の前記第一の信号により制御され、前記出力信号は、前記計数手段の前記第二の信号により制御され、従って、前記基準信号および前記出力信号の間の論理状態に於ける位相差信号が提供され、
前記論理状態位相差信号に比例した周波数を有する前記出力信号を提供するために、前記位相検出手段と前記計数手段とを接続するループ手段を含むことを特徴とする位相同期ループ回路。 - 前記位相差信号が位相差を示さなくなるまで、前記計数手段は、前記出力信号に応答して前記第二の信号を変化させることを特徴とする請求項1記載の位相同期ループ回路。
- 前記記憶手段は、第一の数値Mを記憶するための第一の記憶手段と第二の数値Nを記憶するための第二記憶手段とを含み、
前記計数手段は、前記第一記憶手段へ接続され、入力基準信号Frefに応答する第一カウンタ手段と、前記第二記憶手段に接続され、出力信号Foutに応答する第二カウンタとを含み、
前記第一カウンタ手段は、前記基準信号FrefのMサイクルに応答して、出力信号F1を提供し、
前記第二カウンタ手段は、前記出力信号FoutのNサイクルに応答して、出力信号F2を提供し、
前記位相検出手段は、前記第一および第二カウンタ手段に接続され、前記出力信号F1、前記基準信号Fref、前記出力信号F2および前記出力信号Foutに応答し、前記基準信号Frefおよび前記出力信号Foutの位相は、前記出力信号F1およびF2により制御される時間だけ比較され、前記基準信号Frefおよび前記出力信号Foutの立ち上がりおよび立ち下がりに於ける差に応答した位相検出出力信号PDoutが得られることを特徴とする請求項1記載の位相同期ループ回路。 - 前記位相検出出力信号PDoutに比例した周波数を有する前記出力信号Foutを提供するための、前記位相検出手段へ接続された電圧制御発振器手段を更に含むことを特徴とする請求項3記載の位相同期ループ回路。
- 前記位相検出手段は、前記出力信号F1により制御される前記基準信号Frefが前記Foutより長い時間だけ第一の論理状態にある場合に、第一の論理状態信号を出力し、前記位相検出手段は、更に、前記位相検出論理信号PDoutを出力するために、前記第一および第二論理信号に応答するプッシュプル回路を含むことを特徴とする請求項4記載の位相同期ループ回路。
- 前記第一論理状態は、ロウ状態であることを特徴とする請求項5記載の位相同期ループ回路。
- 前記位相検出手段と前記電圧制御発振器との間に接続されて、前記PDout信号の論理状態に比例した、フィルタ処理された電圧信号を前記電圧制御発振器へ出力するためのフィルタ手段を更に含み、前記電圧制御発振器は、前記フィルタ処理された信号の前記電圧に比例した周波数を有する前記出力信号Foutを出力することを特徴とする請求項5記載の位相同期ループ回路。
- 前記電圧制御発振器からの前記出力信号Foutは、Mにより分周されるFref信号がNにより分周されるFoutに等しくなるまで、F2信号の調整値を得るために、前記第二カウンタ手段へ接続されることを特徴とする請求項4記載の位相同期ループ回路。
- 第三のP,P+1カウンタを更に含み、前記第三のカウンタは、前記電圧制御発振器と前記第二カウンタとの間に接続されて、前記電圧制御発振器からの前記出力信号Foutの前記周波数が、関係付けられる周波数まで比例的に低減されることを特徴とする請求項4記載の位相同期ループ回路。
- 前記第一カウンタ手段、前記第二カウンタ手段および前記位相検出手段は、更に、前記回路をリセットするためのリセット信号に応答することを特徴とする請求項4記載の位相同期ループ回路。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/073,314 US5317283A (en) | 1993-06-08 | 1993-06-08 | Method to reduce noise in PLL frequency synthesis |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6112601A Division JPH0730417A (ja) | 1993-06-08 | 1994-05-26 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008286936A Division JP2009065704A (ja) | 1993-06-08 | 2008-11-07 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007124699A true JP2007124699A (ja) | 2007-05-17 |
Family
ID=22113019
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6112601A Withdrawn JPH0730417A (ja) | 1993-06-08 | 1994-05-26 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
JP2007000047A Withdrawn JP2007124699A (ja) | 1993-06-08 | 2007-01-04 | 位相同期ループ回路 |
JP2008286936A Pending JP2009065704A (ja) | 1993-06-08 | 2008-11-07 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6112601A Withdrawn JPH0730417A (ja) | 1993-06-08 | 1994-05-26 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008286936A Pending JP2009065704A (ja) | 1993-06-08 | 2008-11-07 | 位相同期ループ周波数合成に於ける低雑音化の方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5317283A (ja) |
JP (3) | JPH0730417A (ja) |
GB (1) | GB2278969B (ja) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3643385B2 (ja) * | 1993-05-19 | 2005-04-27 | 株式会社東芝 | 半導体回路装置 |
KR960012921B1 (ko) * | 1993-10-06 | 1996-09-25 | 현대전자산업 주식회사 | 위상 록 루프 회로 |
US5493243A (en) * | 1994-01-04 | 1996-02-20 | Level One Communications, Inc. | Digitally controlled first order jitter attentuator using a digital frequency synthesizer |
GB9415185D0 (en) * | 1994-07-28 | 1994-09-21 | Thomson Consumer Electronics | Fast acting control system |
US5754607A (en) * | 1995-05-10 | 1998-05-19 | Alcatel Network Systems, Inc. | Method and apparatus for achieving fast phase settling in a phase locked loop |
US5815041A (en) * | 1996-04-12 | 1998-09-29 | Silicon Image, Inc. | High-speed and high-precision phase locked loop having phase detector with dynamic logic structure |
US5828678A (en) * | 1996-04-12 | 1998-10-27 | Avid Technologies, Inc. | Digital audio resolving apparatus and method |
GB2313001B (en) * | 1996-05-07 | 2000-11-01 | Nokia Mobile Phones Ltd | Frequency modulation using a phase-locked loop |
GB2317512B (en) * | 1996-09-12 | 2001-01-24 | Nokia Mobile Phones Ltd | Frequency modulation using a phase-locked loop |
KR19980057086U (ko) * | 1997-01-29 | 1998-10-15 | 배순훈 | 세탁기의 현가장치 |
JPH1139806A (ja) * | 1997-07-14 | 1999-02-12 | Oki Electric Ind Co Ltd | クロック逓倍回路 |
FI105426B (fi) * | 1998-05-29 | 2000-08-15 | Nokia Mobile Phones Ltd | Digitaalinen vaihevertailija ilman kuollutta aluetta |
US6262608B1 (en) * | 1999-05-21 | 2001-07-17 | Parthus Technologies Plc | Delay locked loop with immunity to missing clock edges |
US6326826B1 (en) | 1999-05-27 | 2001-12-04 | Silicon Image, Inc. | Wide frequency-range delay-locked loop circuit |
US6262611B1 (en) * | 1999-06-24 | 2001-07-17 | Nec Corporation | High-speed data receiving circuit and method |
JP2001069003A (ja) | 1999-08-25 | 2001-03-16 | Nec Saitama Ltd | Pll制御回路及びその制御方法 |
DE10042233C2 (de) * | 2000-08-28 | 2002-07-11 | Siemens Ag | Takt-und Datenregenerator mit Demultiplexerfunktion |
AU2003240428A1 (en) * | 2002-06-19 | 2004-01-06 | R & C Holding Aps | Phase-locked loop with incremental phase detectors and a converter for combining a logical operation with a digital to analog conversion |
JP3938395B2 (ja) * | 2002-07-01 | 2007-06-27 | 富士通株式会社 | クロック逓倍回路 |
CN100580659C (zh) * | 2004-09-08 | 2010-01-13 | 诺基亚公司 | 在多个处理循环中处理数据字的方法和装置 |
KR100668360B1 (ko) * | 2004-11-09 | 2007-01-16 | 한국전자통신연구원 | 위상 주파수 검출기 |
JP2015164288A (ja) * | 2014-01-30 | 2015-09-10 | 株式会社リコー | 原子発振器及びその製造方法 |
US9172570B1 (en) * | 2014-06-13 | 2015-10-27 | Intel IP Corporation | Compensation of oscillator frequency pulling |
JP6435683B2 (ja) * | 2014-07-23 | 2018-12-12 | 株式会社ソシオネクスト | Pll回路および半導体集積回路 |
EP2983294B1 (en) * | 2014-08-07 | 2019-07-03 | Nxp B.V. | RF circuit |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3723889A (en) * | 1971-12-22 | 1973-03-27 | Bell Telephone Labor Inc | Phase and frequency comparator |
US5008629A (en) * | 1988-06-20 | 1991-04-16 | Matsushita Electric Industrial Co., Ltd. | Frequency synthesizer |
US4951005A (en) * | 1989-12-27 | 1990-08-21 | Motorola, Inc. | Phase locked loop with reduced frequency/phase lock time |
-
1993
- 1993-06-08 US US08/073,314 patent/US5317283A/en not_active Expired - Lifetime
-
1994
- 1994-05-26 JP JP6112601A patent/JPH0730417A/ja not_active Withdrawn
- 1994-06-06 GB GB9411285A patent/GB2278969B/en not_active Expired - Lifetime
-
2007
- 2007-01-04 JP JP2007000047A patent/JP2007124699A/ja not_active Withdrawn
-
2008
- 2008-11-07 JP JP2008286936A patent/JP2009065704A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH0730417A (ja) | 1995-01-31 |
GB9411285D0 (en) | 1994-07-27 |
US5317283A (en) | 1994-05-31 |
GB2278969B (en) | 1998-06-10 |
GB2278969A (en) | 1994-12-14 |
JP2009065704A (ja) | 2009-03-26 |
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