JP2016122914A - 周波数変調回路及び半導体装置 - Google Patents
周波数変調回路及び半導体装置 Download PDFInfo
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- JP2016122914A JP2016122914A JP2014261136A JP2014261136A JP2016122914A JP 2016122914 A JP2016122914 A JP 2016122914A JP 2014261136 A JP2014261136 A JP 2014261136A JP 2014261136 A JP2014261136 A JP 2014261136A JP 2016122914 A JP2016122914 A JP 2016122914A
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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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
-
- 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
- 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
- H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
- H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
-
- 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
- H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
-
- 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
- H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
-
- 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
- H03L7/1974—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 for fractional frequency division
- H03L7/1976—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 for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0037—Functional aspects of modulators
- H03C2200/0041—Calibration of modulators
-
- 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
- H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
11 送信周波数設定ブロック
12 データ値変換部
13 PLLブロック
14 校正演算ブロック
15 補間演算ブロック
16 校正値保持ブロック
17 出力部
21 発振器
22 位相比較器
23 VCO
24 分周部
25 加算部
26 分周値設定部
27 乗算部
28 D/A変換部
31 レジスタ
32 比較部
33 校正値算出部
Claims (10)
- 校正値に基づいて変調度を校正しつつ入力データ信号を周波数変調する変調部と、
チャネル選択信号の供給を受け、全送信周波数帯域のうちから前記チャネル選択信号に応じた送信周波数帯域を選択して設定する送信周波数帯域設定部と、
前記全送信周波数帯域をn(n:2以上の整数)に分けたn個の送信周波数帯域の各々の中心周波数における変調度の校正値を前記入力データ信号に基づいて算出し、n個の実測校正値を得る校正演算部と、
前記n個の実測校正値に基づいて補間演算を行い、前記n個の送信周波数帯域のうち隣接する送信周波数帯域の中心周波数の中間の周波数における校正値と、前記全送信周波数帯域の両端部の周波数における校正値と、を算出し、(n+1)個の補間校正値を得る補間演算部と、
前記n個の実測校正値及び前記(n+1)個の補間校正値のうち、前記送信周波数帯域設定部において設定された送信周波数帯域に対応する前記実測校正値又は前記補間校正値を、前記変調部に前記校正値として供給する校正値供給部と、
を含むことを特徴とする周波数変調回路。 - 前記補間演算部は、隣接する前記送信周波数帯域の中心周波数における校正値の平均値を算出することにより前記中間の周波数の校正値を算出し、線形補間により前記全送信周波数帯域の両端部の周波数の校正値を算出する、ことを特徴とする請求項1に記載の周波数変調回路。
- 前記補間演算部は、非線形関数に基づいて前記中間の周波数の校正値を算出し、非線形補間により前記全送信周波数帯域の両端部の周波数の校正値を算出する、ことを特徴とする請求項1に記載の周波数変調回路。
- 前記変調部は、
電圧制御発振回路と、
前記電圧制御発振回路の発振信号を分周して分周信号を生成する分周部と、
前記分周信号と所定のとの位相差を比較して前記位相差を示す位相差信号を前記電圧制御発振回路に供給する位相比較部と、
を含み、
前記電圧制御発振回路は、前記入力データ信号及び前記校正値の乗算結果と、前記位相差信号と、に基づいて前記発振信号を調整することを特徴とする請求項1乃至3のいずれか1に記載の周波数変調回路。 - 前記校正演算部は、分周信号のトグル回数の目標値を記憶するレジスタを備え、
前記分周部から供給された前記分周信号のトグル回数と前記目標値とを比較して、前記n個の実測校正値を得ることを特徴とする請求項4に記載の周波数変調回路。 - 入力データ信号を周波数変調して出力する周波数変調回路を有する半導体装置であって、
前記周波数変調回路は、
校正値に基づいて変調度を校正しつつ入力データ信号を周波数変調する変調部と、
チャネル選択信号の供給を受け、全送信周波数帯域のうちから前記チャネル選択信号に応じた送信周波数帯域を選択して設定する送信周波数帯域設定部と、
前記全送信周波数帯域をn(n:2以上の整数)に分けたn個の送信周波数帯域の各々の中心周波数における変調度の校正値を前記入力データ信号に基づいて算出し、n個の実測校正値を得る校正演算部と、
前記n個の実測校正値に基づいて補間演算を行い、前記n個の送信周波数帯域のうち隣接する送信周波数帯域の中心周波数の中間の周波数における校正値と、前記全送信周波数帯域の両端部の周波数における校正値と、を算出し、(n+1)個の補間校正値を得る補間演算部と、
前記n個の実測校正値及び前記(n+1)個の補間校正値のうち、前記送信周波数帯域設定部において設定された送信周波数帯域に対応する前記実測校正値又は前記補間校正値を、前記変調部に前記校正値として供給する校正値供給部と、
を含むことを特徴とする半導体装置。 - 前記補間演算部は、隣接する前記送信周波数帯域の中心周波数における校正値の平均値を算出することにより前記中間の周波数の校正値を算出し、線形補間により前記全送信周波数帯域の両端部の周波数の校正値を算出する、ことを特徴とする請求項6に記載の半導体装置。
- 前記補間演算部は、非線形関数に基づいて前記中間の周波数の校正値を算出し、非線形補間により前記全送信周波数帯域の両端部の周波数の校正値を算出する、ことを特徴とする請求項6に記載の半導体装置。
- 前記変調部は、
電圧制御発振回路と、
前記電圧制御発振回路の発振信号を分周して分周信号を生成する分周部と、
前記分周信号と所定のとの位相差を比較して前記位相差を示す位相差信号を前記電圧制御発振回路に供給する位相比較部と、
を含み、
前記電圧制御発振回路は、前記入力データ信号及び前記校正値の乗算結果と、前記位相差信号と、に基づいて前記発振信号を調整することを特徴とする請求項6乃至8のいずれか1に記載の半導体装置。 - 前記校正演算部は、分周信号のトグル回数の目標値を記憶するレジスタを備え、
前記分周部から供給された前記分周信号のトグル回数と前記目標値とを比較して、前記n個の実測校正値を得ることを特徴とする請求項9に記載の半導体装置。
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| US14/977,729 US9432029B2 (en) | 2014-12-24 | 2015-12-22 | Frequency modulation circuit and semiconductor device |
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| US4743867A (en) * | 1987-08-03 | 1988-05-10 | Motorola, Inc. | Compensation circuitry for dual port phase-locked loops |
| WO2000046927A1 (en) * | 1999-02-02 | 2000-08-10 | Cleveland Medical Devices Inc. | Three point modulated phase locked loop frequency synthesis system and method |
| JP2005191999A (ja) * | 2003-12-26 | 2005-07-14 | Matsushita Electric Ind Co Ltd | 変調器、半導体集積回路、有線および無線通信装置 |
| JP2012023626A (ja) * | 2010-07-15 | 2012-02-02 | Lapis Semiconductor Co Ltd | 周波数シンセサイザ装置及び変調周波数変位調整方法 |
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| JPH1022736A (ja) | 1996-07-03 | 1998-01-23 | Saitama Nippon Denki Kk | 変調補正機能付き無線通信機および変調補正方法 |
| FR2847101B1 (fr) * | 2002-11-08 | 2005-09-23 | Thales Sa | Procede et modem pour la synchronisation et la poursuite de phase |
| US7432750B1 (en) * | 2005-12-07 | 2008-10-07 | Netlogic Microsystems, Inc. | Methods and apparatus for frequency synthesis with feedback interpolation |
| US8248175B2 (en) * | 2010-12-30 | 2012-08-21 | Silicon Laboratories Inc. | Oscillator with external voltage control and interpolative divider in the output path |
| US8873693B2 (en) * | 2011-09-21 | 2014-10-28 | Fujitsu Limited | Phase averaging-based clock and data recovery |
| US8692599B2 (en) * | 2012-08-22 | 2014-04-08 | Silicon Laboratories Inc. | Interpolative divider linearity enhancement techniques |
| WO2014132599A1 (ja) * | 2013-02-27 | 2014-09-04 | パナソニック株式会社 | 受信装置、位相誤差推定方法、及び位相誤差補正方法 |
| US9294260B2 (en) * | 2013-12-27 | 2016-03-22 | Intel Corporation | Phase adjustment circuit for clock and data recovery circuit |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743867A (en) * | 1987-08-03 | 1988-05-10 | Motorola, Inc. | Compensation circuitry for dual port phase-locked loops |
| WO2000046927A1 (en) * | 1999-02-02 | 2000-08-10 | Cleveland Medical Devices Inc. | Three point modulated phase locked loop frequency synthesis system and method |
| JP2005191999A (ja) * | 2003-12-26 | 2005-07-14 | Matsushita Electric Ind Co Ltd | 変調器、半導体集積回路、有線および無線通信装置 |
| JP2012023626A (ja) * | 2010-07-15 | 2012-02-02 | Lapis Semiconductor Co Ltd | 周波数シンセサイザ装置及び変調周波数変位調整方法 |
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| US20160191064A1 (en) | 2016-06-30 |
| JP6404114B2 (ja) | 2018-10-10 |
| US9432029B2 (en) | 2016-08-30 |
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