JP5899244B2 - 基準周波数発生装置、及び正弦波出力方法 - Google Patents
基準周波数発生装置、及び正弦波出力方法 Download PDFInfo
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- JP5899244B2 JP5899244B2 JP2013550230A JP2013550230A JP5899244B2 JP 5899244 B2 JP5899244 B2 JP 5899244B2 JP 2013550230 A JP2013550230 A JP 2013550230A JP 2013550230 A JP2013550230 A JP 2013550230A JP 5899244 B2 JP5899244 B2 JP 5899244B2
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- 238000006243 chemical reaction Methods 0.000 claims description 24
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- 238000010586 diagram Methods 0.000 description 9
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
- H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/022—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B28/00—Generation of oscillations by methods not covered by groups H03B5/00 - H03B27/00, including modification of the waveform to produce sinusoidal oscillations
-
- 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
- H03L7/16—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
-
- 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
- H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
- H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
-
- 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
- H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
- H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
- H03L7/235—Nested phase locked loops
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
22 位相比較器(位相比較部)
23 ループフィルタ
24 NCO(数値制御発振器)
25 分周器
26 波形変換回路(波形変換部)
27 DAC
28 BPF(バンドパスフィルタ)
31 PLL回路
32 DDS(ダイレクトデジタルシンセサイザ)
Claims (5)
- ノコギリ波を出力する数値制御発振器と、前記数値制御発振器が出力したノコギリ波又は当該ノコギリ波に基づいて得られた信号をデジタル信号からアナログ信号に変換するDACと、前記DACによってアナログ信号に変換された信号が入力され、入力された信号のうち、前記ノコギリ波の基本周波数または整数倍の周波数の信号を通過させることで、当該周波数の正弦波を抽出するバンドパスフィルタと、を備え、前記バンドパスフィルタはそれぞれ異なる周波数の信号を抽出する複数のバンドパスフィルタが並列に配置された構成を備えている、ダイレクトデジタルシンセサイザと、
前記数値制御発振器が生成した信号又はそれに基づく信号とリファレンス信号との位相を比較して、比較結果を前記数値制御発振器に出力する位相比較器と、
を備え、
前記数値制御発振器は、前記比較結果に基づいて前記ノコギリ波を出力し、
前記複数のバンドパスフィルタの出力する信号及び当該信号に基づく信号のうち少なくとも一方の信号を基準周波数信号とし、
前記リファレンス信号は、GNSSの衛星からの信号に基づいて設定されている、
ことを特徴とする基準周波数発生装置。 - 請求項1に記載の基準周波数発生装置であって、
前記数値制御発振器が出力したノコギリ波を三角波に変換する波形変換部を備えることを特徴する基準周波数発生装置。 - 請求項2に記載の基準周波数発生装置であって、
前記波形変換部は、ノコギリ波の半周期分に排他的論理和の演算を行うことで、当該半周期分を反転させる回路を含むことを特徴とする基準周波数発生装置。 - 請求項1乃至請求項3のいずれか1項に記載の基準周波数発生装置であって、
前記バンドパスフィルタが出力する正弦波又はこの正弦波に基づく信号をリファレンス信号とする後段位相同期回路を備え、
前記後段位相同期回路は、前記バンドパスフィルタが出力する正弦波又はこの正弦波に基づく信号と同期した信号を出力する電圧制御発振器を備え、
前記電圧制御発振器が出力する信号を基準周波数信号とすることを特徴とする基準周波数発生装置。 - 数値制御発振器にノコギリ波を生成させるノコギリ波生成工程と、
前記数値制御発振器が出力したノコギリ波又は当該ノコギリ波に基づいて得られた信号をデジタル信号からアナログ信号に変換するアナログ変換工程と、
前記アナログ変換工程によってアナログ信号に変換された信号のうち、前記ノコギリ波の基本周波数または整数倍の信号をそれぞれに通過させる複数のバンドパスフィルタを適用することで、複数の周波数の正弦波を抽出する正弦波抽出工程と、
前記ノコギリ波生成工程において生成された信号又はそれに基づく信号とリファレンス信号との位相を比較して、比較結果を前記数値制御発振器に出力する位相比較工程と、
を含み、
前記リファレンス信号は、GNSSの衛星からの信号に基づいて設定されている、
ことを特徴とする正弦波出力方法。
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JP2013550230A JP5899244B2 (ja) | 2011-12-19 | 2012-12-10 | 基準周波数発生装置、及び正弦波出力方法 |
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PCT/JP2012/081948 WO2013094459A1 (ja) | 2011-12-19 | 2012-12-10 | ダイレクトデジタルシンセサイザ、基準周波数発生装置、及び正弦波出力方法 |
JP2013550230A JP5899244B2 (ja) | 2011-12-19 | 2012-12-10 | 基準周波数発生装置、及び正弦波出力方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP6310709B2 (ja) * | 2014-01-28 | 2018-04-11 | 株式会社日立製作所 | 周期信号発生装置 |
KR102102328B1 (ko) * | 2014-01-28 | 2020-04-20 | 엘지이노텍 주식회사 | 위상고정루프 회로 및 이의 제어 방법 |
JP6655896B2 (ja) * | 2014-10-08 | 2020-03-04 | 日本電波工業株式会社 | 周波数シンセサイザ |
CN104897994A (zh) * | 2015-06-10 | 2015-09-09 | 中国科学院光电技术研究所 | 一种基于fpga的全数字化高精度多路的扫频模块 |
JP6766427B2 (ja) * | 2016-04-25 | 2020-10-14 | セイコーエプソン株式会社 | 回路装置、発振器、電子機器及び移動体 |
CN107436619B (zh) * | 2017-08-08 | 2020-02-07 | 重庆邮电大学 | 一种高精度低代价数字正弦波发生装置 |
CN109426176B (zh) * | 2017-08-22 | 2024-07-02 | 中国计量科学研究院 | 一种多路隔离且时钟同步的正弦波发生系统及其方法 |
CN114166796B (zh) * | 2021-11-19 | 2023-04-18 | 杭州泽天春来科技有限公司 | 基于激光光谱法和氢火焰离子化法的非甲烷总烃测量系统 |
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JPH05206732A (ja) * | 1992-01-27 | 1993-08-13 | Hitachi Ltd | 周波数シンセサイザ |
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US9093996B2 (en) | 2015-07-28 |
US20140361812A1 (en) | 2014-12-11 |
JPWO2013094459A1 (ja) | 2015-04-27 |
WO2013094459A1 (ja) | 2013-06-27 |
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