JP5006878B2 - データ信号の復調に適応された方法および装置 - Google Patents
データ信号の復調に適応された方法および装置 Download PDFInfo
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- JP5006878B2 JP5006878B2 JP2008530272A JP2008530272A JP5006878B2 JP 5006878 B2 JP5006878 B2 JP 5006878B2 JP 2008530272 A JP2008530272 A JP 2008530272A JP 2008530272 A JP2008530272 A JP 2008530272A JP 5006878 B2 JP5006878 B2 JP 5006878B2
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- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 230000005672 electromagnetic field Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000001934 delay Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- 230000010354 integration Effects 0.000 description 2
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
- H03D1/24—Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input 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
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
- H03L7/0816—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used the controlled phase shifter and the frequency- or phase-detection arrangement being connected to a common input
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2331—Demodulator circuits; Receiver circuits using non-coherent demodulation wherein the received signal is demodulated using one or more delayed versions of itself
-
- 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
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
- Near-Field Transmission Systems (AREA)
- Dc Digital Transmission (AREA)
Description
・ノイズがより少ない
・ISIはより小さく、多くの場合ISIは無い
・ASICへの組み込みがより容易である
・回路動作がより安定している
・シリコン上でより小さな面積を占める
・一般的なデバイスおよび生産プロセスを用いる
ことがある。
図1および図2を一緒に参照する。図2に示された信号1は、キャリア信号2上に形成された位相信号である。そのキャリア信号は、図1の励起変調3入力に入力される。図2は、図1のキャリア信号2に乗った位相信号1をより明確に示す。図1には、位相ロックループ(PLL:Phase Locked Loop)のトラック信号4も示される。回路の動作中に位相信号が図1の回路構成に与える影響としては、PLLが「ドリフト」することがある。
・復元された波形を歪める。
・その前に復元されたデータに依存した形で、復元されるデータのエッジを正しい位置から移動させる。
Claims (20)
- 位相ジッタ変調(PJM)信号に乗ったデータ信号を検出する方法であって、
位相ジッタ変調された第1信号を提供するステップと、
位相ジッタ変調された前記第1信号へ1ビット周期よりも少ない遅延を与えて位相ジッタ変調された第2信号を得るステップと、
前記第1信号と前記第2信号とを比較するステップと、
前記第1信号と前記第2信号との間の位相差を測定するステップと、
前記位相差に基づいてデータ信号を再構成するステップと、を含むことを特徴とする方法。 - 前記遅延は可変遅延であることを特徴とする請求項1に記載の方法。
- 前記位相差は、XORゲートによって測定されることを特徴とする請求項1または2に記載の方法。
- 前記位相差は、ミキサによって測定されることを特徴とする請求項1または2に記載の方法。
- 前記位相差は、乗算器によって測定されることを特徴とする請求項1または2に記載の方法。
- 前記位相差は、デジタルバーニア回路によって測定されることを特徴とする請求項1または2に記載の方法。
- 前記遅延は、1ビット周期の半分よりも少ないことを特徴とする請求項1から6のいずれかに記載の方法。
- 前記遅延は、1ビット周期の4分の1よりも少ないことを特徴とする請求項1から6のいずれかに記載の方法。
- RFIDシステムに応用された請求項1から8のいずれかに記載の方法。
- 位相ジッタ変調(PJM)信号に乗ったデータ信号を復調するように適応されたデバイスであって、
位相ジッタ変調された第1信号を受信するように適応された受信器と、
位相ジッタ変調された前記第1信号に1ビット周期よりも少ない遅延を与えて位相ジッタ変調された第2信号を得るように適応された遅延手段と、
前記第1信号と前記第2信号とを比較し、前記第1信号と前記第2信号との間の位相差を測定し、前記位相差に基づいてデータ信号を再構成するように適応された論理演算手段と、を備えることを特徴とするデバイス。 - 前記遅延は可変遅延であることを特徴とする請求項10に記載のデバイス。
- 前記位相差は、XORゲートによって測定されることを特徴とする請求項10または11に記載のデバイス。
- 前記位相差は、ミキサによって測定されることを特徴とする請求項10または11に記載のデバイス。
- 前記位相差は、乗算器によって測定されることを特徴とする請求項10または11に記載のデバイス。
- 前記位相差は、デジタルバーニア回路によって測定されることを特徴とする請求項10または11に記載のデバイス。
- 前記遅延は1ビット周期の半分よりも少ないことを特徴とする請求項10から15のいずれかに記載のデバイス。
- 前記遅延は、1ビット周期の4分の1よりも少ないことを特徴とする請求項10から16のいずれかに記載のデバイス。
- RFIDデバイスである請求項10から17のいずれかに記載のデバイス。
- 前記デバイスはタグ、トランスポンダまたはインテロゲータであることを特徴とする請求項18に記載のデバイス。
- 請求項10から19のいずれかに記載のデバイスを含むRFIDシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005904988A AU2005904988A0 (en) | 2005-09-12 | A Method and Apparatus Adapted to Demodulate a Data Signal | |
AU2005904988 | 2005-09-12 | ||
PCT/AU2006/001316 WO2007030860A1 (en) | 2005-09-12 | 2006-09-08 | A method and apparatus adapted to demodulate a data signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009508413A JP2009508413A (ja) | 2009-02-26 |
JP5006878B2 true JP5006878B2 (ja) | 2012-08-22 |
Family
ID=37864544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008530272A Active JP5006878B2 (ja) | 2005-09-12 | 2006-09-08 | データ信号の復調に適応された方法および装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8451950B2 (ja) |
EP (1) | EP1943743B1 (ja) |
JP (1) | JP5006878B2 (ja) |
WO (1) | WO2007030860A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8218704B2 (en) * | 2008-08-28 | 2012-07-10 | Advantest Corporation | Demodulation method and demodulator of pulse-edge shifted pulse |
KR101210594B1 (ko) * | 2009-03-31 | 2012-12-11 | 한국전자통신연구원 | 위상 지터 변조 태그 내 수신 신호의 정확한 복조를 위한 동기화 장치 및 이를 포함하는 태그 |
US8422594B2 (en) * | 2009-05-26 | 2013-04-16 | Infineon Technologies Ag | Circuit for demodulating a phase modulated signal |
CN107860405B (zh) * | 2017-10-23 | 2019-08-13 | 华中科技大学 | 一种基于游标效应的光谱解调方法及其解调装置 |
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-
2006
- 2006-09-08 EP EP06774944.0A patent/EP1943743B1/en active Active
- 2006-09-08 US US12/066,361 patent/US8451950B2/en active Active
- 2006-09-08 WO PCT/AU2006/001316 patent/WO2007030860A1/en active Application Filing
- 2006-09-08 JP JP2008530272A patent/JP5006878B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
EP1943743A4 (en) | 2013-09-18 |
US20080267331A1 (en) | 2008-10-30 |
JP2009508413A (ja) | 2009-02-26 |
WO2007030860A1 (en) | 2007-03-22 |
EP1943743A1 (en) | 2008-07-16 |
US8451950B2 (en) | 2013-05-28 |
EP1943743B1 (en) | 2019-10-23 |
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