JPS5757007A - Orthogonal delay detecting circuit - Google Patents

Orthogonal delay detecting circuit

Info

Publication number
JPS5757007A
JPS5757007A JP13153580A JP13153580A JPS5757007A JP S5757007 A JPS5757007 A JP S5757007A JP 13153580 A JP13153580 A JP 13153580A JP 13153580 A JP13153580 A JP 13153580A JP S5757007 A JPS5757007 A JP S5757007A
Authority
JP
Japan
Prior art keywords
signals
multiplying
signal
base band
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13153580A
Other languages
Japanese (ja)
Inventor
Hiroshi Suzuki
Yasushi Yamao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP13153580A priority Critical patent/JPS5757007A/en
Publication of JPS5757007A publication Critical patent/JPS5757007A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To use an integrated circuit of a low speed and a low power consumption and to obtain a high-precision detector, by converting the frequency of a modulation wave to that of the base band and extracting inphase components and orthogonal components and subjecting them to the digital signal processing. CONSTITUTION:Base band components obtained by causing the multiplication result between the modulation wave inputted from a terminal and the output of a local oscillator 7 to pass through an LPF10-1 and base band components obtained by causing the multiplication result between the modulation wave and the output, which is obtained by shifting the output of the oscillator 7 by a 90 deg. phase shifter 9, to pass through an LPF10-2 are subjected to A/D conversion in 11-1 and 11-2 respectively to obtain the first and the second signals. The first and the second signals are delayed by memories 12-1 and 12-2 respectively to obtain the third and the fourth signals, and a signal obtained by multiplying the second and the third signals and a signal obtained by multiplying the first and the fourth signals are subjected to subtraction to obtain the first detection signal, and a signal obtained by multiplying the first and the third signals and a signal obtained by multiplying the second and the fourth signals are added to obtain the second detection signal, and the first and the second detection signals are supplied to a phase converting circuit 16 to obtain a phase detection signal.
JP13153580A 1980-09-24 1980-09-24 Orthogonal delay detecting circuit Pending JPS5757007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13153580A JPS5757007A (en) 1980-09-24 1980-09-24 Orthogonal delay detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13153580A JPS5757007A (en) 1980-09-24 1980-09-24 Orthogonal delay detecting circuit

Publications (1)

Publication Number Publication Date
JPS5757007A true JPS5757007A (en) 1982-04-06

Family

ID=15060338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13153580A Pending JPS5757007A (en) 1980-09-24 1980-09-24 Orthogonal delay detecting circuit

Country Status (1)

Country Link
JP (1) JPS5757007A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121857A (en) * 1981-09-24 1983-07-20 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレ−シヨン Demodulating circuit for radio receiver for receiving frequency modulation signal
JPS60178372A (en) * 1984-01-19 1985-09-12 ノーザン　テレコム　リミテッド Digital navstar receiver
JPS6143833A (en) * 1984-07-26 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JPS6143834A (en) * 1984-07-30 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JPS61145906A (en) * 1984-12-17 1986-07-03 フエアチヤイルド　ウエストン　システムズ　インコーポレーテツド Digital demodulator for signal continuously modulated in phase and in frequency
JPH01151307A (en) * 1987-12-08 1989-06-14 Toshiba Corp Digital fm demodulator
JPH01222505A (en) * 1988-03-01 1989-09-05 Sharp Corp Demodulation circuit
JPH01241907A (en) * 1988-03-23 1989-09-26 Fujitsu Ten Ltd Demodulator for angular modulated signal
WO1996017441A1 (en) * 1994-11-30 1996-06-06 Matsushita Electric Industrial Co., Ltd. Receiving circuit

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121857A (en) * 1981-09-24 1983-07-20 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレ−シヨン Demodulating circuit for radio receiver for receiving frequency modulation signal
JPS60178372A (en) * 1984-01-19 1985-09-12 ノーザン　テレコム　リミテッド Digital navstar receiver
JPS6143833A (en) * 1984-07-26 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JPS6143834A (en) * 1984-07-30 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JPH0754882B2 (en) * 1984-12-17 1995-06-07 フエアチヤイルド ウエストン システムズ インコーポレーテツド Digital demodulator for continuously phase-modulated or frequency-modulated signal
JPS61145906A (en) * 1984-12-17 1986-07-03 フエアチヤイルド　ウエストン　システムズ　インコーポレーテツド Digital demodulator for signal continuously modulated in phase and in frequency
JPH01151307A (en) * 1987-12-08 1989-06-14 Toshiba Corp Digital fm demodulator
JPH01222505A (en) * 1988-03-01 1989-09-05 Sharp Corp Demodulation circuit
JPH01241907A (en) * 1988-03-23 1989-09-26 Fujitsu Ten Ltd Demodulator for angular modulated signal
WO1996017441A1 (en) * 1994-11-30 1996-06-06 Matsushita Electric Industrial Co., Ltd. Receiving circuit
US5914986A (en) * 1994-11-30 1999-06-22 Matsushita Electric Industrial Co., Ltd. Receiving circuit
US6236688B1 (en) 1994-11-30 2001-05-22 Matsushita Electric Industrial Co., Ltd. Receiving circuit
US6516038B1 (en) 1994-11-30 2003-02-04 Matsushita Electric Industrial Co., Ltd. Receiving circuit
US6600795B1 (en) 1994-11-30 2003-07-29 Matsushita Electric Industrial Co., Ltd. Receiving circuit

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