JPS5757007A - Orthogonal delay detecting circuit - Google Patents
Orthogonal delay detecting circuitInfo
- 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
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.
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)
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 |
-
1980
- 1980-09-24 JP JP13153580A patent/JPS5757007A/en active Pending
Cited By (14)
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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