FR2440124A1 - Recepteur de radio pour sons modules en frequence - Google Patents
Recepteur de radio pour sons modules en frequenceInfo
- Publication number
- FR2440124A1 FR2440124A1 FR7926360A FR7926360A FR2440124A1 FR 2440124 A1 FR2440124 A1 FR 2440124A1 FR 7926360 A FR7926360 A FR 7926360A FR 7926360 A FR7926360 A FR 7926360A FR 2440124 A1 FR2440124 A1 FR 2440124A1
- Authority
- FR
- France
- Prior art keywords
- radio receiver
- rocker
- mixer
- mixers
- selective filter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/022—Selective call receivers
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
- G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
- G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
-
- 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
- H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
- H03D3/20—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements producing pulses whose amplitude or duration depends on phase difference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
UN RECEPTEUR DE RADIO SELON LA PRESENTE INVENTION EST, PAR EXEMPLE, UTILISE DANS LES DISPOSITIFS DE RECHERCHE DE PERSONNES ET DANS CERTAINS DISPOSITIFS DE NAVIGATION. UN SIMPLE RECEPTEUR HOMODYNE ALIMENTE UN FILTRE SELECTIF SUIVI D'UN CIRCUIT DETECTEUR. LE RECEPTEUR HOMODYNE COMPORTE DEUX MELANGEURS A GAIN ELEVE AUXQUELS SONT APPLIQUES LES SIGNAUX RECUS. UN OSCILLATEUR LOCAL ALIMENTE DIRECTEMENT UN MELANGEUR ET L'AUTRE MELANGEUR AVEC UN DEPHASAGE DE 90. LES SORTIES DES MELANGEURS SONT FILTREES DANS DES FILTRES PASSE-BAS ET LIMITEES EN AMPLITUDE. UN SIGNAL RYTHME ALORS UNE BASCULE DE TYPE D, A LAQUELLE EST APPLIQUE L'AUTRE SIGNAL. LA SORTIE DE LA BASCULE SERA UNE ONDE CARREE A LA FREQUENCE DE MODULATION. LA BASCULE ALIMENTE LE FILTRE SELECTIF.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7841679A GB2032737A (en) | 1978-10-24 | 1978-10-24 | Radio receiver for tone modulated signals |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2440124A1 true FR2440124A1 (fr) | 1980-05-23 |
FR2440124B1 FR2440124B1 (fr) | 1983-12-30 |
Family
ID=10500541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7926360A Granted FR2440124A1 (fr) | 1978-10-24 | 1979-10-24 | Recepteur de radio pour sons modules en frequence |
Country Status (6)
Country | Link |
---|---|
US (1) | US4254503A (fr) |
JP (1) | JPS5573149A (fr) |
DE (1) | DE2942512A1 (fr) |
FR (1) | FR2440124A1 (fr) |
GB (1) | GB2032737A (fr) |
NL (1) | NL7907712A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2464603A1 (fr) * | 1979-09-04 | 1981-03-06 | Int Standard Electric Corp | Recepteur de radiocommunication en modulation par deplacement de frequence |
FR2538634A1 (fr) * | 1982-12-24 | 1984-06-29 | Int Standard Electric Corp | Recepteur radio-electrique a conversion directe pour signaux modules en frequence |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2083977B (en) * | 1980-08-26 | 1984-08-22 | Standard Telephones Cables Ltd | Single channel duplex radio system |
GB2101821B (en) * | 1981-07-16 | 1984-11-14 | Standard Telephones Cables Ltd | Radio receiver for frequency shift keyed signals |
GB2106359B (en) * | 1981-09-24 | 1985-07-03 | Standard Telephones Cables Ltd | Direct conversion radio receiver for fm signals |
DE3146077C2 (de) * | 1981-11-20 | 1985-04-04 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung für Funkempfänger zur Unterdrückung von durch Mehrwegeausbreitung bedingten Empfangsstörungen |
GB2124840A (en) * | 1982-07-02 | 1984-02-22 | Philips Electronic Associated | Data demodulator for digital signals |
US4475219A (en) * | 1982-08-18 | 1984-10-02 | General Electric Company | Demodulator for frequency-shift-keyed binary data signals |
GB2141007B (en) * | 1983-06-02 | 1986-07-23 | Standard Telephones Cables Ltd | Demodulator logic for frequency shift keyed signals |
JPS60100859A (ja) * | 1983-11-08 | 1985-06-04 | Nec Corp | 周波数検波器 |
US4651107A (en) * | 1984-01-11 | 1987-03-17 | Nec Corporation | Demodulator for digital FM signals |
FR2559003B1 (fr) * | 1984-01-31 | 1986-06-20 | Lgt Lab Gen Telecomm | Emetteur et son utilisation dans un reseau d'appel de personnes |
NL8401347A (nl) * | 1984-04-27 | 1985-11-18 | Philips Nv | Een fsk data ontvanger. |
GB2189114B (en) * | 1986-02-12 | 1990-03-14 | Plessey Co Plc | Radio receivers |
US4811425A (en) * | 1987-01-09 | 1989-03-07 | Itt Avionics, A Division Of Itt Corporation | Apparatus for reducing the effects of local oscillator leakage in mixers employed in zero IF receivers |
US4761798A (en) * | 1987-04-02 | 1988-08-02 | Itt Aerospace Optical | Baseband phase modulator apparatus employing digital techniques |
DE3887204T2 (de) * | 1987-05-27 | 1994-07-07 | Fujitsu Ltd | Digitales Zweirichtungsfunkübertragungssystem unter Verwendung einer einzigen Frequenz. |
JPH06105917B2 (ja) * | 1987-12-10 | 1994-12-21 | 国際電気株式会社 | Fsk検波回路 |
CA2014916C (fr) * | 1989-04-20 | 1994-11-08 | Yoichiro Minami | Recepteur a conversion directe avec variation de la frequence de l'oscillateur local dans la recherche de la frequence de porteuse |
GB2233535A (en) * | 1989-06-30 | 1991-01-09 | Philips Electronic Associated | Radio receiver |
JPH0797779B2 (ja) * | 1989-08-25 | 1995-10-18 | 松下電器産業株式会社 | 90度移相器とデータ受信機 |
US5345187A (en) * | 1992-09-11 | 1994-09-06 | Mcguire Ronald F | Dual frequency demodulation apparatus for frequency shift keyed (FSK) data signals and FM signals and method therefor |
US5333151A (en) * | 1992-11-23 | 1994-07-26 | Ford Motor Company | High speed frequency-shift keying decoder |
GB2283844B (en) * | 1993-11-13 | 1997-06-11 | Nokia Mobile Phones Ltd | Detection of pager signal in FM radio transmission |
US5469112A (en) * | 1994-08-15 | 1995-11-21 | Motorola, Inc. | Communication device with zero-crossing demodulator |
US5453715A (en) * | 1994-08-15 | 1995-09-26 | Motorola, Inc. | Communication device with efficient multi-level digital demodulator |
WO1996007234A1 (fr) * | 1994-08-26 | 1996-03-07 | Motorola Inc. | Dispositif de communications a generateur de passage a zero |
KR100460357B1 (ko) * | 1996-03-02 | 2005-02-24 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 제어신호발생을위한회로장치및무선수신기 |
US5862466A (en) * | 1997-01-09 | 1999-01-19 | Hewlett-Packard Company | Method and apparatus for automatically balancing a radio-frequency mixer |
GB2328813B (en) * | 1997-08-28 | 2001-08-29 | Mitel Corp | A radio frequency zero IF direct down converter |
CA2281236C (fr) | 1999-09-01 | 2010-02-09 | Tajinder Manku | Methodes rf de conversion directe au moyen d'un signal virtuel d'oscillateur local |
US6968019B2 (en) * | 2000-11-27 | 2005-11-22 | Broadcom Corporation | IF FSK receiver |
US20040157571A1 (en) * | 2003-02-07 | 2004-08-12 | Klaas Wortel | Enhanced register based FSK demodulator |
JP4546295B2 (ja) * | 2005-03-16 | 2010-09-15 | 富士通セミコンダクター株式会社 | 受信装置 |
US7983643B2 (en) * | 2008-07-03 | 2011-07-19 | Panasonic Corporation | Frequency demodulation with threshold extension |
JP1677395S (fr) | 2020-05-22 | 2021-01-25 | ||
JP1686862S (fr) | 2020-05-22 | 2021-05-31 | ||
JP1686932S (fr) | 2020-05-22 | 2021-05-31 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1048064A (en) * | 1964-05-29 | 1966-11-09 | Telefunken Patent | Improvements in or relating to frequency modulated or shifted telegraph and like receivers |
US3670242A (en) * | 1969-12-03 | 1972-06-13 | Lear Siegler Inc | A selective paging receiver and decoder employing an electronic filter means |
FR2307402A1 (fr) * | 1975-04-10 | 1976-11-05 | Int Standard Electric Corp | Recepteur de signaux multifrequences |
GB1517121A (en) * | 1977-01-13 | 1978-07-12 | Standard Telephones Cables Ltd | Radio receiver for fsk signals |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5731716B2 (fr) * | 1974-12-23 | 1982-07-06 |
-
1978
- 1978-10-24 GB GB7841679A patent/GB2032737A/en not_active Withdrawn
-
1979
- 1979-10-19 NL NL7907712A patent/NL7907712A/nl not_active Application Discontinuation
- 1979-10-19 US US06/086,542 patent/US4254503A/en not_active Expired - Lifetime
- 1979-10-20 DE DE19792942512 patent/DE2942512A1/de not_active Withdrawn
- 1979-10-24 JP JP13649979A patent/JPS5573149A/ja active Pending
- 1979-10-24 FR FR7926360A patent/FR2440124A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1048064A (en) * | 1964-05-29 | 1966-11-09 | Telefunken Patent | Improvements in or relating to frequency modulated or shifted telegraph and like receivers |
US3670242A (en) * | 1969-12-03 | 1972-06-13 | Lear Siegler Inc | A selective paging receiver and decoder employing an electronic filter means |
FR2307402A1 (fr) * | 1975-04-10 | 1976-11-05 | Int Standard Electric Corp | Recepteur de signaux multifrequences |
GB1517121A (en) * | 1977-01-13 | 1978-07-12 | Standard Telephones Cables Ltd | Radio receiver for fsk signals |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2464603A1 (fr) * | 1979-09-04 | 1981-03-06 | Int Standard Electric Corp | Recepteur de radiocommunication en modulation par deplacement de frequence |
FR2538634A1 (fr) * | 1982-12-24 | 1984-06-29 | Int Standard Electric Corp | Recepteur radio-electrique a conversion directe pour signaux modules en frequence |
Also Published As
Publication number | Publication date |
---|---|
JPS5573149A (en) | 1980-06-02 |
NL7907712A (nl) | 1980-04-28 |
GB2032737A (en) | 1980-05-08 |
FR2440124B1 (fr) | 1983-12-30 |
DE2942512A1 (de) | 1980-05-08 |
US4254503A (en) | 1981-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |