FR2397757A1 - Appareil de reception de signaux dans plusieurs bandes de frequence - Google Patents
Appareil de reception de signaux dans plusieurs bandes de frequenceInfo
- Publication number
- FR2397757A1 FR2397757A1 FR7820916A FR7820916A FR2397757A1 FR 2397757 A1 FR2397757 A1 FR 2397757A1 FR 7820916 A FR7820916 A FR 7820916A FR 7820916 A FR7820916 A FR 7820916A FR 2397757 A1 FR2397757 A1 FR 2397757A1
- Authority
- FR
- France
- Prior art keywords
- stage
- preamplifier
- frequency bands
- receiving signals
- multiple frequency
- 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
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D5/00—Circuits for demodulating amplitude-modulated or angle-modulated oscillations at will
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
- H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Abstract
L'invention concerne les récepteurs de radio à plusieurs gammes d'ondes. Le récepteur comprend un canal de réception d'ondes modulées en amplitude constitué d'un préamplificateur 1, d'un étage de fréquence intermédiaire 2 et d'un détecteur 3, ainsi qu'un canal de traitement de modulation de fréquence constitué d'un préamplificateur 4, d'un étage de fréquence intermédiaire 5 et d'un étage de multiplexage 6. Une sortie 10L, 10R, peut être sélectivement connectée à l'un ou l'autre canal par un commutateur 9 commandé par un circuit de différenciation 11, un multivibrateur monostable 12, un circuit de commande 13, un diviseur de fréquence programmable 30 et un bouton d'accord 30. Les influences mutuelles entre canaux sont éliminées.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52082612A JPS6032369B2 (ja) | 1977-07-12 | 1977-07-12 | 多重バンドラジオ受信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2397757A1 true FR2397757A1 (fr) | 1979-02-09 |
FR2397757B1 FR2397757B1 (fr) | 1983-01-07 |
Family
ID=13779287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7820916A Granted FR2397757A1 (fr) | 1977-07-12 | 1978-07-12 | Appareil de reception de signaux dans plusieurs bandes de frequence |
Country Status (8)
Country | Link |
---|---|
US (1) | US4181890A (fr) |
JP (1) | JPS6032369B2 (fr) |
AU (1) | AU518001B2 (fr) |
CA (1) | CA1112724A (fr) |
DE (1) | DE2830668A1 (fr) |
FR (1) | FR2397757A1 (fr) |
GB (1) | GB2001496A (fr) |
NL (1) | NL189840C (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS627226A (ja) * | 1985-07-04 | 1987-01-14 | Nec Corp | 共通予備切替方式 |
JPS63242030A (ja) * | 1987-03-30 | 1988-10-07 | Toshiba Corp | 広帯域周波数シンセサイザ受信機 |
US6373398B2 (en) * | 1997-06-10 | 2002-04-16 | Kabushiki Kaisha Toshiba | Automobile tuner system |
US6195535B1 (en) * | 1998-09-04 | 2001-02-27 | Lucent Technologies Inc. | High power wireless telephone with over-voltage protection disabling circuit |
US7182992B2 (en) * | 2004-02-17 | 2007-02-27 | 3M Innovative Properties Company | Hook fiber |
US8712717B2 (en) * | 2005-09-30 | 2014-04-29 | Hewlett-Packard Development Company, L.P. | Computer device with digitizer calibration system and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745467A (en) * | 1971-09-10 | 1973-07-10 | Motorola Inc | Multi-band radio receiver |
FR2234715A1 (fr) * | 1973-06-19 | 1975-01-17 | Sony Corp |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3206679A (en) * | 1963-01-10 | 1965-09-14 | Being Company | Diversity combining system employing differential sampling |
JPS5148616B1 (fr) * | 1971-05-31 | 1976-12-22 | ||
CA948727A (en) * | 1972-04-07 | 1974-06-04 | Michael W. Mclernon | Signal receiver with a plurality of tuners and automatic switching system for cyclically energizing the same |
-
1977
- 1977-07-12 JP JP52082612A patent/JPS6032369B2/ja not_active Expired
-
1978
- 1978-07-11 CA CA307,169A patent/CA1112724A/fr not_active Expired
- 1978-07-11 US US05/923,621 patent/US4181890A/en not_active Expired - Lifetime
- 1978-07-11 GB GB787829324A patent/GB2001496A/en not_active Withdrawn
- 1978-07-12 DE DE19782830668 patent/DE2830668A1/de active Granted
- 1978-07-12 AU AU37955/78A patent/AU518001B2/en not_active Expired
- 1978-07-12 NL NLAANVRAGE7807501,A patent/NL189840C/xx not_active IP Right Cessation
- 1978-07-12 FR FR7820916A patent/FR2397757A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745467A (en) * | 1971-09-10 | 1973-07-10 | Motorola Inc | Multi-band radio receiver |
FR2234715A1 (fr) * | 1973-06-19 | 1975-01-17 | Sony Corp |
Also Published As
Publication number | Publication date |
---|---|
DE2830668C2 (fr) | 1988-07-07 |
AU3795578A (en) | 1980-01-17 |
NL189840C (nl) | 1993-08-02 |
US4181890A (en) | 1980-01-01 |
CA1112724A (fr) | 1981-11-17 |
NL7807501A (nl) | 1979-01-16 |
NL189840B (nl) | 1993-03-01 |
FR2397757B1 (fr) | 1983-01-07 |
DE2830668A1 (de) | 1979-02-15 |
AU518001B2 (en) | 1981-09-10 |
JPS6032369B2 (ja) | 1985-07-27 |
GB2001496A (en) | 1979-01-31 |
JPS5418201A (en) | 1979-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |