DK409881A - Apparat til afproevning af afstemningsfrekvensen af en frekvensmoduleret radiomodtager - Google Patents
Apparat til afproevning af afstemningsfrekvensen af en frekvensmoduleret radiomodtagerInfo
- Publication number
- DK409881A DK409881A DK409881A DK409881A DK409881A DK 409881 A DK409881 A DK 409881A DK 409881 A DK409881 A DK 409881A DK 409881 A DK409881 A DK 409881A DK 409881 A DK409881 A DK 409881A
- Authority
- DK
- Denmark
- Prior art keywords
- frequency
- testing
- radio receiver
- voting
- modulated radio
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
- H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/12—Frequency diversity
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8019918A FR2490428B1 (fr) | 1980-09-16 | 1980-09-16 | Dispositif de recherche de la frequence d'accord d'un recepteur radioelectrique a modulation de frequence |
FR8019918 | 1980-09-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK409881A true DK409881A (da) | 1982-03-17 |
DK157517B DK157517B (da) | 1990-01-15 |
DK157517C DK157517C (da) | 1990-06-05 |
Family
ID=9245971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK409881A DK157517C (da) | 1980-09-16 | 1981-09-15 | Apparat til eftersoegning af modtagefrekvensen for en frekvensmoduleret radiomodtagerr |
Country Status (5)
Country | Link |
---|---|
US (1) | US4403345A (da) |
EP (1) | EP0048200B1 (da) |
DE (1) | DE3170291D1 (da) |
DK (1) | DK157517C (da) |
FR (1) | FR2490428B1 (da) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6119261A (ja) * | 1984-07-05 | 1986-01-28 | Toshiba Corp | 周波数変換回路 |
US4816769A (en) * | 1985-06-21 | 1989-03-28 | Ma John Y | BPSK demodulator and FM receiver for digital data pagers |
US4727591A (en) * | 1986-09-04 | 1988-02-23 | Arvin Industries, Inc. | Microprocessor controlled tuning system |
US5014350A (en) * | 1988-04-28 | 1991-05-07 | Sanyo Electric Co., Ltd. | Apparatus for and method of improving the AFC of a television broadcast satellite receiver |
GB9006919D0 (en) * | 1990-03-28 | 1990-05-23 | Panther Giles | Paging receiver |
JP2605606B2 (ja) * | 1993-12-06 | 1997-04-30 | 日本電気株式会社 | 列車無線通信システム |
US5678223A (en) * | 1995-03-07 | 1997-10-14 | Motorola, Inc. | Method and apparatus for an automatic frequency control receiver |
FR2755516B1 (fr) | 1996-11-05 | 1999-01-22 | Thomson Csf | Dispositif compact d'illumination |
FR2819061B1 (fr) * | 2000-12-28 | 2003-04-11 | Thomson Csf | Dispositif de controle de polarisation dans une liaison optique |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3486118A (en) * | 1966-12-28 | 1969-12-23 | Aerojet General Co | Fm sweep signal detection and signal quality evaluation circuit |
DE2424613C3 (de) * | 1974-05-21 | 1979-07-05 | Texas Instruments Deutschland Gmbh, 8050 Freising | Schaltungsanordnung zur automatischen Feinabstimmung eines Überlagerungsempfängers |
SE7512401L (sv) * | 1974-11-07 | 1976-05-10 | Decca Ltd | Dempsats for antenner |
US4197500A (en) * | 1976-11-01 | 1980-04-08 | The United States Of America As Represented By The Secretary Of The Army | Automatic channel selection |
FR2383560A1 (fr) * | 1977-03-09 | 1978-10-06 | Trt Telecom Radio Electr | Dispositif de commande de recherche de frequence dans un recepteur radioelectrique mobile par rapport a des stations emettrices |
NL179435C (nl) * | 1977-10-26 | 1986-09-01 | Philips Nv | Ontvanger met een frequentiesynthese-schakeling. |
DE2840533A1 (de) * | 1978-09-18 | 1980-03-27 | Hans Ing Grad Wellhausen | Rundfunk- oder fernsehempfaenger |
US4348772A (en) * | 1979-11-26 | 1982-09-07 | Bell Telephone Laboratories, Incorporated | Frequency stabilization circuit for a local oscillator |
-
1980
- 1980-09-16 FR FR8019918A patent/FR2490428B1/fr not_active Expired
-
1981
- 1981-09-08 DE DE8181401399T patent/DE3170291D1/de not_active Expired
- 1981-09-08 EP EP81401399A patent/EP0048200B1/fr not_active Expired
- 1981-09-15 DK DK409881A patent/DK157517C/da not_active IP Right Cessation
- 1981-09-15 US US06/302,675 patent/US4403345A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DK157517C (da) | 1990-06-05 |
US4403345A (en) | 1983-09-06 |
FR2490428B1 (fr) | 1986-04-18 |
DE3170291D1 (en) | 1985-06-05 |
EP0048200B1 (fr) | 1985-05-02 |
EP0048200A1 (fr) | 1982-03-24 |
FR2490428A1 (fr) | 1982-03-19 |
DK157517B (da) | 1990-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2960909D1 (en) | Method of aligning a radio receiver and means for indicating the alignment of a radio receiver | |
DK147726C (da) | Apparat til afproevning af hoerelsen | |
DK305177A (da) | Radioimmunologisk fremgangsmaade og apparat til bestemmelse af antigener | |
ES494757A0 (es) | Un receptor de radio para senales fsk | |
SE7609324L (sv) | Mottagare for radiosignaler | |
DK0454266T3 (da) | Modtager med en indretning til vurdering af frekvensafvigelse | |
DK506078A (da) | Digitalt styret signalsimulator navnlig til afproevning af radarmodtagere | |
DK372779A (da) | Apparat til gengivelse af informationssignaler | |
DK233781A (da) | Fremgangsmaade og apparat til samtidig udsendelse af informationer paa samme frekvens over flere sendere | |
DK409881A (da) | Apparat til afproevning af afstemningsfrekvensen af en frekvensmoduleret radiomodtager | |
DK151718C (da) | Samlejern og fremgangsmaade og apparat til fremstilling af en saadan. | |
DK124280A (da) | Fremgangsmaade og apparat til synkronisering af en modtager til demodulering af et kvadrufasekodet datasignal | |
DK555378A (da) | R fremgangsmaade og kobling til overvaagning af en radiomodtage | |
DK159342C (da) | Apparat til overvaagning af en fremkalder i en elektrofotografisk fremkalderstation | |
DK375475A (da) | Apparat til overforing af hojfrekvenssignaler | |
BR7701801A (pt) | Receptor de radio de amplitude modulada | |
ES534134A0 (es) | Dispositivo de sintonizacion de radiofrecuencia | |
DK534777A (da) | Taellekobling til bestemmelse af modtagefrekvensen subsidiaert modtagekanalen i en superheterodynmodtager | |
DK215781A (da) | Radiomodtager | |
DK500976A (da) | Afstemningskobling til hojfrekvensmodtagere | |
DK497688A (da) | Apparat til forhindring af spektrumidvidelse ved til- og frakobling af en radiosender | |
DK152634C (da) | Digitalt afstemningssystem til et radiomodtagerapparat | |
JPS52100807A (en) | Tuning device for superheterodyne receiver | |
SE8107173L (sv) | Flerstationsmottagare | |
SE422133B (sv) | Avstemningsanordning for en radio- eller televisionsmottagare |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |