BE643466A - - Google Patents
Info
- Publication number
- BE643466A BE643466A BE643466DA BE643466A BE 643466 A BE643466 A BE 643466A BE 643466D A BE643466D A BE 643466DA BE 643466 A BE643466 A BE 643466A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- 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
- H03J7/065—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 the counter or frequency divider being used in a phase locked 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
- 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
- H03J7/08—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 varactors, i.e. voltage variable reactive diodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US256989A US3249876A (en) | 1963-02-07 | 1963-02-07 | Precision tracking of electrically tuned circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE643466A true BE643466A (it) | 1964-08-06 |
Family
ID=22974439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE643466D BE643466A (it) | 1963-02-07 | 1964-02-06 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3249876A (it) |
| BE (1) | BE643466A (it) |
| DE (1) | DE1541383A1 (it) |
| GB (1) | GB1056701A (it) |
| NL (1) | NL6400992A (it) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519939A (en) * | 1965-09-21 | 1970-07-07 | Matsushita Electric Ind Co Ltd | Automatic tuning receiver with detuning means |
| US3375463A (en) * | 1965-12-17 | 1968-03-26 | Astrodata Inc | Loop filter for phase locked loop frequency detector |
| DE1516787B1 (de) * | 1966-04-01 | 1969-10-16 | Philips Patentverwaltung | Sinusoszillator mit linearer Abhaengigkeit der Frequenz- oder Periodendauer von nur einem passiven Element |
| US3434057A (en) * | 1966-05-02 | 1969-03-18 | Sylvania Electric Prod | Automatic locking receiver |
| US3440544A (en) * | 1966-11-01 | 1969-04-22 | Motorola Inc | Manual,automatic,and semiautomatic tuning circuits utilizing voltage variable capacitance diodes |
| US3496473A (en) * | 1966-11-14 | 1970-02-17 | Gen Dynamics Corp | Automatically tuned communications systems |
| CH532280A (fr) * | 1969-08-12 | 1972-09-15 | Longines Montres Comp D | Montre électronique |
| US3657654A (en) * | 1969-09-11 | 1972-04-18 | Gen Instrument Corp | Communications receiver employing varactor controlled tuning stages |
| US3662278A (en) * | 1970-09-16 | 1972-05-09 | Us Navy | Automatic phase control circuit for tv system |
| US3727139A (en) * | 1971-08-10 | 1973-04-10 | Philco Ford Corp | Voltage supply for voltage variable capacitor diode tuning |
| US3961285A (en) * | 1971-09-23 | 1976-06-01 | International Telephone And Telegraph Corporation | Voltage controlled oscillator driver |
| US3987400A (en) * | 1974-11-04 | 1976-10-19 | Masco Corporation Of Indiana | Multiband scanning radio receiver |
| US4268915A (en) * | 1975-06-02 | 1981-05-19 | Motorola, Inc. | Universal automotive electronic radio with display for tuning or time information |
| US4135158A (en) * | 1975-06-02 | 1979-01-16 | Motorola, Inc. | Universal automotive electronic radio |
| US4135157A (en) * | 1977-03-28 | 1979-01-16 | Oak Industries Inc. | Pole mounted converter |
| US4384365A (en) * | 1978-10-16 | 1983-05-17 | Licentia Patent-Verwaltungs-G.M.B.H. | Superheterodyne receiver frequency tracking circuit |
| GB2071452B (en) * | 1980-02-11 | 1984-04-04 | Decca Ltd | Adjustable and selective electrical filters and methods oftuning them |
| JPS6318711A (ja) * | 1986-07-10 | 1988-01-26 | Toko Inc | 電子同調受信機 |
| GB2224406A (en) * | 1988-10-21 | 1990-05-02 | Philips Electronic Associated | Filter circuit arrangement |
| US5926752A (en) * | 1998-01-15 | 1999-07-20 | Trw Inc. | Apparatus and method for remote convenience message transmission and control with a tunable filter receiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2958768A (en) * | 1958-11-03 | 1960-11-01 | Avco Mfg Corp | Electronic servo system for frequency control |
| US3029339A (en) * | 1959-01-26 | 1962-04-10 | Rca Corp | Variable tuning circuit |
-
1963
- 1963-02-07 US US256989A patent/US3249876A/en not_active Expired - Lifetime
-
1964
- 1964-02-05 GB GB4845/64A patent/GB1056701A/en not_active Expired
- 1964-02-06 NL NL6400992A patent/NL6400992A/xx unknown
- 1964-02-06 BE BE643466D patent/BE643466A/xx unknown
- 1964-02-06 DE DE19641541383 patent/DE1541383A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1056701A (en) | 1967-01-25 |
| NL6400992A (it) | 1964-08-10 |
| DE1541383A1 (de) | 1969-09-11 |
| US3249876A (en) | 1966-05-03 |