ES521380A0 - Esquema para circuito de sintonizacion en receptores de alta frecuencia provisto de circuito pll. - Google Patents
Esquema para circuito de sintonizacion en receptores de alta frecuencia provisto de circuito pll.Info
- Publication number
- ES521380A0 ES521380A0 ES521380A ES521380A ES521380A0 ES 521380 A0 ES521380 A0 ES 521380A0 ES 521380 A ES521380 A ES 521380A ES 521380 A ES521380 A ES 521380A ES 521380 A0 ES521380 A0 ES 521380A0
- Authority
- ES
- Spain
- Prior art keywords
- circuit
- scheme
- high frequency
- pll circuit
- receptors
- 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
- 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
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3215747A DE3215747C2 (de) | 1982-04-28 | 1982-04-28 | Schaltungsanordnung zum Abstimmen von Hochfrequenzempfängern mit Hilfe einer Phase-Locked-Loop-Schaltung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES8402482A1 ES8402482A1 (es) | 1984-01-16 |
| ES521380A0 true ES521380A0 (es) | 1984-01-16 |
Family
ID=6162118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES521380A Granted ES521380A0 (es) | 1982-04-28 | 1983-04-11 | Esquema para circuito de sintonizacion en receptores de alta frecuencia provisto de circuito pll. |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0092657B1 (es) |
| DE (1) | DE3215747C2 (es) |
| ES (1) | ES521380A0 (es) |
| FI (1) | FI79429C (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476583A (en) * | 1983-02-28 | 1984-10-09 | Rca Corporation | Electronic tracking for tuners |
| FR2624323B1 (fr) * | 1987-12-03 | 1994-03-25 | Institut Francais Petrole | Dispositif pour asservir un signal, en frequence et en phase, a celle d'un signal impose |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3729688A (en) * | 1971-12-15 | 1973-04-24 | Motorola Inc | Oscillator with switchable filter control voltage input for rapidly switching to discrete frequency outputs |
| GB1444860A (en) * | 1974-12-12 | 1976-08-04 | Mullard Ltd | Frequency synthesiser |
| DE2718472C2 (de) * | 1977-04-26 | 1986-05-15 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | Abstimmschaltung für einen Hochfrequenz-Überlagerungsempfänger mit gleichspannungsgesteuerter Abstimmung |
| JPS5683135A (en) * | 1979-12-10 | 1981-07-07 | Sony Corp | Pll circuit |
-
1982
- 1982-04-28 DE DE3215747A patent/DE3215747C2/de not_active Expired
-
1983
- 1983-02-24 EP EP83101803A patent/EP0092657B1/de not_active Expired
- 1983-04-11 ES ES521380A patent/ES521380A0/es active Granted
- 1983-04-12 FI FI831213A patent/FI79429C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3215747A1 (de) | 1983-11-10 |
| DE3215747C2 (de) | 1986-04-30 |
| ES8402482A1 (es) | 1984-01-16 |
| EP0092657A3 (en) | 1985-07-03 |
| FI79429B (fi) | 1989-08-31 |
| FI79429C (fi) | 1989-12-11 |
| EP0092657A2 (de) | 1983-11-02 |
| EP0092657B1 (de) | 1988-06-29 |
| FI831213L (fi) | 1983-10-29 |
| FI831213A0 (fi) | 1983-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19970930 |