DE2748321A1 - Abstimmeinrichtung fuer hochfrequenzempfaenger - Google Patents
Abstimmeinrichtung fuer hochfrequenzempfaengerInfo
- Publication number
- DE2748321A1 DE2748321A1 DE19772748321 DE2748321A DE2748321A1 DE 2748321 A1 DE2748321 A1 DE 2748321A1 DE 19772748321 DE19772748321 DE 19772748321 DE 2748321 A DE2748321 A DE 2748321A DE 2748321 A1 DE2748321 A1 DE 2748321A1
- Authority
- DE
- Germany
- Prior art keywords
- signal
- counter
- frequency
- arrangement according
- counting
- 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.)
- Ceased
Links
- 239000000969 carrier Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035559 beat frequency Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
-
- 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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44661/76A GB1590444A (en) | 1976-10-27 | 1976-10-27 | Phase locked loop tuning system with preset tuning |
| US05/790,863 US4097810A (en) | 1976-10-27 | 1977-04-26 | Phase locked loop tuning system with a preset channel memory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2748321A1 true DE2748321A1 (de) | 1978-05-03 |
Family
ID=26265434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772748321 Ceased DE2748321A1 (de) | 1976-10-27 | 1977-10-27 | Abstimmeinrichtung fuer hochfrequenzempfaenger |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5354406A (enrdf_load_stackoverflow) |
| AU (1) | AU515265B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1096519A (enrdf_load_stackoverflow) |
| DE (1) | DE2748321A1 (enrdf_load_stackoverflow) |
| FI (1) | FI773122A7 (enrdf_load_stackoverflow) |
| FR (1) | FR2371822A1 (enrdf_load_stackoverflow) |
| SE (1) | SE422133B (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919994A1 (de) * | 1979-05-17 | 1980-11-20 | Matsushita Electric Ind Co Ltd | Verfahren zum synthetisieren eines frequenzsignals und digitaler frequenz- synthetisierer zur durchfuehrung des verfahrens |
| EP0240934A3 (en) * | 1986-04-08 | 1989-07-26 | Przemyslowy Instytut Telekomunikacji | Digital frequency synthesizer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182994A (en) * | 1977-08-22 | 1980-01-08 | Rca Corporation | Phase locked loop tuning system including stabilized time interval control circuit |
| JPS5890831A (ja) * | 1982-11-22 | 1983-05-30 | Nec Corp | Ｆｍラジオ受信機 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1961329B2 (de) * | 1969-12-06 | 1972-06-22 | Fa Wandel u Goltermann, 7410 Reut lingen | Digital einstellbarer frequenzgeregelter schwingungserzeuger |
| DE2512738C2 (de) * | 1975-03-22 | 1982-03-25 | Robert Bosch Gmbh, 7000 Stuttgart | Frequenzregler |
-
1977
- 1977-10-14 CA CA288,806A patent/CA1096519A/en not_active Expired
- 1977-10-20 FI FI773122A patent/FI773122A7/fi not_active Application Discontinuation
- 1977-10-20 SE SE7711846A patent/SE422133B/xx unknown
- 1977-10-21 AU AU29946/77A patent/AU515265B2/en not_active Expired
- 1977-10-25 FR FR7732112A patent/FR2371822A1/fr active Granted
- 1977-10-26 JP JP12916077A patent/JPS5354406A/ja active Granted
- 1977-10-27 DE DE19772748321 patent/DE2748321A1/de not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919994A1 (de) * | 1979-05-17 | 1980-11-20 | Matsushita Electric Ind Co Ltd | Verfahren zum synthetisieren eines frequenzsignals und digitaler frequenz- synthetisierer zur durchfuehrung des verfahrens |
| EP0240934A3 (en) * | 1986-04-08 | 1989-07-26 | Przemyslowy Instytut Telekomunikacji | Digital frequency synthesizer |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2994677A (en) | 1979-04-26 |
| AU515265B2 (en) | 1981-03-26 |
| SE7711846L (sv) | 1978-04-28 |
| SE422133B (sv) | 1982-02-15 |
| FR2371822B1 (enrdf_load_stackoverflow) | 1982-01-29 |
| JPS5354406A (en) | 1978-05-17 |
| JPS5718378B2 (enrdf_load_stackoverflow) | 1982-04-16 |
| FR2371822A1 (en) | 1978-06-16 |
| FI773122A7 (fi) | 1978-04-28 |
| CA1096519A (en) | 1981-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8131 | Rejection |