GB1581360A - Frequency synthesizing circuit arrangement for a signal receiver - Google Patents
Frequency synthesizing circuit arrangement for a signal receiver Download PDFInfo
- Publication number
- GB1581360A GB1581360A GB2515677A GB2515677A GB1581360A GB 1581360 A GB1581360 A GB 1581360A GB 2515677 A GB2515677 A GB 2515677A GB 2515677 A GB2515677 A GB 2515677A GB 1581360 A GB1581360 A GB 1581360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- circuit
- input
- signal
- gate
- 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.)
- Expired
Links
- 230000002194 synthesizing effect Effects 0.000 title claims description 8
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000000872 buffer Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Superheterodyne Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT6856076A IT1071211B (it) | 1976-06-25 | 1976-06-25 | Perfezionamenti a un sintetizzatore di frequenza per un ricevitore di segnali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1581360A true GB1581360A (en) | 1980-12-10 |
Family
ID=11309845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2515677A Expired GB1581360A (en) | 1976-06-25 | 1977-06-16 | Frequency synthesizing circuit arrangement for a signal receiver |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2728599A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2356311A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1581360A (enrdf_load_stackoverflow) |
| IT (1) | IT1071211B (enrdf_load_stackoverflow) |
-
1976
- 1976-06-25 IT IT6856076A patent/IT1071211B/it active
-
1977
- 1977-06-16 GB GB2515677A patent/GB1581360A/en not_active Expired
- 1977-06-23 FR FR7719255A patent/FR2356311A1/fr active Granted
- 1977-06-24 DE DE19772728599 patent/DE2728599A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2356311B1 (enrdf_load_stackoverflow) | 1982-03-19 |
| DE2728599A1 (de) | 1977-12-29 |
| IT1071211B (it) | 1985-04-02 |
| FR2356311A1 (fr) | 1978-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19970615 |