JPS5296857A - Electric signal generator - Google Patents
Electric signal generatorInfo
- Publication number
- JPS5296857A JPS5296857A JP14827176A JP14827176A JPS5296857A JP S5296857 A JPS5296857 A JP S5296857A JP 14827176 A JP14827176 A JP 14827176A JP 14827176 A JP14827176 A JP 14827176A JP S5296857 A JPS5296857 A JP S5296857A
- Authority
- JP
- Japan
- Prior art keywords
- signal generator
- electric signal
- generator
- electric
- signal
- 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.)
- Pending
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
- 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
- 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)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5037975A GB1528814A (en) | 1975-12-09 | 1975-12-09 | Electrical signal generators |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5296857A true JPS5296857A (en) | 1977-08-15 |
Family
ID=10455703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14827176A Pending JPS5296857A (en) | 1975-12-09 | 1976-12-09 | Electric signal generator |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5296857A (en) |
DE (1) | DE2655138A1 (en) |
FR (1) | FR2335094A1 (en) |
GB (1) | GB1528814A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8608303D0 (en) * | 1986-04-04 | 1986-05-08 | Plessey Co Plc | Frequency synthesiser |
JPS63503427A (en) * | 1986-04-04 | 1988-12-08 | プレツシー オーバーシーズ リミテツド | frequency synthesizer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3023371A (en) * | 1958-03-07 | 1962-02-27 | Thompson Ramo Wooldridge Inc | Precision variable frequency generator |
DE1591814C3 (en) * | 1967-09-13 | 1982-03-18 | Wandel & Goltermann Gmbh & Co, 7412 Eningen | Frequency decade generator |
DE1932764B2 (en) * | 1969-06-27 | 1970-12-17 | Siemens Ag | Circuit for the optional quasi-continuous tuning of a decadic frequency synthesizer |
-
1975
- 1975-12-09 GB GB5037975A patent/GB1528814A/en not_active Expired
-
1976
- 1976-12-06 FR FR7636697A patent/FR2335094A1/en active Granted
- 1976-12-06 DE DE19762655138 patent/DE2655138A1/en not_active Ceased
- 1976-12-09 JP JP14827176A patent/JPS5296857A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2335094A1 (en) | 1977-07-08 |
GB1528814A (en) | 1978-10-18 |
FR2335094B1 (en) | 1982-01-08 |
DE2655138A1 (en) | 1977-06-23 |
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