GB1095605A - Improvements in or relating to frequency modulating circuit arrangements - Google Patents
Improvements in or relating to frequency modulating circuit arrangementsInfo
- Publication number
- GB1095605A GB1095605A GB1417766A GB1417766A GB1095605A GB 1095605 A GB1095605 A GB 1095605A GB 1417766 A GB1417766 A GB 1417766A GB 1417766 A GB1417766 A GB 1417766A GB 1095605 A GB1095605 A GB 1095605A
- Authority
- GB
- United Kingdom
- Prior art keywords
- branch
- capacitors
- relating
- capacitance
- frequency modulating
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
Landscapes
- Filters And Equalizers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
1,095,605. Frequency modulation. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. March 30, 1966 [April 24, 1965], No. 14177/66. Heading H3R. A tuned circuit comprises an inductance 1 in parallel with two capacitance branches 3 and 5, each of the capacitance branches comprising an even number of voltage variable capacitors (e.g. diodes), tuning means being connected to terminal 4 for varying the capacitance of all the capacitors 3 in the first branch and half of those in the second branch 5a, and frequency modulating means are connected to terminal 6 for varying the other half of the capacitors 5b in the second branch. The frequency sweep produced by a given modulating voltage remains substantially the same over the whole range of tuning.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1965T0028452 DE1265238B (en) | 1965-04-24 | 1965-04-24 | Parallel resonant circuit for a frequency modulation device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1095605A true GB1095605A (en) | 1967-12-20 |
Family
ID=7554181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1417766A Expired GB1095605A (en) | 1965-04-24 | 1966-03-30 | Improvements in or relating to frequency modulating circuit arrangements |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1265238B (en) |
GB (1) | GB1095605A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120886A (en) * | 1982-05-24 | 1983-12-07 | Rca Corp | A resonant circuit and/or oscillator |
GB2408400A (en) * | 2003-11-24 | 2005-05-25 | Zarlink Semiconductor Ltd | A varactor circuit with a linearised capacitance vs. control voltage characteristic |
US7102437B2 (en) | 2003-10-01 | 2006-09-05 | Zarlink Semiconductor Limited | Integrated circuit device |
US7187247B2 (en) | 2003-11-24 | 2007-03-06 | Intel Corporation | Variable capacitance circuit arrangement |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3211803C2 (en) * | 1982-03-30 | 1987-03-12 | Siemens AG, 1000 Berlin und 8000 München | Electronically tunable or modulable resonance circuit |
US4503402A (en) * | 1982-08-19 | 1985-03-05 | General Electric Company | Voltage controlled oscillator having approximately constant modulation sensitivity |
-
1965
- 1965-04-24 DE DE1965T0028452 patent/DE1265238B/en active Pending
-
1966
- 1966-03-30 GB GB1417766A patent/GB1095605A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120886A (en) * | 1982-05-24 | 1983-12-07 | Rca Corp | A resonant circuit and/or oscillator |
US4494081A (en) * | 1982-05-24 | 1985-01-15 | Rca Corporation | Variable frequency U. H. F. local oscillator for a television receiver |
US7102437B2 (en) | 2003-10-01 | 2006-09-05 | Zarlink Semiconductor Limited | Integrated circuit device |
GB2408400A (en) * | 2003-11-24 | 2005-05-25 | Zarlink Semiconductor Ltd | A varactor circuit with a linearised capacitance vs. control voltage characteristic |
GB2408400B (en) * | 2003-11-24 | 2006-05-03 | Zarlink Semiconductor Ltd | A circuit arrangement |
US7187247B2 (en) | 2003-11-24 | 2007-03-06 | Intel Corporation | Variable capacitance circuit arrangement |
US7209016B2 (en) | 2003-11-24 | 2007-04-24 | Intel Corporation | Variable capacitance circuit arrangement |
US7358825B2 (en) | 2003-11-24 | 2008-04-15 | Intel Corporation | Variable capacitance circuit arrangement |
US7358824B2 (en) | 2003-11-24 | 2008-04-15 | Intel Corporation | Variable capacitance circuit arrangement |
US7411469B2 (en) | 2003-11-24 | 2008-08-12 | Intel Corporation | Circuit arrangement |
Also Published As
Publication number | Publication date |
---|---|
DE1265238B (en) | 1968-04-04 |
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