GB1101648A - Improvements in or relating to tuning arrangements for radio receivers - Google Patents
Improvements in or relating to tuning arrangements for radio receiversInfo
- Publication number
- GB1101648A GB1101648A GB716465A GB716465A GB1101648A GB 1101648 A GB1101648 A GB 1101648A GB 716465 A GB716465 A GB 716465A GB 716465 A GB716465 A GB 716465A GB 1101648 A GB1101648 A GB 1101648A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductor
- transistor
- circuit
- line
- resonant
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/06—Transference of modulation using distributed inductance and capacitance
- H03D9/0658—Transference of modulation using distributed inductance and capacitance by means of semiconductor devices having more than two electrodes
- H03D9/0666—Transference of modulation using distributed inductance and capacitance by means of semiconductor devices having more than two electrodes using bipolar transistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Filters And Equalizers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
1,101,648. Circuit assemblies; resonant cavities. TELEFUNKEN PATENTVER. WERTUNG G.m.b.H. 19 Feb., 1965 [11 March, 1964], No. 7164/65. Headings H1R and H1W. [Also in Division H3] A resonant circuit construction comprises inner and outer conductors, one end of the former being connected to a variable capacitor, the junction point being connected (a) to an input terminal via a coiled inductor whose axis is parallel to the inner conductor and (b) to a transistor via a second coiled inductor whose axis is perpendicular to the inner conductor. Fig. 2 shows such a construction in the input circuit of a U.H.F. receiver, the aerial feeder 4 being joined via the parallel inductor 3 to one end of a resonant line 1, the output being taken through the perpendicular inductor 6 to the transistor 7. To reduce stray capacitance the inductor 3 is located opposite the centre of the line 1. The line conductor 1 may be formed as a printed circuit. A blocking capacitor 5 in the form of a disc is effectively in circuit between the inductor 6 and the line. The output from transistor 7 is applied to a band-pass filter in chambers 15, 16 and thence to a selfoscillating mixer transistor 22. Coupling is via a loop 21 which has single-turn spiral windings at its comers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET25792A DE1214750B (en) | 1964-03-11 | 1964-03-11 | Input circuit for receiver for high-frequency electrical oscillations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1101648A true GB1101648A (en) | 1968-01-31 |
Family
ID=7552308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB716465A Expired GB1101648A (en) | 1964-03-11 | 1965-02-19 | Improvements in or relating to tuning arrangements for radio receivers |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1214750B (en) |
| GB (1) | GB1101648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2167244A (en) * | 1984-11-16 | 1986-05-21 | Int Standard Electric Corp | Variable capacitor and band pass filter including a variable capacitor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB494319A (en) * | 1936-01-16 | 1938-10-24 | Gen Motors Corp | Radio antenna systems |
| DE705582C (en) * | 1936-07-18 | 1941-05-03 | Telefunken Gmbh | Reception system with a double line between antenna and receiver |
| FR835011A (en) * | 1937-03-09 | 1938-12-09 | Philips Nv | Improvements to high frequency modulated electrical oscillations receivers and in particular to t receivers. s. f. for vehicles |
| FR1170409A (en) * | 1957-03-29 | 1959-01-14 | Cie De Television | Improved coupling of a frame wave collector with very low input impedance, in particular that of a transistor amplifier stage |
| FR1211793A (en) * | 1958-10-09 | 1960-03-18 | Visodion Soc | Advanced training in wave collecting devices |
-
1964
- 1964-03-11 DE DET25792A patent/DE1214750B/en active Pending
-
1965
- 1965-02-19 GB GB716465A patent/GB1101648A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2167244A (en) * | 1984-11-16 | 1986-05-21 | Int Standard Electric Corp | Variable capacitor and band pass filter including a variable capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1214750B (en) | 1966-04-21 |
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