GB451056A - Improvements in or relating to modulated carrier wave transmitters - Google Patents
Improvements in or relating to modulated carrier wave transmittersInfo
- Publication number
- GB451056A GB451056A GB7567/35A GB756735A GB451056A GB 451056 A GB451056 A GB 451056A GB 7567/35 A GB7567/35 A GB 7567/35A GB 756735 A GB756735 A GB 756735A GB 451056 A GB451056 A GB 451056A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lecher
- capacity
- tuned
- coil
- plates
- 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
- 239000000696 magnetic material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
Landscapes
- Road Signs Or Road Markings (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Burglar Alarm Systems (AREA)
Abstract
451,056. Modulating systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and WALDEN, H. W. W., 6, Cranhurst Road, Cricklewood, both in London. March 11, 1935, No. 7567. [Class 40 (v)] A vibrating-electron oscillator of the retarding-field type is modulated by varying a capacity in shunt with a tuned circuit. As shown, the oscillator comprises two triode valves 1, 2, with their highlypositive grids connected to a tuned Lecher system 5, 6. The cathode leads 18, 19 may also be formed as a tuned Lecher pair. The plates are connected by a choke coil 11 which has its centre-point earthed. The plates are also connected through a Lecher system 13, 14 to a dipole aerial 15 and the variable modulating-capacity 20 is connected between the Lecher wires. The capacity comprises a vibratable diaphragm or plate adjacent to a fixed plate. The movable diaphragm may be of magnetic material vibrated by signal currents passing through coils on a magnet as in a telephone ear-piece ; or a moving-coil instrument may be used and the movable condenser plate connected to the moving-coil either directly or by a lever.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7567/35A GB451056A (en) | 1935-03-11 | 1935-03-11 | Improvements in or relating to modulated carrier wave transmitters |
| US67577A US2091663A (en) | 1935-03-11 | 1936-03-07 | Ultra high frequency transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7567/35A GB451056A (en) | 1935-03-11 | 1935-03-11 | Improvements in or relating to modulated carrier wave transmitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB451056A true GB451056A (en) | 1936-07-29 |
Family
ID=9835593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7567/35A Expired GB451056A (en) | 1935-03-11 | 1935-03-11 | Improvements in or relating to modulated carrier wave transmitters |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2091663A (en) |
| GB (1) | GB451056A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2588513A (en) * | 1949-06-10 | 1952-03-11 | Rca Corp | Electrostatic high-voltage generator |
| US4593412A (en) * | 1984-05-21 | 1986-06-03 | Multi-Elmac Company | Integrated oscillator antenna for low power, low harmonic radiation |
-
1935
- 1935-03-11 GB GB7567/35A patent/GB451056A/en not_active Expired
-
1936
- 1936-03-07 US US67577A patent/US2091663A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2091663A (en) | 1937-08-31 |
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