GB516067A - Improvements in or relating to ultra high frequency systems - Google Patents
Improvements in or relating to ultra high frequency systemsInfo
- Publication number
- GB516067A GB516067A GB18199/38A GB1819938A GB516067A GB 516067 A GB516067 A GB 516067A GB 18199/38 A GB18199/38 A GB 18199/38A GB 1819938 A GB1819938 A GB 1819938A GB 516067 A GB516067 A GB 516067A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- valve
- network
- pull
- push
- 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
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000007850 degeneration Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
516,067. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 20, 1938, No. 18199. Convention date, June 19, 1937. [Class 40 (v)] In a high frequency amplifier having the anode grounded through a capacity, a network having 'characteristics to simulate the valve is provided and the signals to be amplified are applied to the valve grid and to the corresponding element of the network in push-pull and the output taken between the cathode and ground. Fig. 1 shows a circuit arranged with the network 8,9,10 forming a dummy valve and co-operating in push-pull with valve 1. The tank circuit comprises the capacity between plate 4 connected to the anode and the container 2 and a path of distributed inductance comprising the inner surface of the container 2 and the outer surface of the tube 5, tuning being effected by slides 12, 13. The input circuit 7 applies push-pull potentials to the leads 15, 16, which are tuned by strap 6. A strap 11 arranged substantially one-half of the operating wavelength along the tube tunes the leads 15, 16 in push-pull to zero impedance or to give inductive or capacitive reactance so that controllable regeneration or degeneration is obtained. Fig. 2 shows a modification in which the valve and network are placed on opposite sides of the tube 5 and within the container 2. With this arrangement filament heating is applied through the top portion of the tube and the input is applied through the lower portion of the tube. The filament is capacitively connected to the tube 5 by oppositely disposed half cylindrical plates 17 separated from the tube by mica spacers. With this arrangement the tank circuit comprises two sections connected in parallel. Fig. 3 shows an arrangement in which the leads 15, 16 are replaced by tubes 15<11>, 16<11> so that the input loop has substantially 100 per cent. coupling. A number of valves may be connected in parallel and co-operate with a single network which has a characteristic to simulate the valves, Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US149054A US2260529A (en) | 1937-06-19 | 1937-06-19 | Ultra short wave system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516067A true GB516067A (en) | 1939-12-21 |
Family
ID=22528602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18199/38A Expired GB516067A (en) | 1937-06-19 | 1938-06-20 | Improvements in or relating to ultra high frequency systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2260529A (en) |
| GB (1) | GB516067A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046994A (en) * | 1959-07-02 | 1962-07-31 | Olin Mathieson | Ventilated cigarette |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2516990A (en) * | 1942-09-14 | 1950-08-01 | Rca Corp | Ultra high frequency mixer circuits |
| US2943275A (en) * | 1957-09-09 | 1960-06-28 | Burt J Bittner | Transformer for joining unbalanced to balanced transmission means |
-
1937
- 1937-06-19 US US149054A patent/US2260529A/en not_active Expired - Lifetime
-
1938
- 1938-06-20 GB GB18199/38A patent/GB516067A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046994A (en) * | 1959-07-02 | 1962-07-31 | Olin Mathieson | Ventilated cigarette |
Also Published As
| Publication number | Publication date |
|---|---|
| US2260529A (en) | 1941-10-28 |
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