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US 5,581,153 AGranted
Electron beam tube having resonant cavity circuit with selectively adjustable coupling arrangement
AssigneeEEV Limited
InventorMark Bridges
Life of this patent
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Abstract
An electron beam tube arrangement in an inductive output tetrode. The arrangement comprises a resonant cavity circuit having two cavities, and includes an element for coupling high frequency energy between the two cavities. The coupling element includes a coupling dome projecting into one of the two cavities from a wall thereof. The coupling dome has a base portion which is adapted to be connected to a dome completion member selected from a set comprising at least one dome completion member for adjusting a coupling level between the two cavities.
Claims14
An electron beam tube arrangement comprising:
- an electron gun for emitting an electron beam for reception by a collector;
- an input means operatively associated with the electron gun for applying a high frequency input signal to interact with the electron beam thereby producing a modulated electron beam;
- a resonant cavity circuit defining a first cavity and a second cavity and disposed for allowing the modulated electron beam to pass through the first cavity;
- means operatively associated with the resonant cavity circuit for coupling high frequency energy from the first cavity to the second cavity and including a coupling dome projecting into the second cavity from a wall of the second cavity;
- means operatively associated with the second cavity for extracting high frequency output signals from the second cavity;
- and
- at least one dome completion member adapted for connection in the second cavity;
- said coupling dome including a base portion having means adapted to connect a selected dome completion member to the base portion for adjusting the coupling level between the first cavity and the second cavity.
5 more elements
Dependencies are inferred from the claim text.