Microwave Generator Axial High Voltage Source Design
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Solution Overview
Problem
Existing microwave generators with laterally parallel high voltage sources suffer from reduced dielectric strength, which can lead to interference with radio communication and potential damage to electronic circuits due to the wide-band microwave spectrum generated.
Innovation Solution
The microwave generator is designed with an axially linear arrangement of the high voltage source and a resonator spark gap integrated into the feed, allowing for a cylindrical bar-shaped structure without compromising dielectric strength, using a coaxial feed for pulsed high voltage and filling the interior with a gaseous or liquid dielectric.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a laterally parallel arrangement of high voltage source and microwave generator is used, then the structural layout is simplified, but the dielectric strength is reduced leading to interference with radio communication and potential damage to electronic circuits
Solution Approach 1:
The patent transitions from a lateral parallel arrangement to an axial linear arrangement, changing the spatial dimension of the high voltage source relative to the microwave generator. This dimensional reconfiguration allows the high voltage source to be positioned at the rear end of the resonator along the central axis, thereby maintaining optimal dielectric strength while achieving a compact cylindrical structure.
2Shape
If an axial linear arrangement of high voltage source and microwave generator is implemented, then a compact cylindrical structure is achieved, but the dielectric strength may be compromised
Solution Approach 1:
The patent employs a nested configuration where the central electrode and external electrode are coaxially arranged with the high voltage source positioned at the rear end. The resonator portion is nested within the housing, and the dielectric material fills the interior space between electrodes, creating a compact cylindrical structure that maintains optimal dielectric strength through proper spatial nesting of components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration maintains high dielectric strength, reducing interference and ensuring the structural integrity of electronic circuits while allowing for efficient microwave generation.
Implementation Method 1
a high voltage source being short-circuited across a spark gap and thus discharged
Implementation Method 2
radiation of microwaves
Implementation Method 3
The interior of the housing sleeve, apart from the two electrodes, does not contain any further parts and components, which could adversely affect high voltage dielectric strength
Data Source
AI summary
A microwave generator having a central electrode (14) which at the front end has a radiating element (22) and an external electrode (18) which coaxially surrounds the central electrode (14) along an axially extending resonator portion (16), wherein the two electrodes (14 and 18) are of a rotationally symmetrical configuration and define a spark gap (62) which sparks across when a high voltage is applied and radiates microwaves by way of the resonator portion (16) and the radiating element (22) of the central electrode (14). The spark gap (62) is in the form of an annular spark gap, which is determined by a connection element (26) which projects at the rear end axially centrally away from the central electrode (14) and an annular edge (44) of the external electrode (18), the edge being provided coaxially with respect to the connection element (26). The central electrode (14) and the external electrode (18) are arranged in a housing sleeve (12) of an electrically insulating material. The housing sleeve (12) preferably has an extension (58) defining a space (56) in which there is arranged a high voltage source (30), which is electrically conductively connected to the electrodes (14 and 18) of the microwave generator (10)