Microwave Adaptor for Solid-State Oscillator Impedance Matching
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Solution Overview
Problem
Magnetrons used in microwave applications require high voltage and have limited lifetime, leading to output power degradation over time, necessitating alternative sources for microwave energy.
Innovation Solution
A solid-state oscillator system with a resonant circuit and microwave adaptor that uses an amplifier arrangement with arcuate inductive elements and capacitive coupling to generate and translate microwave signals, matching impedance between the oscillator and waveguide to produce efficient microwave energy without a magnetron.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If magnetrons are used to generate microwaves, then microwave energy can be produced, but high voltage (4 kilovolts or more) is required and lifetime is limited with output power degradation
Solution Approach 1:
The patent replaces the magnetron (a vacuum tube device requiring high voltage) with a solid-state oscillator system comprising amplifiers, resonant circuits, and microwave adaptors. This substitution eliminates the need for high voltage operation while maintaining microwave generation capability, thereby improving reliability and eliminating output power degradation over time.
2Power
If magnetrons are used, then microwave generation is achieved, but relatively high voltage power source is required
Solution Approach 1:
The solid-state oscillator system replaces the magnetron's high voltage electron beam mechanism with low-voltage solid-state amplifiers and resonant circuits. The system uses standard low voltage power sources to drive the amplifiers, which generate microwaves through resonant oscillation rather than high voltage electron acceleration.
3Power
If conventional magnetron systems are used, then microwave output is produced, but power transfer efficiency to waveguide is limited
Solution Approach 1:
The patent introduces microwave adaptors as intermediary components that couple the solid-state oscillator to the waveguide. These adaptors include impedance matching networks and resonant structures that efficiently transfer power from the oscillator to the waveguide, minimizing energy loss and improving overall system efficiency.
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
The system produces microwave signals with equivalent output power to conventional magnetrons at lower voltage, improving power transfer and forward transmission of electromagnetic waves, thus extending the system's operational life and efficiency.
Implementation Method 1
a resonant circuit including a pair of arcuate inductive elements that oppose one another to provide an annular structure... the resonant circuitry is configured to provide a resonant frequency
Implementation Method 2
an antenna portion at an end of the one or more coaxial portions... the antenna portion electrically couples the inner conductor to the outer shielding segment of the last coaxial portion to radiate electromagnetic signals
Data Source
AI summary
An adaptor for a solid-state oscillator and related microwave adaptors includes an input segment of a conductive material, a first coaxial portion that includes a first inner conductor coupled to the input segment and a first outer shielding segment, and a capping portion coupled to the first coaxial portion to electrically couple the first inner conductor and the first outer shielding segment.