Clover-Shaped Resonator Mode Separation
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Solution Overview
Problem
High Q mode resonators are masked by lower Q modes at the same frequency of resonance, and existing methods to separate them disturb the high Q mode, reducing its quality factor (Q) by inserting a probe that alters the resonator's fields.
Innovation Solution
A clover-shaped resonating cavity with a dielectric material and a method that shifts the low Q mode's resonance frequency higher than the high Q mode's, allowing for the separation of frequencies and maintaining the high Q mode's symmetry and quality factor, using a housing with a clover-shaped cavity and a fluid dielectric material, and adjusting the dimensions of the cylindrical cavity to achieve this separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a probe is inserted into the resonator to separate high Q mode from low Q modes, then the modes are separated, but the high Q mode's quality factor is reduced due to field disturbance
Solution Approach 1:
The patent introduces a dielectric member as an intermediary element placed within the resonator cavity. This dielectric member selectively interacts with the low Q mode to shift its frequency without significantly affecting the high Q mode, thereby achieving mode separation while preserving the quality factor of the high Q mode
Solution Approach 2:
The patent changes the physical parameters of the resonator system by introducing a dielectric member with specific properties (permittivity, position, dimensions). This parameter change selectively affects the low Q mode's resonance frequency, causing it to shift away from the high Q mode frequency, thus resolving the contradiction between mode separation and quality factor preservation
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
Effectively separates the high Q mode from lower Q modes without disturbing the high Q mode's fields, allowing for further filtering and maintaining its high quality factor, as demonstrated by the separation of TE011 and TM111 modes.
Implementation Method 1
a dielectric material filling the cavity
Implementation Method 2
resonating the signal within a chamber, the resonating cavity shifting the resonance of the low Q mode higher in frequency than it shifts the high Q mode
Data Source
AI summary
The present disclosed technique pertains to high Q mode resonators, and, more particularly, to a technique for separating a high Q mode from masking low Q modes. In a first aspect, it includes a high Q mode resonator, comprising: a housing defining a clover-shaped resonating cavity; a dielectric material filling the cavity; an input to the cavity; and an output from the cavity. In a second aspect, it includes a high Q mode resonator, comprising: a housing defining a clover-shaped resonating cavity, the cavity comprising four intersecting right angle, cylindrical chambers; a fluid dielectric material filling the cavity; an input to the cavity; and an output from the cavity. In a third aspect, it includes a method, comprising: introducing a signal to a resonating cavity; resonating the signal within a chamber, the resonating cavity shifting the resonance of the low Q mode higher in frequency than it shifts the high Q mode; and permitting egress of the signal from the resonating cavity. In a fourth aspect, it includes a method for use in designing a high Q mode resonator, comprising: calculating the dimensions of the simple cylindrical cavity for the frequency desired for the high Q mode; and decreasing the outer radius of the simple cylindrical cavity while holding the sum of the inner and outer radius equal to the initial simple cylindrical radius.