Electro-Optic Waveguide Power Sensor for Millimeter-Wave Linearity
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Solution Overview
Problem
Existing electromagnetic wave power sensing technologies are limited in their ability to measure electromagnetic wave power across a wide frequency band, particularly in the millimeter wave band, due to the limitations of thermistor mounts and the nonlinearity of diode-based methods.
Innovation Solution
An electromagnetic wave power sensing apparatus utilizing an electro-optic element, which includes a waveguide, an electromagnetic wave absorber, parallel plates, and a movement guide to position the electro-optic element for accurate measurement of electromagnetic wave power across a wide frequency band, ensuring linearity of sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If thermistor mounts are used to sense electromagnetic wave power, then the sensing mechanism is simple, but the applicable frequency band is limited
Solution Approach 1:
The electro-optic element is designed to sense electromagnetic wave power across a universal frequency range including millimeter wave bands, replacing frequency-specific thermistor mounts with a multi-functional sensing mechanism that maintains linearity while expanding adaptability
Solution Approach 2:
The patent replaces the thermal-mechanical sensing mechanism of thermistor mounts with an electro-optic sensing system that uses electro-optic elements to detect electromagnetic wave power, eliminating the frequency limitations of thermal methods while maintaining measurement linearity
2Measurement precision
If diodes are used to sense electromagnetic wave power, then the device structure is simple, but the measurement accuracy deteriorates due to nonlinearity
Solution Approach 1:
The patent replaces the nonlinear electrical sensing mechanism of diodes with an electro-optic sensing system that provides linear measurement response, using the electro-optic effect to convert electromagnetic wave power into optical signals that can be measured with high precision and linearity
Solution Approach 2:
The electro-optic element acts as an intermediary that converts electromagnetic wave power into optical domain signals, enabling linear and accurate measurement by translating the measurement problem into the optical domain where linear detection is achieved
3Measurement precision
If the electro-optic element is positioned inside the waveguide, then the electromagnetic wave power sensing accuracy is improved, but the device complexity increases due to movement control mechanisms
Solution Approach 1:
The electro-optic element is designed with movable positioning capability that allows it to be dynamically placed inside the waveguide during measurement, enabling high-precision sensing while the movement guide provides controlled positioning rather than fixed installation
Solution Approach 2:
The sensing apparatus is segmented into separate functional modules including the waveguide, the movable electro-optic element, and the movement guide, allowing the electro-optic element to be independently positioned inside the waveguide only when measurement precision is required
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
Enables accurate measurement of electromagnetic wave power in a wide frequency band, including the millimeter wave band, without the limitations of frequency band restrictions or nonlinearity, thereby improving the precision and range of electromagnetic wave power sensing.
Implementation Method 1
an electro-optic element configured to sense the electromagnetic wave power
Implementation Method 2
an electromagnetic wave absorber disposed at a termination of the waveguide and absorbing the electromagnetic wave power incident to a front surface of the electromagnetic wave absorber
Data Source
AI summary
Provided is an electromagnetic wave power sensing apparatus. The electromagnetic wave power measuring apparatus includes a waveguide to which electromagnetic wave power is incident, an electromagnetic wave absorber disposed at a termination of the waveguide and absorbing the electromagnetic wave power incident to a front surface of the electromagnetic wave absorber, parallel plates disposed at a rear of the electromagnetic wave absorber and arranged on and under a center line of the waveguide, a waveguide guide for fixing the waveguide and the electromagnetic wave absorber, wherein the parallel plates are positioned in the waveguide guide, an electro-optic element configured to sense the electromagnetic wave power, an electro-optic element fixer to which the electro-optic element is coupled, and a movement guide coupled to the electro-optic element fixer and controlling movement of the electro-optic element into the inside of the waveguide guide in order to sense the electromagnetic wave power.