Handheld Millimeter Wave Material Test System
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Solution Overview
Problem
Traditional coaxial cable systems for testing automotive radar systems at 77 GHz frequencies are expensive and fragile, making them unsuitable for reliable material testing in automotive manufacturing and repair.
Innovation Solution
A handheld millimeter wave material testing unit that includes a meter with a transmitter and receiver surface, a reference unit with alignment mechanisms, and a processor to assess radar transmission and reflectivity through materials like paint and bumpers, using a frequency modulated continuous wave chirp radar integrated circuit and corner cube reflectors for accurate and cost-effective testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If coaxial cable systems are used for testing at 77 GHz frequencies, then measurement precision is maintained, but device reliability deteriorates due to fragility and high cost
Solution Approach 1:
The patent replaces the mechanical coaxial cable transmission system with an electromagnetic wave-based testing system. The handheld meter emits millimeter wave signals directly through air to test materials, eliminating the need for fragile coaxial cables while maintaining measurement capability through direct electromagnetic interaction with the test material
Solution Approach 2:
The patent introduces a reference material as an intermediary standard for calibration and measurement. By comparing signals reflected from or transmitted through the test material against the known reference material, the system achieves accurate measurements without requiring expensive coaxial cable infrastructure
2Measurement precision
If traditional coaxial cable testing systems are used, then measurement accuracy is achieved, but ease of operation deteriorates due to complexity and cost
Solution Approach 1:
The patent divides the testing system into a portable handheld meter and separate reference material, allowing the testing function to be separated from bulky equipment. This segmentation enables operators to perform measurements directly at the vehicle or material location without complex setup, improving ease of operation while maintaining measurement accuracy
Solution Approach 2:
The handheld meter is designed to be self-contained with built-in signal generation, transmission, and reception capabilities. The device performs autonomous measurements by emitting signals, receiving reflections or transmissions, and processing results internally, eliminating the need for complex external equipment or specialized operators
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 quick, accurate, and cost-effective testing of materials for radar transmission and reflectivity, ensuring that automotive radar systems function adequately, while being durable and affordable.
Implementation Method 1
a first transmitter configured to output a first signal at a predetermined frequency to the reflective component of the reference device through the material under test
Implementation Method 2
a first receiver configured to receive a first reflected signal from the reflective component
Implementation Method 3
a second transmitter configured output a second signal at the predetermined frequency to the absorbing component of the reference device through the material under test
Implementation Method 4
a second receiver configured to receive a second reflected signal from the material under test
Data Source
AI summary
A test and measurement device measures an insertion loss of a material under test. The test and measurement device includes a reference device in contact with a first surface of a material under test, the reference device including a reflective component and an absorbing component. A testing device is in contact with a second surface of the material under test, opposite the first surface. The testing device includes a first transmitter to output a first signal at a predetermined frequency to the reflective component of the reference device through the material under test, a first receiver to receive a first reflected signal from the reflective component, a second transmitter output a second signal at the predetermined frequency to the absorbing component of the reference device through the material under test, and a second receiver to receive a second reflected signal from the material under test.