RF signature detection for waveguide deformation
| DWPI Title: Waveguide health system for waveguide health and wireless charging system, has RF receiver with receiver antenna, which is adapted to receive a signature RF waveform from the waveguide, where RF transmitter transmits probe RF waveform |
| Abstract: A radio frequency (RF) based waveguide health monitoring system is disclosed. The system employs an RF transmitter for launching a probe RF waveform into a waveguide. Reflections, etc., from the interior of the waveguide of the probe RF waveform create a signature RF waveform, with a health RF receiver receiving this resultant signature RF waveform. A health processing system analyzes the signature RF waveform, and when it detects a change indicative of a deformation of the waveguide, generates a warning signal. This change may be due to bends, flexes, vibrations (or changes in vibrations), or separations of the waveguide. The system may have low frequency, high frequency, or high frequency imaging modes. The system may employ a high-power probe RF waveform, thereby enabling a wireless charging system with power RF receivers located along the length of the waveguide providing additional functionality. |
| Use: Waveguide health system for waveguide health and wireless charging system (claimed). Can also be used in traffic enforcement radars and automatic door openers. |
| Advantage: System uses the homodyne Doppler technique that greatly improves the signal to noise ratio (SNR). |
| Novelty: The waveguide health system has radio frequency (RF) transmitter (120) with transmit antenna (125), which is adapted to transmit a probe RF waveform into a waveguide (110). The RF receiver (130) with receiver antenna (135), which is adapted to receive a signature RF waveform from the waveguide, where signature RF waveform due to an interaction of the probe RF waveform with the waveguide, the signature RF waveform including indicia of one or more of a bend, a flex, a vibration, a change in vibration, and a separation of the waveguide. The health processing system (140) is adapted to compare a digital representation of the signature RF waveform with a digital representation of a baseline signature RF waveform or a digital representation of a previously stored signature RF waveform and to generate a warning signal. The waveguide health system employs a homodyne Doppler technique. |
| Filed: 10/5/2021 |
| Application Number: US17494085A |
| Tech ID: SD 15025.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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