Active reflector with oscillation inhibition
US11789117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Jun 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/93
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed active reflector apparatus and methods that inhibit self-induced oscillation. One illustrative apparatus embodiment includes an amplifier and an adjustable phase shifter. The amplifier amplifies a receive signal to generate a transmit signal, the transmit signal causing interference with the receive signal. The adjustable phase shifter modifies the phase of the transmit signal relative to that of the receive signal to inhibit oscillation. A controller may periodically test a range of settings for the adjustable phase shifter to identify undesirable phase shifts prone to self-induced oscillation, and may maintain the phase shift setting at a value that inhibits oscillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.