Detector and modulator circuits for passive microwave links
US5598169A · kind A · utility
65Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/767
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An RF apparatus (e.g., a wireless label) provides improved backscattering of an incident RF signal by utilizing a separate modulator diode, which connects across the antenna, to modulate the backscattering of the antenna. A separate detector diode connects across the antenna through an impedance matching network to detect modulated signals received by the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.