Electromagnetic signal proximity detection systems and methods
US7541995B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Feb 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Various methods and systems directed to electromagnetic signal proximity detection are disclosed. For example, an EM detector may include an antenna array for sensing electromagnetic radiation produced by a source of radio-frequency electromagnetic radiation, one or more amplitude demodulation circuits coupled to the antenna array configured to perform an amplitude demodulation of one or more signals provided by the antenna array to produce one or more respective demodulated output signals, and an analysis circuit coupled to the amplitude demodulation circuit configured to determine at least one relative characteristic between the antenna array and the source of radio-frequency electromagnetic radiation. The relative characteristic may be the relative distance and/or angle between the antenna array and the source of radio-frequency electromagnetic radiation. The embodiments allow for signal source detection and location determination without knowledge of the frequency of a target emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.