Interferometric receiver for electromagnetic signals
US5894286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1987 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/043
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interferometric receiver for electromagnetic signals comprises at least two reception channels. Each channel consists of an antenna (A1), followed by a single sideband mixer (M12) and a mixer (M14). As a local signal, the mixer (M14) receives a signal similar to the received signals, taken, for example, from an auxiliary antenna (AR) followed by a limiting amplifier (ALR). The first mixer (M12) receives a frequency from a generator (GFI), which frequency is equal to the value of the intermediate frequency used in the stages (FI1) of this type following the mixer (M14). A phase processing can then be carried out and different countermeasures taken, the simplest of which is a visualization (VI).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.