Method for obtaining field strength information
US8200178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2010 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Dec 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/0871
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for obtaining field strength information from a received electromagnetic signal by a receiver unit is provided, whereby an input voltage for an operational amplifier is generated from the received signal in the receiver unit by means of an input resistance realized as a voltage divider circuit and an output voltage is generated by the operational amplifier by means of a fixed amplification factor. The input voltage is changed until the output voltage lies within a predefined interval that includes the value of the reference voltage. The input voltage is tapped at the voltage divider circuit and, to change the input voltage at the voltage divider circuit, which has a plurality of divider nodes and a constant resistance value, a divider node is selected and a partial voltage is tapped. The field strength value received by the receiver unit is determined from a comparison of a quantity assigned to the selected divider node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.