Measuring radio-frequency impedance
US4283794A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Mar 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for deriving radio-frequency impedance information of an electrical network, for example, an aerial, by using a current converter for inducing a radio-frequency current into the network and a voltage converter for impressing a radio-frequency voltage on the network. By applying radio-frequency signals to the converters, the resultant signals present in the network may be detected by connecting a radio receiver to the network, from which detected signals the impedance may be derived. By directly connecting the radio receiver to the network, the radio-frequency energy applied to the network by the converters may be kept very small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.