System and method for testing antenna frequency response
US6236371A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2837
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method tests the frequency response of a linear time-invariant unit-under-test, such as an antenna. A test signal is generated at a selected frequency and modulated with a spread spectrum input excitation signal to produce a broadband test signal that is substantially wider than the bandwidth of a device-under-test. The test signal is transmitted from one of either the unit-under-test or test device to a responsive test device or unit-under-test. The test signal is demodulated by mixing an input excitation signal that is delayed and increased in steps, such that the difference in time generates an estimate of the impulse response of the unit-under-test. The test signal is correlated and integrated to filter out unwanted interference and reflections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.