Active phased array adjustment using transmit amplitude adjustment range measurements
US5644316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1996 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | May 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/0254
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An RF drive leveling adjustment method using transmit amplitude adjustment range for use with active phased array antenna systems. Relative RF measurements of transmit amplitude adjustment range of an active array antenna or selected elements or sets of elements of the antenna are used to determine correction factors for RF drive levels of RF drive amplifier(s) used by transmit modules of the active array antenna. The method comprises the following steps. The first step comprises calibrating the transmit RF drive amplifiers of an active array antenna for a predetermined transmit duty factor and pulse repetition frequency. The second step comprises measuring relative RF measurements of transmit amplitude adjustment range of the transmit module. The third step comprises determining correction factors for RF drive levels of the transmit RF drive amplifiers. The fourth step comprises adjusting the RF drive level of the transmit RF drive amplifiers using the correction factors. by using the correction factors, phase and gain command linearization table performance of the transmit modules is preserved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.