Method and device for calibrating smart antenna array
US6600445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2002 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Feb 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/267
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention discloses a method and a device for calibrating smart antenna arrays in real time. The invention includes the steps of providing a calibrating link comprising a coupling structure, feeder cables and pilot transceiver; pre-calibrating the coupling structure with a vector network analyzer and recording its receiving and transmitting transmission coefficients, respectively; implementing the receiving calibration to a smart antenna array by adjusting the transmission coefficient of each receiving link and a reference link to the same amplitude and phase difference &PHgr;, which is recorded and stored in a baseband processor; and implementing the transmitting calibration by adjusting the transmission coefficient of each transmitting link and a reference link to the same amplitude and phase difference &PSgr;, which is recorded and stored in the baseband processor. The coupling structure of the invention is implemented by a pilot antenna using spatial couple mode or a passive network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.