Radio frequency calibration apparatus and method for multi-antenna mobile communication system
US8140020B2 · kind B2 · utility
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3References
13Claims
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Key dates
| Filing date | Sep 21, 2007 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jul 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is provided to an RF calibration apparatus and method for a multi-antenna mobile communication system, which calibrates a phase error and gain error of an RF path by calculating the minimum value of a sum of an initialized reference signal and a comparison signal by a simple operation and controlling the phase value of a phase converter and the gain of a variable amplifier on the RF path, in calibrating the RF path of a multi-antenna mobile communication system of a TDD (Time Division Duplexing) type or FDD (Frequency Division Duplexing) type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.