Method for multi-mode, multi-load, and multi-domain optimization of a multi-channel near-field RF transmitter
US9841477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2012 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5612
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for optimization of a performance of a multi-channel transmitter including several transmit elements, particularly in a magnetic resonance imaging device. The method includes: (a) Exciting the transmit elements of the multi-channel transmitter by electric excitation signals comprising a specific power, with the power of the excitation signals partially reflected by the transmit elements of the multichannel transmitter, (b) Determining a reflected power which is reflected by the multi-channel transmitter during excitation of the transmit elements, (c) Determining reflection coefficients Sxx of the multi-channel transmitter, (d) Determining reflection coefficients Sxy of the multi-channel transmitter, (e) Calculating a performance criterion representing the performance of the multi-channel transmitter, with the performance criterion based on the reflected power, the reflection coefficients Sxx and the reflection coefficients Sxy, and (f) Tuning the multi-channel transmitter so that the performance criterion is optimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.