发明授权
- 专利标题: Transmitting device for driving a high-frequency antenna of a magnetic-resonance device
- 专利标题(中): 用于驱动磁共振装置的高频天线的发射装置
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申请号: US13440552申请日: 2012-04-05
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公开(公告)号: US09488706B2公开(公告)日: 2016-11-08
- 发明人: Markus Vester
- 申请人: Markus Vester
- 申请人地址: DE München
- 专利权人: Siemens Aktiengesellschaft
- 当前专利权人: Siemens Aktiengesellschaft
- 当前专利权人地址: DE München
- 代理机构: Lempia Summerfield Katz LLC
- 优先权: DE102011006872 20110406
- 主分类号: H03F3/24
- IPC分类号: H03F3/24 ; G01R33/36
摘要:
A transmitting device for driving a high-frequency antenna of a magnetic-resonance device using a target signal capable of being amplitude-modulated is provided. A number N of similarly embodied amplifier modules, where N is at least two, a signal-conditioning device, and a combining device for combining output signals of the amplifier modules into the target signal are provided. The signal-conditioning device generates N drive signals having a predetermined pulse frequency that consist of pulses having a length dependent on a desired target amplitude and having a phase corresponding to the desired target phase and a frequency corresponding to the desired target frequency. The pulses of the individual drive signals are mutually offset in time by, in each case, 1/N of a pulse period corresponding to the pulse frequency. Each drive signal is fed to an amplifier module.