基本信息:
- 专利标题： CHOPPER MIXER TELEMETRY CIRCUIT
- 专利标题（中）：CHOPPER混频器电视电路
- 申请号：PCT/US2007/010383 申请日：2007-04-30
- 公开(公告)号：WO2008133624A1 公开(公告)日：2008-11-06
- 发明人： GREVIOUS, John, J. , DENISON, Timothy, J.
- 申请人： MEDTRONIC, INC. , GREVIOUS, John, J. , DENISON, Timothy, J.
- 申请人地址： 710 Medtronic Parkway Minneapolis, MN 55432 US
- 专利权人： MEDTRONIC, INC.,GREVIOUS, John, J.,DENISON, Timothy, J.
- 当前专利权人： MEDTRONIC, INC.,GREVIOUS, John, J.,DENISON, Timothy, J.
- 当前专利权人地址： 710 Medtronic Parkway Minneapolis, MN 55432 US
- 代理机构： SHUMAKER, Steven, J.
- 主分类号： H03D3/00
- IPC分类号： H03D3/00
摘要：
This disclosure describes a chopper mixer telemetry circuit for use in a wireless receiver. The receiver may be located in an implantable medical device (IMD) or external programmer. The chopper mixer telemetry circuit may include a mixer amplifier that operates as a synchronous demodulator to provide selective extraction of wireless signals received from a transmitter while suppressing out-of- band noise that can undermine the reliability of the telemetry link between an IMD or programmer and another device. The mixer amplifier may utilize parallel signal paths to convert the received telemetry signal into an in-phase (I) signal component and a quadrature (Q) signal component and recombine the I and Q signal components to reconstruct the total signal independently of the phase mismatch between the transmitter and receiver. Each signal path may include a chopper- stabilized mixer amplifier that amplifies telemetry signals within a desired band while suppressing out-of-band noise.
摘要（中）：
本公开描述了一种用于无线接收机的斩波混频器遥测电路。 接收器可以位于可植入医疗装置（IMD）或外部编程器中。 斩波器混频器遥测电路可以包括混频器放大器，其作为同步解调器操作以提供从发射机接收的无线信号的选择性提取，同时抑制可能破坏IMD或编程器之间的遥测链路的可靠性的带外噪声， 另一台设备。 混频器放大器可以利用并行信号路径将接收到的遥测信号转换为同相（I）信号分量和正交（Q）信号分量，并重新组合I和Q信号分量，以独立于相位失配重构总信号 在发射机和接收机之间。 每个信号路径可以包括斩波稳定的混频放大器，其在抑制带外噪声的同时放大期望频带内的遥测信号。