发明申请
US20060261889A1 System and method for employing variable magnetic flux bias in an amplifier
失效
在放大器中采用可变磁通偏置的系统和方法
- 专利标题: System and method for employing variable magnetic flux bias in an amplifier
- 专利标题(中): 在放大器中采用可变磁通偏置的系统和方法
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申请号: US11437316申请日: 2006-05-18
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公开(公告)号: US20060261889A1公开(公告)日: 2006-11-23
- 发明人: Roberto Giovannotto
- 申请人: Roberto Giovannotto
- 主分类号: H03F15/00
- IPC分类号: H03F15/00
摘要:
A system and method for employing variable magnetic flux bias in an amplifier. The amplifier system comprises an output transformer and a magnetic sensor configured to sense a first magnetic flux of the output transformer. The magnetic sensor generates a flux signal responsive to the first magnetic flux. Control circuitry is configured to receive the flux signal and to generate a control signal responsive to the flux signal. A winding is configured to receive the control signal and to induce a second magnetic flux within the output transformer responsive to the control signal, the second magnetic flux having opposite polarity to the first magnetic flux. The second magnetic flux may maintain a non-zero quiescent magnetic bias level within the output transformer, or may substantially cancel or null the DC and low-frequency subsonic components of the first magnetic flux.