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公开(公告)号：EP3291448A1
公开(公告)日：2018-03-07
申请号：EP16786525.2
申请日：2016-04-27
发明人： TAMARU Shingo , KUBOTA Hitoshi , FUKUSHIMA Akio , YUASA Shinji
摘要： The present invention provides a high-frequency phase-locked oscillation circuit having an extremely narrow peak width and a stable frequency so that a high-frequency wave that is oscillated by the MR element solves a problem of a large peak width of oscillation spectrum. The high-frequency phase-locked oscillation circuit is achieved by providing: a magnetoresistive element 6 that oscillates a high-frequency wave with an oscillating frequency f out ; a reference signal source 1 that outputs a reference signal with a reference frequency f ref ; a phase-locked loop circuit having a phase comparator 3, a loop filer 4, and a frequency divider 9; an adder 5 that adds a phase error signal A output from the loop filter and a bias voltage B for oscillating the high-frequency wave from the magnetoresistive element, and that inputs an added bias voltage (A+B) to the magnetoresistive element 6; and a filter 7 provided between the frequency divider 9 and the magnetoresistive element 6 in a region closer to an input side of the frequency divider 9, the filter cutting off the reference frequency f ref while allowing the oscillating frequency f out to pass through the filter.
摘要翻译： 本发明提供一种高频锁相振荡电路，该电路具有非常窄的峰宽和稳定的频率，使得由MR元件振荡的高频波解决了振荡谱的峰值宽度大的问题。 高频锁相振荡电路通过提供：振荡具有振荡频率fout的高频波的磁阻元件6来实现; 输出具有参考频率fref的参考信号的参考信号源1; 具有相位比较器3，环路滤波器4和分频器9的锁相环电路; 加法器5，将从环路滤波器输出的相位误差信号A和用于使来自磁电阻元件的高频振荡的偏置电压B相加，并将相加的偏置电压（A + B）输入到磁阻元件6; 以及在分频器9和磁阻元件6之间的更靠近分频器9的输入侧的区域中设置的滤波器7，滤波器在允许振荡频率fout通过滤波器的同时切断参考频率fref。
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公开(公告)号：EP3291448B1
公开(公告)日：2020-01-01
申请号：EP16786525.2
申请日：2016-04-27
发明人： TAMARU Shingo , KUBOTA Hitoshi , FUKUSHIMA Akio , YUASA Shinji
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