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1.发明公开Transconductance tuning circuit with independent frequency and amplitude control 审中-公开Transkonduktanz-Frequenzabstimmung mitunabhängigerFrequenz und Amplitudensteurung
公开(公告)号：EP1160967A2
公开(公告)日：2001-12-05
申请号：EP01304186.8
申请日：2001-05-09
发明人： Horikawa, Akira , Yoshida, Akira , Taya, Takashi
IPC分类号： H03B5/00
CPC分类号： H03B5/26
摘要： A tuning circuit includes an oscillator that receives an oscillating input signal and a control signal, and generates an oscillating output signal. The control signal is obtained from a frequency control circuit that compares the phases of the oscillating output signal and a reference signal. The control signal controls the transconductance of a transconductance element in the oscillator, thereby controlling the oscillator output frequency. The oscillating input signal is obtained from an amplitude control circuit that detects an amplitude limit of the oscillator output. The oscillator output amplitude is responsive to the oscillating input signal. Frequency control and amplitude control in this tuning circuit are mutually independent, so their respective control loops remain stable under all frequency and amplitude combinations.
摘要翻译： 调谐电路包括接收振荡输入信号和控制信号的振荡器，并产生振荡输出信号。 控制信号从比较振荡输出信号的相位和参考信号的频率控制电路获得。 控制信号控制振荡器中跨导元件的跨导，从而控制振荡器的输出频率。 振荡输入信号是从检测振荡器输出振幅的振幅控制电路获得的。 振荡器输出振幅响应振荡输入信号。 该调谐电路中的频率控制和幅度控制是相互独立的，因此它们各自的控制回路在所有频率和振幅组合下均保持稳定。
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2.发明公开Transconductance tuning circuit with independent frequency and amplitude control 审中-公开与独立的频率和Amplitudensteurung跨频率协调
公开(公告)号：EP1160967A3
公开(公告)日：2002-05-22
申请号：EP01304186.8
申请日：2001-05-09
发明人： Horikawa, Akira , Yoshida, Akira , Taya, Takashi
CPC分类号： H03B5/26
摘要： A tuning circuit includes an oscillator that receives an oscillating input signal and a control signal, and generates an oscillating output signal. The control signal is obtained from a frequency control circuit that compares the phases of the oscillating output signal and a reference signal. The control signal controls the transconductance of a transconductance element in the oscillator, thereby controlling the oscillator output frequency. The oscillating input signal is obtained from an amplitude control circuit that detects an amplitude limit of the oscillator output. The oscillator output amplitude is responsive to the oscillating input signal. Frequency control and amplitude control in this tuning circuit are mutually independent, so their respective control loops remain stable under all frequency and amplitude combinations.
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