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公开(公告)号：US20200052647A1
公开(公告)日：2020-02-13
申请号：US16322288
申请日：2016-08-23
发明人： Andreas Kämpe
摘要： A biasing circuit for biasing a switching transistor, wherein the switching transistor is used for switching a respective capacitor cell into/out of a capacitor array, wherein the capacitor array comprises one or more such capacitor cells, and wherein the capacitor array is coupled in parallel with a primary inductor to form an inductive/capacitive tank. The biasing circuit comprises a secondary inductor which is inductively coupled to the primary inductor, the secondary inductor configured to provide a bias signal for biasing the switching transistor.
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公开(公告)号：US11050385B2
公开(公告)日：2021-06-29
申请号：US16642884
申请日：2017-08-29
发明人： Andreas Kämpe
IPC分类号： H03B5/12
摘要： An oscillator operable in Class-C comprises at least one set of cross-coupled transistors. A threshold voltage of the transistors is controllable by having a bias voltage applied at back-gates of the transistors. The bias voltage thereby controls a conduction angle of the transistors to enable operation of the oscillator in Class-C. There is further provided a radio transceiver comprising such an oscillator, a method of operating such an oscillator, and a controller configured to operate such an oscillator.
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公开(公告)号：US10666193B2
公开(公告)日：2020-05-26
申请号：US16322288
申请日：2016-08-23
发明人： Andreas Kämpe
摘要： A biasing circuit for biasing a switching transistor, wherein the switching transistor is used for switching a respective capacitor cell into/out of a capacitor array, wherein the capacitor array comprises one or more such capacitor cells, and wherein the capacitor array is coupled in parallel with a primary inductor to form an inductive/capacitive tank. The biasing circuit comprises a secondary inductor which is inductively coupled to the primary inductor, the secondary inductor configured to provide a bias signal for biasing the switching transistor.
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