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公开(公告)号：US20190131930A1
公开(公告)日：2019-05-02
申请号：US16232726
申请日：2018-12-26
摘要： An oscillator, including a resonance circuit, a cross coupled current source circuit, and a positive feedback circuit coupled between the current source circuit and the resonance circuit, where the resonance circuit is configured to generate a differential oscillation signal having a first oscillation frequency, the positive feedback circuit is configured to receive the differential oscillation signal, and amplify a gain of the differential oscillation signal to obtain a differential output oscillation signal, and the current source circuit is configured to provide an adjustable bias current for the resonance circuit and the positive feedback circuit. Since, the current source circuit provides the adjustable bias current for the positive feedback circuit and the resonance circuit, and forms a transconductance boosted (Gm-boosted) structure with the positive feedback circuit, the positive feedback circuit can amplify the gain of the received differential oscillation signal to obtain the differential output oscillation signal.
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公开(公告)号：US12002618B2
公开(公告)日：2024-06-04
申请号：US16901281
申请日：2020-06-15
CPC分类号： H01F30/06 , H01F27/06 , H01F27/28 , H01F27/40 , H01L23/645
摘要： A transformer, including a first coil and a second coil. The first coil is magnetically coupled to the second coil. At least one of the first coil and the second coil includes a plurality of sub-coils, and the plurality of sub-coils include a first sub-coil and a second sub-coil. A first magnetic field formed by the first sub-coil passes through a layout plane of the transformer in a first manner, and a second magnetic field formed by the second sub-coil passes through the layout plane in a second manner. The first manner includes passing in from a first surface of the layout plane and passing out from a second surface of the layout plane, and the second manner includes passing in from the second surface and passing out from the first surface.
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公开(公告)号：US11791772B2
公开(公告)日：2023-10-17
申请号：US17492463
申请日：2021-10-01
IPC分类号： H03B5/12
CPC分类号： H03B5/1212 , H03B5/1228
摘要： Example oscillators and oscillator-based apparatus are described. One example oscillator includes: a resonant circuit, configured to generate an oscillator signal; a first cross-coupled transistor, coupled to the resonant circuit; and a power supply circuit, configured to supply a power supply signal for the first cross-coupled transistor based on a first voltage and a second voltage, where the first voltage is a power supply voltage, and the second voltage is a voltage generated by an external sensing circuit. Because an oscillation frequency of the oscillator changes with the power supply signal of the oscillator, the oscillation frequency of the oscillator can be compensated by adjusting the power supply signal.
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公开(公告)号：US20200312540A1
公开(公告)日：2020-10-01
申请号：US16901281
申请日：2020-06-15
摘要： A transformer, including a first coil and a second coil. The first coil is magnetically coupled to the second coil. At least one of the first coil and the second coil includes a plurality of sub-coils, and the plurality of sub-coils include a first sub-coil and a second sub-coil. A first magnetic field formed by the first sub-coil passes through a layout plane of the transformer in a first manner, and a second magnetic field formed by the second sub-coil passes through the layout plane in a second manner. The first manner includes passing in from a first surface of the layout plane and passing out from a second surface of the layout plane, and the second manner includes passing in from the second surface and passing out from the first surface.
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