OSCILLATOR CIRCUIT, DEVICE, AND METHOD
First Claim
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1. A voltage-controlled oscillator (VCO) comprising:
- a first transistor cross-coupled with a second transistor; and
a transformer-coupled band-pass filter (BPF) comprising a first transformer and a second transformer,whereinthe first transformer is configured to control a gate and a drain terminal of the first transistor, andthe second transformer is configured to control a gate and a drain terminal of the second transistor.
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Abstract
A voltage-controlled oscillator (VCO) includes a first transistor cross-coupled with a second transistor, and a transformer-coupled band-pass filter (BPF) including a first transformer and a second transformer. The first transformer is configured to control a gate and a drain terminal of the first transistor, and the second transformer is configured to control a gate and a drain terminal of the second transistor.
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Citations
20 Claims
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1. A voltage-controlled oscillator (VCO) comprising:
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a first transistor cross-coupled with a second transistor; and a transformer-coupled band-pass filter (BPF) comprising a first transformer and a second transformer, wherein the first transformer is configured to control a gate and a drain terminal of the first transistor, and the second transformer is configured to control a gate and a drain terminal of the second transistor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An oscillator comprising:
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a first node configured to have a first bias voltage; a second node configured to have a second bias voltage; a reference node configured to have a reference voltage; an output terminal; a forward stage comprising a first terminal coupled to the output terminal and a second terminal coupled to one of the first node, the second node, or the reference node; and a transformer-coupled band-pass filter (BPF) coupled between the output terminal and a third terminal of the forward stage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A differential oscillator comprising:
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a differential circuit coupled between a first output node and a second output node; and a transformer-coupled band-pass filter (BPF) coupled between the first output node and the second output node, the transformer-coupled BPF comprising; a coupling device coupled between the first output node and the second output node; and a transformer comprising; a first winding coupled between the first output node and a voltage node; and a second winding coupled between the second output node and the voltage node. - View Dependent Claims (17, 18, 19, 20)
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Specification