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US 12,556,138 B2Granted
Semiconductor device and operating method thereof
AssigneesTaiwan Semiconductor Manufacturing Company, Ltd., National Cheng Kung University
InventorsKuang-Wei Cheng, Chao An Shen, Tai Jung Hsu
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Abstract
A semiconductor device includes a first inductor, a second inductor and at least one varactor. The first inductor is configured to output at least one output signal. The second inductor is coupled to the first inductor with transformer coupling. The at least one varactor is coupled to the second inductor. A frequency of the at least one output signal is tuned according to the at least one varactor.
Claims20
A semiconductor device, comprising:
- a first inductor configured to output at least one output signal;
- a second inductor coupled to the first inductor with transformer coupling;
- a third inductor coupled to the first inductor and the second inductor as a trifilar transformer;
- and
- at least one varactor coupled to the second inductor,
- wherein a frequency of the at least one output signal is tuned according to the at least one varactor,
- the at least one varactor is configured to receive a first control signal changed from a first voltage level to a second voltage level,
- the third inductor is configured to receive a first reference voltage signal,
- the first inductor is configured to receive a second reference voltage signal, and
- a first voltage level of the first reference voltage signal is lower than a second voltage level of the second reference voltage signal.
7 more elements
A method, comprising:
- generating at least one output signal by a trifilar transformer;
- tuning a frequency of the at least one output signal by at least one varactor coupled to the trifilar transformer;
- receiving a first control signal by a first inductor in the trifilar transformer;
- adjusting the at least one varactor by the first control signal;
- receiving a first reference voltage signal by a second inductor in the trifilar transformer;
- and
- receiving a second reference voltage signal by a third inductor in the trifilar transformer,
- wherein the first inductor is coupled to the at least one varactor, and
- a first voltage level of the first reference voltage signal is lower than a second voltage level of the second reference voltage signal.
6 more elements
A semiconductor device, comprising:
- at least one varactor;
- a first inductor coupled to the at least one varactor;
- a second inductor separated from the first inductor by a first distance;
- and
- a third inductor separated from the first inductor by a second distance,
- wherein the first distance is same as the second distance,
- the at least one varactor is disposed between two terminals of the third inductor,
- the third inductor is configured to receive a first reference voltage signal,
- the second inductor is configured to receive a second reference voltage signal, and
- a first voltage level of the first reference voltage signal is lower than a second voltage level of the second reference voltage signal.
7 more elements
Dependencies are inferred from the claim text.