Title：Voltage-controlled oscillator

Country：中国

Patent No.：202011566001.4

Legal Status：Under review

Inventor：Haikun Jia, Wei Deng, Baoyong Chi

Assignee：Tsinghua University

Address：Tsinghua University,Haidian District Beijing 100084, China

Filing Date：2020-12-25

Issue Date：

Disclosed herein is a voltage-controlled oscillator including: two or more voltage-controlled oscillation cores bridged on a three-coil transformer of a closed structure; wherein the voltage-controlled oscillation cores respectively comprise two transistors which are arranged at the bridging position in parallel; wherein the source end and the drain end of the first transistor are respectively connected with a first coil and a second coil of the three-coil transformer on the first side of the bridging position, and the gate end of the first transistor is connected with a third coil on the second side of the bridging position; the source end and the drain end of the second transistor are respectively connected with the first coil and the second coil on the second side of the bridging position, and the gate end is connected with the third coil on the first side of the bridging position; the third coil and the second coil between the adjacent voltage-controlled oscillation cores are strongly coupled, the first coil and the third coil are weakly coupled, and the first coil and the second coil are weakly coupled. According to the embodiment of the invention, the voltage-controlled oscillator applicable to millimeter waves is realized based on the small inductance design of the three-coil transformer, and hardware support is provided for realizing high-purity local oscillation signals.

Patent Certificate： PDF/Jpg