US 11,757,406 B2
Oscillator circuit
Yunfang Zhou, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Guangdong (CN)
Filed on Apr. 29, 2022, as Appl. No. 17/733,453.
Application 17/733,453 is a continuation of application No. PCT/CN2019/114877, filed on Oct. 31, 2019.
Prior Publication US 2022/0263465 A1, Aug. 18, 2022
Int. Cl. H03B 5/12 (2006.01)
CPC H03B 5/1228 (2013.01) [H03B 2200/0088 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An oscillator circuit, comprising:
a first amplifier and a second amplifier, wherein the first amplifier and the second amplifier can be switched by using switches; and
a resonator, comprising a capacitive element and an inductive element, wherein the inductive element comprises a tapped inductor, the tapped inductor comprises one or more conductive segments forming a physical loop and a first and second tapped segments coupled to the physical loop, the physical loop has a first terminal and a fourth terminal that are coupled to differential inputs of the first amplifier and differential outputs of the second amplifier, and the first tapped segment has a second terminal and the second tapped segment has a third terminal, the second terminal and the third terminal are coupled to differential outputs of the first amplifier, the differential outputs of the second amplifier are cross-coupled to differential inputs of the second amplifier.