Common-emitter amplifier with unilateral pre-embedding inductors

US12267048B1 · kind B1 · utility

Assignee

• BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS · CN

Inventors

• Jianguo Yu · Columbia, US
• Xiaorui LIU · 安丰镇, CN
• Yun-Ti Wang · Fremont, US
• Kaile Li · Beijing, CN
• Yibo Huang · Beijing, CN
• FeiXiang Zhang · Lo Wu, CN
• Zhihe Wu · Beijing, CN

Key dates

• Filing date: Dec 9, 2024
• Grant date: Apr 1, 2025
• Expiry date: Dec 9, 2044

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03F2200/451
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A common-emitter amplifier with unilateral pre-embedding inductors includes: an input matching circuit, a first-stage amplification circuit, a first-stage interstage matching circuit, a second-stage amplification circuit, a second-stage interstage matching circuit, a third-stage amplification circuit, and an output matching circuit. The common-emitter amplifier is configured to: make an input signal sequentially enter bases of common-emitter transistors of the first-stage, second-stage, and third-stage amplification circuits, make the input signal be amplified stage by stage by the common-emitter transistors, and finally make an amplified input signal obtained by amplifying of each common-emitter transistor output through a collector of each common-emitter transistor. The common-emitter amplifier is configured to introduce interstage staggered tuning to expand bandwidth to address a narrowband problem. The unilateral pre-embedding inductors are configured to reduce a required value of the parallel embedding inductor to reduce difficulty of implementing the parallel embedding inductor, conducive to the realization of transmission lines.