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High-Linearity Drive Amplifier Using Active Local Feedback
- Authors
- Park, Jun-Young; Lee, Ji-Young; Yun, Tae-Yeoul
- Issue Date
- Aug-2016
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Cascode; CMOS; drive amplifier; linearity; local feedback
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.26, no.8, pp.613 - 615
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 26
- Number
- 8
- Start Page
- 613
- End Page
- 615
- ISSN
- 1531-1309
- Abstract
- A drive amplifier consisting of a cascode amplifier and a local feedback amplifier is proposed to ensure high linearity. The local feedback amplifier with a post distortion technique compensates for the nonlinearity of a common-source stage while maintaining input impedance matching and a reasonable power gain. In addition, a process, supply voltage, and temperature (PVT)-compensated current mirror maintains a high OIP3 point over PVT variations. The theoretical analysis, simulation, and measurement are presented, showing good agreement. Measured results show an OIP3 of 27.2 dBm, OP1dB of 7.8 dBm with a power gain of 7.5 dB at 2.1 GHz, and power consumption of 22.2 mW at 1.8 V. The proposed DA is fabricated using a 0.11 m CMOS process.
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Related Researcher
- Yun, Tae Yeoul
- COLLEGE OF ENGINEERING (SCHOOL OF ELECTRONIC ENGINEERING)