This paper proposes a method for performance improvement of multi-stacked CMOS millimeter-wave power amplifiers based on negative capacitance phase detuning, which can be generalized to other phase detuning techniques. It not only yields better inter-stage matching between stacks, but also offers the advantage of relaxed inter-stage phase rotation due to transistor parasitics. A x1.6 output power/gain and 7% efficiency improvement is observed as a result of the proposed technique. This is achieved because phase misalignment between stacks is minimized. The method is evaluated using simulations based on 28GHz PA in 45nm CMOS technology.
Authors:
Montaseri Mohammad Hassan, Rahkonen Timo, Aikio Janne, Pärssinen Aarno
Publication type:
A4 Article in conference proceedings
Place of publication:
2018 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, INMMIC 2018
Keywords:
CMOS, millimeter-wave integrated circuits, power amplifier, stacked transistor
Published:
5 July 2018
Full citation:
M. H. Montaseri, T. Rahkonen, J. Aikio and A. Pärssinen, “Performance Improvement of Multi-Stacked CMOS mm-Wave Power Amplifiers Based on Negative Capacitance Phase Compensation,” 2018 International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMIC), Brive La Gaillarde, 2018, pp. 1-3. doi: 10.1109/INMMIC.2018.8429990
DOI:
https://doi.org/10.1109/INMMIC.2018.8429990
Read the publication here:
http://urn.fi/urn:nbn:fi-fe201902134747
