Third Order Intermodulations Phase Shifting in Power Amplifiers for Spatial filtering in Multi-beam 5G mmW Phased Array

This paper proposes an innovative concept of spatial third-order intermodulation products (IMD3) filtering in millimeter-wave 5G phased arrays. This technique aims to relax the linearity constraints on the power amplifiers (PA) and thus power consumption. Implementation of independent control of the...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs p. 1
Main Authors Capelli-Mouvand, Thomas, Deltimple, Nathalie, Cathelin, Philippe, Ghiotto, Anthony
Format Journal Article
LanguageEnglish
Published Institute of Electrical and Electronics Engineers 18.04.2023
Subjects
Engineering Sciences
Array signal processing
Harmonic analysis
Phased array
Power harmonic filters
Phased arrays
IMD3
5G
Beamforming
Power amplifiers
Linearity
Transistors
Millimeterwaves
Power amplifier
Antenna arrays
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Summary:This paper proposes an innovative concept of spatial third-order intermodulation products (IMD3) filtering in millimeter-wave 5G phased arrays. This technique aims to relax the linearity constraints on the power amplifiers (PA) and thus power consumption. Implementation of independent control of the phase of IMD3 is proposed by using the nonlinear output capacitance of metal-oxide semi-conductors (MOS) amplifiers under phase-controlled second harmonic injection. The implemented control uses beamforming properties to perform spatial filtering of IMD3 product. A second harmonic injection on a power amplifier is proposed in STMicroelectronics CMOS065SOIMMW technology at 28 GHz. It shows phase control of IMD3 with a range of 35 degrees, allowing relaxation up to 17 dB on the linearity of large phased array power amplifiers.
ISSN:1549-7747
1558-3791