A 19.7-38.9-GHz Ultrabroadband PA With Phase Linearization for 5G in 28-nm CMOS Process
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
32
Journal Issue
4
Pages
327-330
Date Issued
2021
Author(s)
Abstract
This letter presents an ultrabroadband power amplifier (PA) with AM-phase modulation (PM) linearizer in a 28-nm bulk CMOS process for 5G millimeter-wave (mm-Wave) mobile communications. To enable the 5G mm-Wave multigigahertz broadband, a pMOS linearizer in power stage is introduced to achieve broadband AM-PM linearization. The proposed linearized PA achieves a 3-dB gain bandwidth (BW) from 19.7 to 38.9 GHz (65.5%) covering multiple 5G bands. The measured OP $_{{1,dB}}$ is 12.7 dB ± 0.6 dB from 22 to 38 GHz, and the PAE is larger than 25% from 21 to 36 GHz (50%). For 100-MHz 64-quadratic-amplitude modulation (QAM) orthogonal frequency-division multiplexing (OFDM) signal, this PA obtains a linear output power of 8.5 dBm/8.3 dBm/8.8 dBm under error vector magnitude (EVM) of -25 dB with modulated PAE of 11.0%/11.0%/11.9% at 23 GHz/28 GHz/38 GHz, respectively. Moreover, the measured back-off power from OP $_{{1,dB}}$ to linear output power is 4.7 dB/3.9 dB/3.7 dB at 23 GHz/28 GHz/38 GHz. IEEE
Subjects
5G mobile
5G mobile communication
broadband
Broadband communication
CMOS
Linearity
linearizer
millimeter-wave (mm-Wave)
OFDM
power amplifier (PA).
Power generation
Transformers
Wideband
5G mobile communication systems
Amplitude modulation
Broadband amplifiers
CMOS integrated circuits
Linearization
Millimeter waves
Orthogonal frequency division multiplexing
Broadband
Broadband Communication
Linearizers
Millimeter-wave
Orthogonal frequency-division multiplexing
Power amplifier .
Power- generations
Transformer
Wide-band
Power amplifiers
SDGs
Type
journal article