A CMOS 24–30-GHz Low-Phase-Variation Variable Gain Amplifier Design for 5G New Radio
- 20 May 2022
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Solid-State Circuits Letters
- Vol. 5, 146-149
Abstract
This letter presents a 24–30-GHz variable gain amplifier (VGA) achieving low-phase variation in a standard RF 65-nm CMOS process. The proposed VGA employs two stages. Phase compensation during the gain variation is realized with the dynamic complementary phase variation at the first stage. The second stage is utilized to increase the gain and keep linearity. Measurement results prove that the proposed VGA achieves a continuous gain tuning range of 8.3 dB. Under this condition, low-phase variation is realized with the root-mean-square (RMS) phase error less than 3° from 24 to 30 GHz. Moreover, the RMS phase error is less than 2° at the desired 5G frequency band from 27.5 to 29.5 GHz. The peak gain is measured with 18.7 dB at 29 GHz. With the max gain setting, the measured OP 1dB and OIP 3 are 5.1 and 9.3 dBm, respectively, and the measured noise figure is from 4.6 to 6.8 dB at the frequency range from 24 to 30 GHz.Keywords
Funding Information
- MIC (JPJ000254)
- National Institute of Information and Communications Technology (00801)
- STAR
- VDEC
- Cadence Design Systems, Inc.
- Mentor Graphics, Inc.
- Keysight Technologies Japan, Ltd
This publication has 10 references indexed in Scilit:
- A 28-GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NRIEEE Journal of Solid-State Circuits, 2020
- A 40-GHz 4-Bit Digitally Controlled VGA With Low Phase Variation Using 65-nm CMOS ProcessIEEE Microwave and Wireless Components Letters, 2019
- A 60-GHz Four-Element Beam-Tapering Phased-Array Transmitter With a Phase-Compensated VGA in 65-nm CMOSIEEE Transactions on Microwave Theory and Techniques, 2019
- A Ka-band CMOS Digital-Controlled Phase-Invariant Variable Gain Amplifier with 4-bit Tuning Range and 0.5-dB Resolution2018
- 2.7 A wideband 28GHz power amplifier supporting 8×100MHz carrier aggregation for 5G in 40nm CMOS2017
- A 60 GHz Low Phase Variation Variable Gain Amplifier in 65 nm CMOSIEEE Microwave and Wireless Components Letters, 2014
- 60-GHz 5-bit Phase Shifter With Integrated VGA Phase-Error CompensationIEEE Transactions on Microwave Theory and Techniques, 2013
- A 57–64 GHz low-phase-variation variable-gain amplifier2012
- A 60 GHz Cascode Variable-Gain Low-Noise Amplifier With Phase Compensation in a 0.13 $\mu{\rm m}$ CMOS TechnologyIEEE Microwave and Wireless Components Letters, 2012
- A 10–50-GHz CMOS Distributed Step Attenuator With Low Loss and Low Phase ImbalanceIEEE Journal of Solid-State Circuits, 2007