A 36–91 GHz Broadband Beamforming Transmitter Architecture With Phase Error Between 1.2°–2.8° for Joint Communication and Sensing

A 36–91 GHz Broadband Beamforming Transmitter Architecture With Phase Error Between 1.2°–2.8° for Joint Communication and Sensing

clockVolume: 72, Issue: 1, January 2024

authorZheng Liu

A 36–91 GHz Broadband Beamforming Transmitter Architecture With Phase Error Between 1.2°–2.8° for Joint Communication and Sensing

Abstract
DOI: 10.1109/TMTT.2023.3324428   IEEEXplore: https://ieeexplore.ieee.org/document/10296479
Device
Ultra-wideband (UWB) beamforming transmitter in 90-nm SiGe BiCMOS operating from 36 to 91 GHz with extremely low phase error comprising a variable gain amplifier (VGA) with a tailored frequency response, a UWB 5-bit vector modulator phase shifter, and a power amplifier (PA) enabled by inverse design method.
Spectrum
5G FR2 to W-band (30 to 100 GHz)
Novelty
Precise phase control over the wide bandwidth is achieved with a 90° hybrid Marchand balun-based bandwidth extension network for ultra-wideband I/Q signal generation.
Performance
87% FBW, 0.5 LSB maximum phase error, 1.2° to 2.8° RSM phase error; 30-35 dB gain with 10 dB gain control, 0.24-0.35 dB RMS gain error; 9-13.5 dBm OP1dB, supporting 10.8 Gbps 64 QAM modulation with -25.6 dB EVM with 4 dBm Pavg at 60 GHz.