A Beamforming Receiver Using a Time-Modulated LO-Path Vector Modulator Achieving Amplitude and Phase Control with 0.2 dB RMS Gain Error and 1.4 Degree RMS Phase Error

Beamforming receivers use the spatial domain to increase sensitivity, reject spatial interferers, and increase communication to multiple users simultaneously with multiple beams. Conventional vector modulators (VM) consisting of multiple gain slices are used for phase and amplitude control. The numb...

Full description

Saved in:
Bibliographic Details
Published in2024 IEEE Custom Integrated Circuits Conference (CICC) pp. 1 - 2
Main Authors Barac, Petar, Bajor, Matthew, Haque, Tanbir, Kinget, Peter R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.04.2024
Subjects
Array signal processing
Phase control
Phase modulation
Prototypes
Receivers
Sensitivity
Switches
Online AccessGet full text

Cover

More Information
Summary:Beamforming receivers use the spatial domain to increase sensitivity, reject spatial interferers, and increase communication to multiple users simultaneously with multiple beams. Conventional vector modulators (VM) consisting of multiple gain slices are used for phase and amplitude control. The number of slices grows as a product of each additional beam, antenna element, and bit of resolution, resulting in significant area and power consumption. We use time-modulation techniques to break the area and VM-resolution tradeoff and have implemented a proof-of-concept prototype of our time-modulated LO (TM-LO) architecture in 65nm. Existing spatio-temporal techniques employ fast-beam switching implemented at the system level [1]. The TM-LO uses time-modulated techniques at the circuit level to enable amplitude and phase control for beam steering.
ISSN:2152-3630
DOI:10.1109/CICC60959.2024.10529025