A 23 G Hz RF - beamforming Transmitter with > 15.5 dBm \mathrm} and >21.7% Peak Efficiency for Inter-satellite Communications

This paper presents a 23GHz RF -beamforming transmitter (TX) for inter-satellite communications. By combining a variable gain amplifier (VGA), a phase shifter (PS), and a four-inductor-coupling differential quadrature-signal (IQ) generator, a power-efficient design with high compactness is demonstra...

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Bibliographic Details
Main Authors: Ding, Kaijie, Milosevic, Dusan, Vidojkovic, Vojkan, van Dommele, Rainier, Bentum, Mark, Baltus, Peter
Format: Conference Proceeding
Language:English
Subjects:
Generators
inter-satellite communications
Measurement uncertainty
Power amplifiers
Power measurement
Radio frequency
Radio transmitters
Radiofrequency integrated circuits
SiGe BiCMOS
transmitter (TX)
Online Access:Request full text
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Summary:This paper presents a 23GHz RF -beamforming transmitter (TX) for inter-satellite communications. By combining a variable gain amplifier (VGA), a phase shifter (PS), and a four-inductor-coupling differential quadrature-signal (IQ) generator, a power-efficient design with high compactness is demonstrated. The chip is fabricated in a 130nm SiGe BiCMOS technology. It achieves a measured saturated output power (Psat) of >15.5dBm and a peak TX efficiency of >21.7%, with 2.09° RMS phase error and >29.3dB maximum power gain. The realized mm-wave TX supports 64-QAM with a 900Mbps data rate, the Error Vector Magnitude (EVM) of 4.98% (-26.06dB), the Adjacent Channel Power Ratio (ACPR) of −30.1dBc, and TX efficiency of 8.52% are measured at 9.2dBm output power. The core area of this TX is 0.9mm x 0.23mm.
ISSN:2375-0995
DOI:10.1109/RFIC54546.2022.9863123