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This paper presents a 0.325-THz single-ended amplifier designed in a 28-nm FDSOI CMOS technology. The amplifier consists of four common-source gain stages and utilizes staggered-tuning along with inductive feedback (drain to gate) technique to boost up the gain over a wide frequency band. Having a total power consumption of 28 mW, the amplifier achieves a peak gain of 4.5 dB at 325 GHz. To the best...
This paper reports the development of a cryogenic wideband low-noise amplifier based on a 50-nm metamorphic high-electron-mobility transistor process on gallium arsenide substrates. The amplifier exhibits an average gain of 22.0 dB and a noise temperature of 49 K at an ambient temperature of 15 K in the frequency range 67–116 GHz. The minimum noise temperature of 34 K is reached at the frequency of...
A new waveguide-to-microstrip transducer has been developed using a polytetrafluoroethylene printed circuit board. This can fully cover the W-band (75 GHz-110 GHz), and the transmission loss is typically 0.77 dB. Combining the transducer with a 2nd-order harmonic mixer, a W-band frequency converter has been successfully developed. An up-conversion gain of −20.0 dB and down-conversion gain of −22.3...
This paper presents the design and measurement results of a W-band two-stage differential amplifier using transformers in 28-nm CMOS FDSOI. At 90 GHz, the amplifier achieves 13.8 dB gain, and the input and output return loss are −8.0 dB and −11 dB, repectively. The amplifier obtains +5 dBm saturated output power and 1-dB output compression point of 0 dBm at the centre frequency. From 85 to 95 GHz,...
This paper presents a 124 to 184 GHz single-ended amplifier designed in 28-nm FDSOI CMOS technology. The amplifier consists of four common-source gain stages and broadband matching networks for input, output and inter-stage matching employing slow-wave shielded co-planar waveguides. Having a total power consumption of 31 mW, the amplifier achieves a peak gain of 10.1 dB at 167 GHz and a 3-dB bandwidth...
We present low-noise amplifiers (LNA) that have been developed in the framework of two pre-qualification ESA projects for frequencies between 54 and 229 GHz for the METOP-SG satellite program. The main goal of these satellites is to provide data for operational weather forecast and climate change. Specifically temperature and water vapor measurements can be only achieved by advancing the current state...
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