  This paper reports the design and experimental characterization of a
cryogenic compact low-power 60GHz amplifier for control of electron/hole spin
qubits, as elementary building block for monolithic Si quantum processors.
Tested at 2 K, the amplifier exhibits S21 of 15 dB at 59 GHz, BW3dB of
52.5-67.5 GHz, and power consumption of 2.16 mW. Owing to the topology with
inductorless active network, the amplifier has a compact core area of 0.18 x
0.19 mm2.
