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140 GHz solid-state amplifier with on-chip tunable output matching

: Diebold, S.; Massler, H.; Wagner, S.; Tessmann, A.; Leuther, A.; Kallfass, I.

TU Wien:
Integrated Nonlinear Microwave and Millimetre-wave Circuits, INMMIC 2011. Conference Proceedings. CD-ROM : Workshop; Vienna, April 18th - 19th, 2011
Vienna, 2011
ISBN: 978-1-4577-0648-6
Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC) <2011, Vienna>
Fraunhofer IAF ()
monolithic microwave integrated circuit (MMIC); millimeter wave circuit

For application at frequencies around 140 GHz, a solid-state amplifier with variable output matching was developed. Its output matching network makes use of a capacitively loaded shunt switch in series and a shunt switch in parallel. By variation of the control voltages of the series and parallel switches, the output impedance continuously can be changed in a wide range. This makes the circuit very versatile. It can be applied to runtime tuning of the amplifier and transistor model verification.