An ultra broadband upconverter MMIC has been designed, realized and measured using a 0.25 µm PHEMT process on GaAs . It contains a switch, amplifiers, a step attenuator, filters, and mixer. The input frequency band is 2- 12 GHz and the output frequency band is 8-18 GHz. The input signal, selectable using a switch, is amplified and converted from 2-12 GHz to 18-8 GHz. An attenuator is used to increase the dynamic range of the circuit. Measured performance shows full functionality with an overall gain better than 30 dB and with a noise figure of 5 dB. The work was part of a CEPA project
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