Wideband monolithic microwave integrated circuit frequency converters with GaAs mHEMT technology

摘要

We present monolithic microwave inte-grated circuit (MMIC)frequency converter, which can be used for up and down conversion, due to the large RF and IF port bandwidth. The MMIC converters are based on commercially available GaAs mHEMTtechnology and are comprised of a Gilbert mixer cell core, baluns and combiners. Single ended and balanced configurations DC and AC coupled have been investigated. The instantaneous 3dB bandwidth at both the RF and the IF portof the frequency converters is ∼20GHz with excellent amplitude and phase linearity. The predicted conversion gain is a round 10 dB. Simulated results are supported by experimental characterization. Good agreement is found between simulations and experiment is found after adjustment of technology parameters.