Applications in millimetre wave range and terahertz frequencies keep on increasing. In this context, drastic challenges are faced at measurement level, in particular to extract noise performance and nonlinear properties of devices and circuits used to build the required systems. The aim of this talk is to provide an overview of these challenges, and to describe the solutions that we have developed to respond to them.
A new approach of millimeter wave (mmW) integrated active noise source (NS) is introduced for noise characterization up to 170 GHz. This NS is based on a diode biased in avalanche regime in BiCMOS 55 nm (B55) technology from STMicroelectronics. In order to increase the noise sensitivity of setup using this NS, a two-stage cascode Low Noise Amplifier (LNA) composed of 4 high speed NPN transistors is cascaded at its output, targeting high available Excess Noise Ratios ( . ENRav levels have been extracted, showing tunable values ranged between 0 dB to 37 dB in the 140-170 GHz frequency range.
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