Design of analog nonlinear transformations based on a Gilbert multiplier for energy detection

This paper focuses on the design of two analog nonlinear transformations dedicated to signal processing such as energy detection: square function and Teager Energy Operator (TEO). Both requiring an multiplier, this firstly analyses equations a MOS Gilbert cell in order operate around mid supply voltage. Considering this, having differential input range ±400 mV, has been designed using AMS 0.35 μm technology voltage (VDD) 3.3 V. It core area 620 μm2 offers power-gating capability, which enables power consumption 2.28 μW when duty cycle 0.25% is considered. Next, TEO, have implemented manufactured cell. The 0.9 mm2 measurement results show that it able compute value its with mean precision 2.92% 5 μs assuming mV common VDD/2. Moreover, generates 700 spikes 200 pulses are applied input. Finally, TEO discrete time equation instead continuous since does not require derivatives computing. 2.2 mm2, active 6.21 mW standby 1.43 nW. Measurement shows until 250