CMOS energy detector based on complementary squarer circuit for non-coherent UWB receiver

Abstract

This letter presents a CMOS energy detector for a non-coherent ultra-wideband receiver. The proposed complementary squarer generates differential output using the NMOS and PMOS differential cascode stage with a common-mode feedback (CMFB) circuit. The squarer achieves high gain without DC offset using complementary squarer based on symmetrical NMOS and PMOS transistor pairs with very low power consumption. The proposed squarer with the integrator is designed using the 0.11-µm CMOS technology. The designed squarer with integrator operates at 3–5 GHz and only dissipate 1 mW at a supply voltage of 1.2 V.