A broadband 24 GHz bandwidth 54 dB gain 180-mW amplifier employing common-collector combined with capacitive controlled cross-coupled feedback in 0.35 µm SiGe technology

Abstract

A 54 dB gain amplifier with a 3-dB bandwidth of 24 GHz is presented in this paper. The amplifier consists of three differential stages employing two different feedback techniques that are responsible for the bandwidth extension, without any noticeable reduction of gain, as well as a relatively flat gain response with negligible increase in area and power consumption. The amplifier consumes 180mW from a 3.3V supply and shows a gain-bandwidth product (GBP) of 12 THz.