A 240 GHz Down-Conversion Mixer in 0.13 μm SiGe BiCMOS Technology

This paper presents an active, fundamental down – conversion mixer based on Gilbert cell topology at 240 GHz. It is implemented in a 0.13 μm SiGe BiCMOS technology with fT/fmax of 300/450 GHz. For an LO power of -4 dBm at the frequency of 235 GHz and RF power of -30 dBm at 240 GHz, the maximum measured conversion gain and 1-dB compression point referred to input (IP1dB) are 9.4 dB and -10 dBm, respectively. The mixer core occupies an area of only 0.022 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and dissipates a power of 11 mW.