40GHz Low Noise Receiver Circuits using BCB Above-Silicon Technology Optimized for Millimeter-wave Applications

This paper presents a low area, low consumption, 40GHz Low Noise Amplifier (LNA), a down-converter and an oscillator, from which the performance of a 40GHz wireless receiver can be estimated. The circuits were realized using a post-processing BCB above-IC technology and 0.13μm SiGe:C BiCMOS HBT process, and their performance are compared with those obtained on circuits without post-processing. The 40GHz LNA exhibits a noise figure of 2.2dB with an associated gain of 17dB and a DC power consumption of 20mW. The measured double-sideband noise figure of the mixer is 4.7dB with an associated conversion gain of 6.5dB and a DC consumption of 4.8mW. The 40GHz oscillator has a phase noise of -107dBc/Hz at 1MHz offset from the carrier measured on a 50 Ohms load. The oscillator output power is 0dBm for a DC consumption of 15mW. Beyond these never published results in term of noise figure at 40GHz, this post-processing technology gives the opportunity to determine the intrinsic noise figure value of the active device (HBT).