High dynamic range SiGe downconverter with power efficient 50 /spl Omega/ IF output buffer

This paper presents the design and measurement results of a high dynamic range down conversion mixer intended for use e.g. in W-CDMA. basestations. The mixer has been realized in Atmel's 50 GHz f/sub t/=f/sub max/ foundry SiGe technology. Power matching resistors at all three ports provide excellent broadband power match without need for external matching networks. Measured key performance parameters are a single sideband noise figure (SSB NF) of 12.9 dB, an output referred third order intercept point (OIP/sub 3/) of +30.1 dBm and an output referred compression point (P/sub -1dB/) of +17.1 dBm.