A 2.4 GHz monolithic mixer for wireless LAN applications

A class AB downconversion mixer for 2.4 GHz wireless LAN applications is presented. The circuit is implemented in a 13 GHz f/sub T/ BiCMOS process, and consumes 7.9 mA total current from a 3 V supply. A single-balanced design using bond-wire degeneration in the common-emitter driver stage is optimal for power consumption and noise figure. The design has a power gain of 4.5 dB, a single-side band noise figure of 10 dB, an input third-order intercept point of 1 dBm, and an input 1 dB compression point of -7.5 dBm.