Design of double balanced Gilbert cell mixer for WBAN applications

This paper presents an improved design of active RF CMOS double balanced Gilbert mixer. The designed mixer adheres to the IEEE 802.15.6 standard and can be used for WBAN applications, particularly for biomedical applications. The Designed circuit has been optimized for high conversion gain, high linearity and low power consumption. RF frequency used is 2.4GHz that is ISM band. LO frequency is 2GHz with the IF frequency of 400MHz. The designed circuit has high conversion gain of 17.7dB with an input intercept point (IIP3) of 5dBm and 4.67mW of power consumption. The circuit is implemented using 180nm CMOS process with 1.8V power supply.