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Method to Improve the Linearity of Active Commutating Mixers Using Dynamic Current Injection
A double balanced (DBM) CMOS mixer providing high linearity is presented in this paper. A cross-coupled pair used in the IF stage of the mixer to dynamically inject current into the to mixer provide a high linearity. The ...
Variable 360° Vector-Sum Phase Shifter With Coarse and Fine Vector Scaling
A CMOS vector-sum phase shifter covering the full 360° range is presented in this paper. Broadband operational transconductance amplifiers with variable transconductance provide coarse scaling of the quadrature vector ...