Brroadband, High Intercept Points, Cost-Effective Power-Efficient Double Balanced Mixer (DBM)

A high intercept points, cost-effective, and power-efficient switching FET double balanced mixer (DBM) is reported. The Switching FET DBM demonstrated in this work offers input intercepts points (IIP3) and conversion loss typically 43 dBm and 9 dB respectively with 16 dBm LO power for the frequency band (RF: 900-2650 MHz, LO: 850-2450 MHz, IF: 50-200 MHz). The measured interport isolation is typically better than 30 dB for broadband applications, and the circuit topology is not limited to these frequencies, and can be easily extended 3rd and later generation of communication systems.