Abstract
This paper presents a folded-cascode mixer for an ISM band transmitter that translates the signals at the 2.4 GHz band to 5.8 GHz. Comparing to the conventional Gilbert cell mixer, our proposed folded-cascode mixer architecture with DC offset blocking, and transconductance linearization techniques can effectively suppress the LO feedthrough by 9 dB. The proposed mixer is designed in 0.11 μm CMOS and consumes 2.6 mA from a 1.2 V supply. The simulation results show that the mixer achieves an output power of 4.7 dBm, and all the emission spurs are well below −40dBc.
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