5.7 GHz GaInP/GaAs HBT sub-harmonic Gilbert downconverter with octet-phase LO generator

摘要

A 5.7 GHz GaInP/GaAs heterojunction bipolar transistor (HBT) sub-harmonic Gilbert downconversion mixer with octet-phase LO generator is demonstrated. The conversion gain is 15 dB, ⅠP_(1dB) is -13 dBm, ⅡP_3 is 0 dBm, and ⅡP_2 is 24 dBm when the LO power equals 3 dBm. The measured IF quadrature output waveforms indicate that the phase difference between the in-phase and quadrature-phase output channels is only 1.3°.