A DC-6 GHz, 50 dB dynamic range, SiGe HBT true logarithmic amplifier


In this work, a DC-6 GHz true logarithmic amplifier is presented. The amplifier uses a branch parallel summation architecture with four gain paths, and provides a piecewise approximate logarithmic response. The amplifier has 39 dB gain, 12.5 dB noise figure, 6.5 mV/dB logarithmic slope, and 50 dB logarithmic dynamic range. The amplifier uses Cherry-Hooper… (More)


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