A Total-Power Radiometer Front End in a 0.25- μm  BiCMOS Technology With Low 1/f  -Corner

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Abstract

This paper describes the analysis, design, and characterization of a high-sensitivity millimeter-wave total-power radiometer front-end integrated into a 0.25-μm SiGe:C BiCMOS technology. This prototype is composed of a two cascode stage low-noise amplifier (LNA) and a voltage-driven common-emitter square-law detector. The LNA is interfaced to the detector through a low transformation ratio (i.e., high-impedance node) to achieve an efficient wideband signal transfer. The front end achieves both a low 1/f -noise corner and a low noise-equivalent power (NEP) by combining a large area, high resistive value load resistor together with a minimum size heterojunction bipolar transistor. At 56 GHz and optimum bias, the prototype provides a 61-MV/W responsivity which combined with a 194-nV/√Hz white noise level result in a 3.2-fW/√Hz NEP when the input power is modulated with a frequency above the 30-Hz flicker noise corner. The achieved 3-dB NEP bandwidth is 6 GHz.
Original languageEnglish
Pages (from-to)2256-2266
Number of pages11
JournalIEEE Journal of Solid State Circuits
Volume52
Issue number9
DOIs
Publication statusPublished - 2017

Keywords

  • 1/f noise
  • BiCMOS integrated circuits
  • Ge-Si alloys
  • carbon
  • low noise amplifiers
  • millimetre wave amplifiers
  • millimetre wave detectors
  • radiometers
  • semiconductor materials
  • white noise
  • 1/f -noise corner
  • BiCMOS technology
  • LNA
  • NEP
  • SiGe:C
  • bandwidth 6 GHz
  • frequency 56 GHz
  • heterojunction bipolar transistor
  • high-sensitivity millimeter-wave total-power radiometer front-end
  • large area high resistive value load resistor
  • low noise-equivalent power
  • low transformation ratio
  • optimum bias
  • size 0.25 nm
  • two cascode stage low-noise amplifier
  • voltage-driven common-emitter square-law detector
  • wideband signal transfer
  • Antennas
  • Bandwidth
  • Detectors
  • Radio frequency
  • Radiometry
  • Signal to noise ratio
  • Direct detection
  • flicker noise
  • low-noise amplifier (LNA)
  • millimeter-wave (mm-wave)
  • radiometer
  • square-law detector

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