MILLIMETER WAVE
INSTRUMENTATION LAB


REDSHIFT tour page 1 2 3 4 5


Back to the Instrumentation Page


Back to the FCRAO Home Page


Back to the Astronomy Dept. Home Page


Send mail to the Webmaster


Last Modified: Monday, 19-Dec-05 1:05:31 PM EDT



This material is based on work supported by the National Science Foundation under Grant AST-0096854.

Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of the National Science Foundation.

REDSHIFT SEARCH RECEIVER

MMIC Based Preamplifiers

  • Each pixel is comprised of two MMIC amplifiers as used in SEQUOIA, with interstage and input isolators.
  • Amplifiers of different designs are cascaded to minimize gain ripple (105LN1PQ and 100LN8).
  • Ripple in the noise is due to interaction with the input isolator.

Noise temperature of the four receiver amplifiers referenced to the isolator input,
not including OMT, rotator or horn




Inside the dewar.
The feedhorns are on the right (gold) and the four waveguide outputs are at the top.


Previous Next
Continue the REDSHIFT tour...