A Low Noise Receiver for Submillimeter Astronomy
- Other:
- Kollberg, Erik L.
Abstract
A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning elements. In its preliminary version the double sideband receiver noise temperature rises from 205 K at 116 GHz to 815 K at 466 GHz. This is the most sensitive broadband receiver yet reported for sub-mm wavelengths. Its multi-octave sensitivity and low local oscillator power requirements make this receiver ideal for remote ground observatories or space-borne telescopes such as NASA's Large Deployable Reflector. A version of this receiver is now being built for NASA's Kuiper Airborne Observatory.
Additional Information
© 1986 Society of Photo-Optical Instrumentation Engineers (SPIE). We are indebted to Dean Neikirk of the University of Texas and David Rutledge of Caltech for discussions about bowties which stimulated this project. At AT &T Bell Labs we thank A. A. Stark for help with SIS mask construction and M. V. Schneider and P. Verlangieri for Schottky diodes used in the LO multipliers. At Caltech we are pleased to acknowledge G. A. Blake's help in the lab and at the Owens Valley Radio Observatory.Attached Files
Published - 27.pdf
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Additional details
- Eprint ID
- 101887
- Resolver ID
- CaltechAUTHORS:20200311-161942632
- Created
-
2020-03-12Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 598