The aerospace low-noise millimeter-wave spectral line receiver
Abstract
The design and operation of a low-noise mm-wavelength spectral line receiver for aerospace research (studying narrowband signals from molecules present in the interstellar medium and in planetary atmospheres - including the earth's) is described, and some representative results are presented. Subsystems of the receiver include: RF system, IF system, local oscillator phase-locking system, multichannel filter receivers, and data processing system. The receiver is used with a 4.6 meter mm-wavelength antenna and includes a single-ended mixer using a GaAs diode mounted in 1/4 height WR-10 waveguide.
- Publication:
-
IEEE Transactions on Microwave Theory Techniques
- Pub Date:
- April 1977
- DOI:
- 10.1109/TMTT.1977.1129096
- Bibcode:
- 1977ITMTT..25..332W
- Keywords:
-
- Interstellar Matter;
- Low Noise;
- Millimeter Waves;
- Molecular Spectra;
- Planetary Atmospheres;
- Superheterodyne Receivers;
- Data Processing;
- Earth Atmosphere;
- Intermediate Frequencies;
- Line Spectra;
- Phase Locked Systems;
- Radio Astronomy;
- Instrumentation and Photography