Citation
Abstract
A traveling-wave maser operating at 15.3 GHz has been used to test the noise temperature contribution of various waveguide components. An assembled system, consisting of the maser, a directional coupler, a waveguide switch, a polarizer, and a feed horn, measured 23 K total system operating noise temperature. Previously measured X-band data are shown for comparison. The maser was installed on the 64-m antenna at the Goldstone DSCC. Maximum changes of 2.2 deg signal phase and 0.25 dB signal amplitude were observed during antenna motion tests for maser phase and gain stability. The excellent stability performance is attributed to the use of a superconducting maser magnet.
Details
- Volume
- VI
- Published
- December 15, 1971
- Pages
- 118–122
- File Size
- 404.2 KB