Ka-Band Atmospheric Noise Temperature Measurements at Goldstone, California, Using a 34-Meter Beam-Waveguide Antenna
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power radimeter (TPR)↗
Engineering topics
Clauss, R.
Publications and source records attributed to Clauss, R..
Ka-Band Atmospheric Noise Temperature Measurements at Goldstone, California Using a 34-meter Beam Waveguide Antenna
(View graphs) NASA's Deep space missions have used 960 MHz, 2.3 GHz, and 8.4 GHz for spacecraft communications dowlinks. Ka-band (32 GHz) is being considered as a downlink frequency for future flight projects.
Ka-band Deep Space Network atmospheric effects Sur↗
DSN G/T(sub op) and telecommunications system performance
Provided here is an intersystem comparison of present and evolving Deep Space Network (DSN) microwave receiving systems. Comparisons of the receiving systems are based on the widely used G/T sub op figure of merit, which is defined as antenna gain divided by operating system noise temperature. In 10 years, it is expected that the DSN 32 GHz microwave receiving system will improve the G/T sub op performance over the current 8.4 GHz system by 8.3 dB. To compare future telecommunications system end-to-end performance, both the receiving systems' G/T sub op and spacecraft transmit parameters are used. Improving the 32 GHz spacecraft transmitter system is shown to increase the end-to-end telecommunications system performance an additional 3.2 dB, for a net improvement of 11.5 dB. These values are without a planet in the field of view (FOV). A Saturn mission is used for an example calculation to indicate the degradation in performance with a planet in the field of view.
Stelzried, C.↗
Simple waveguide reflection maser with broad tunability
The design and performance of a simple two-stage reflection maser for use between 9 and 10 GHz are described. The maser is used to improve the sensitivity of a transmission electron spin resonance spectrometer. A ruby-filled waveguide structure permits broad tunability and straightforward construction. All microwave components except the ruby section are at room temperature.
Flesner, L. D.↗
Microwave maser development - Traveling wave maser for the Venus Deep Space Station
Traveling wave maser for 85-foot antenna at Venus deep space station
WAVEGUIDE ANTENNA↗
Cryogenic waveguide window is sealed with plastic foam
Waveguide windows made with polystyrene preformed plastic and sealed with foamed-in-place plastic are useful in any microwave waveguide system using cryogenic cooling.
Clauss, R.↗
Double-throw microwave device switches two lines quickly
By combining a single-throw microwave switch with a microwave circulator in a circuit, two input lines can be switched quickly. There is only a brief transition time when both /or neither/ of the two lines are connected to an output line.
Clauss, R.↗