Search Results - "Bathker, D.A."

The Ultra Cone: An Ultra-Low-Noise Space Communication Ground Radio-Frequency System by Levy, G.S., Bathker, D.A., Higa, W., Stelzried, C.T.

“…Maximum sensitivity was required for the reception of Mariner V signals as it was occulted by the planet Venus. To meet this requirement, an ultra-low-noise…”
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A new technique for vernier pointing of a beam-waveguide antenna by Veruttipong, W., Bathker, D.A.

“…This paper presents a new and simple approach for the Ka-band vernier pointing of a 34 m beam-waveguide (BWG) antenna (also applicable to a 70 m antenna). In…”
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Beam-waveguide antenna performance predictions with comparisons to experimental results by Bathker, D.A., Veruttipong, W., Otoshi, T.Y., Cramer, P.W.

“…An overview of a NASA/JPL antenna project, with specific focus on the methodology used to predict the microwave performance of a 34-m-diameter beam-waveguide…”
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Design considerations for beamwaveguide in the NASA Deep Space Network by Veruttipong, T., Withington, J.R., Galindo-Israel, V., Imbraile, W.A., Bathker, D.A.

“…A generalized solution is found for retrofitting a large dual-shaped reflector antenna for a beamwaveguide. The design is termed as a bypass beamwaveguide…”
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Gaussian beam and physical optics iteration technique for wideband beam waveguide feed design by Veruttipong, W., Chen, J.C., Bathker, D.A.

“…A novel approach is demonstrated which involves iterating Gaussian beam and beam waveguide (BWG) parameters to obtain a wideband BWG feed. The result is…”
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A Stepped Mode Transducer Using Homogeneous Waveguides (Correspondence) by Bathker, D.A.

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A 400 kW Long Pulse X-Band Planetary RADAR by Hartop, R., Bathker, D.A.

“…Selected critical microwave components for a very long pulse (several hours) X-band RADAR system are discussed from a theoretical and practical viewpoint…”
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The High-Power X-Band Planetary RADAR at Goldstone: Design, Development, and Early Results by Hartop, R., Bathker, D.A.

“…Selected critical microwave components for a 400-kW very-long-pulse (several hours) X-band RADAR system are discussed from theoretical and practical…”
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Large ground antenna performance with solar noise jamming by Bathker, D.A., Brown, D.W.

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Low-noise microwave receiving systems in a worldwide network of large antennas by Reid, M.S., Clauss, R.C., Bathker, D.A., Stelzried, C.T.

“…The Deep-Space Network (DSN) consists of a world-wide network of 25- and 64-m antennas spaced approximately 120° around the world. The DSN is a precision…”
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Contributors, Dec. 1976 by Barabas, U., Bathker, D.A., Bosch, B.G., Cox, R.M., East, J.R., Haddad, G.I., Hartop, R., Jolly, S.T., Koyama, M., Langmann, U.K., Macksey, H.M., Mause, K., McMaster, T.F., Nguyen-Ba, H., Ohtomo, I., Oliner, A.A., Paczkowski, J.P., Schneider, M.V., Sebring, J.R., Shindo, S., Smith, R.E., Snell, W.W., Sokolov, V., Hua Quen Tserng, Upadhyayula, C.L., Wellens, U., Wilhelm, J.F., Wisseman, W.R.

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A modern giant Yagi by Hachten, J.E., Ansley, B., Bathker, D.A.

“…A giant HF divided-boom Yagi antenna designed, constructed, and demonstrated by radio amateurs is described. The antenna, designed using the method-of-moments…”
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