Apollo LM and CSM S-band antenna tracking studies. CSM-HGA interchangeability study antenna and RF circuitry analysis
Mathematical model for radio frequency circuitry of Apollo high gain antenna system
Osborn, J. D.↗
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Remarks on the application of RF spectroscopy of stored ions to frequecy standards
Development of portable atomic clock containing electromagnetically trapped ions
Major, F. G.↗
Fabrication of electroacoustic RF amplifiers
Anodic bonding of a lithium niobate piezoelectric crystal over a silicon-on-sapphire structure with the crystal mounted over a closely controlled oxide provides a point-contact mount for two rectangular slabs /one piezoelectric and the other a silicon semiconductor/ within 600 A of each other.
Trent, R. L.↗
Spacecraft S-band 10-100 W RF amplifier tubes
Spacecraft S band power amplifier TWT electrical, environmental and life tests under saturated conditions
Hughes, R. S.↗
Aerial rf noise measurement in urban areas at uhf frequencies
Aerial and ground UHF noise measurement in Phoenix area, correlating air and ground data
Anzic, G.↗
RF parameter study in support of Structures for Orbiting Radio Telescopes /SORT/ Final report, 28 Jan. - 28 Oct. 1970
Parametric tradeoff study for design of orbital low frequency radio telescope
Andre, S. N.↗
Parametric analysis of RF communications and tracking systems for manned space stations Final report, 5 Jan. 1970 - 5 Jan. 1971
Design of radio frequency communication systems for manned space station
Eggert, D.↗
Space station RF hazards
Harmful biological effects caused by exposure to microwave radiation including radio frequency power density in vicinity of space station antennas
Inman, R. A.↗
Development of a high intensity RF radiant energy source for simulating the thermal environment of the nuclear light bulb reactor
Radio frequency induction heating plasma generator design and fiber optic scanner for simulation of nuclear light bulb engines
Roman, W. C.↗
Improved RF calibration techniques: System operating noise temperature calibrations
System operating noise temperature calibrations of S band research operational cone at Venus Deep Space Station and polarization diversity S band cone at Mars Deep Space Station
Reid, M. S.↗
Construction of simple rf vacuum feedthrough
Matched impedance microwave vacuum feedthrough
Brown, V.↗
Broadband RF-distribution amplifier
Radio frequency amplifier to distribute reference frequencies within communications systems and provide automatic gain control with low phase distortion is described. Use of photocell in electronic circuit to produce desired conditions is explained. Operation of entire amplifier circuit is analyzed.
Lutes, G. F., Jr.↗
Interferometer using RF switching matrix
Radio frequency switching technique for single receiver and data processing channel to be used for phase movement measurement is discussed. Components of interferometer radio frequency unit, X-band receiver, and interferometer data processing unit are illustrated. Elimination of major measurement error source is described.
Vanvleet, R. N.↗
A guide to onboard checkout. Volume 7: RF communications
The radio frequency communications subsystem for a space station is considered, with respect to onboard checkout requirements. The subsystem comprises all equipment necessary for transmitting and receiving, tracking and ranging, command, multiple voice and television information, and broadband experiment data. The communications subsystem provides a radio frequency interface between the space station and ground stations, either directly or indirectly, through a data relay satellite system, independent free-flying experiment modules, and logistics vehicles. Reliability, maintenance, and failure analyses are discussed, and computer programming techniques are presented.
Source record↗
Investigation of techniques for improving Saturn 5 RF tracking and ranging systems
Results of theoretical analyses of 12 problems are presented and comparisons of theoretical and experimental results are given. The investigations covered were: (1) techniques for improving the Saturn radar altimeter, (2) performance of the phase lock loop of the offset Doppler transponder, (3) signal processing equipment design for an orbital altitude radar return experiment, (4) spectral studies of signals present in the command and communication system (CCS) up-link transmitter, (5) intermodulation in the CCS down-link data demodulators, (6) error rate performance of the CCS transponder command demodulator, (7) flame attenuation effects on telemetry transmissions during Saturn launches, (8) design of a digital television system which converts a standard monochrome picture to a slow-scan picture, (9) methods of obtaining an additional CCS 72-kilobit/sec telemetry channel, (10) computation of the CCS S-band down-link spectra, (11) modeling of portions of the communications systems, and (12) modeling of a telemetry transmitter.
Walsh, J. R., Jr.↗
Station to instrumented aircraft L-band telemetry system and RF signal controller for spacecraft simulations and station calibration
An L-band telemetry system designed to provide the capability of near-real-time processing of calibration data is described. The system also provides the capability of performing computerized spacecraft simulations, with the aircraft as a data source, and evaluating the network response. The salient characteristics of a telemetry analysis and simulation program (TASP) are discussed, together with the results of TASP testing. The results of the L-band system testing have successfully demonstrated the capability of near-real-time processing of telemetry test data, the control of the ground-received signal to within + or - 0.5 db, and the computer generation of test signals.
Scaffidi, C. A.↗
RF multicoupler design techniques to minimize problems of corona, multipaction, and stability
A mathematical expression was derived describing multipacting and corona effects in a coaxial cavity. Both mechanical and electrical design techniques were investigated to minimize the susceptibility of coaxial cavity to corona and multipacting-type breakdown. To assist in the design of a multicoupler free from corona and multipactor breakdown, a flow chart obtained from the derived mathematical expression is included.
Hurley, H. S.↗
A 10, 6-micrometer laser receiver RF subsystem
A simplified laser receiver carrier tracking loop is described. The laser carrier is optically mixed with a locally generated 10.6 micrometer signal, thereby translating the received signal to an IF signal that varies between dc and GHz. This signal is fed to a second order carrier tracking loop that contains a transistor LC oscillator tuned by a varactor over a 1 GHz range; transistor shunt capacitance increases the upper frequency bound of the oscillator in a high Doppler environment.
Santarpia, D. E.↗