Earth coverage patterns with high-gain antennas on stationary satellites
Earth coverage patterns with high-gain antennas on stationary communications satellites
COMMUNICATIONS SATELLITE↗
SEARCH · Search NASA
Results for “High-Gain”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
High-gain amplifier has excellent stability and low power consumption
Transistorized amplifier, in which an external reference voltage controls gain, combines high gain with stability and low power consumption. This circuit is useful in electronic servo and portable audio equipment.
Kleinberg, L. L.↗
High-gain spacecraft antenna design and development final report
Expandable directional high gain spacecraft antenna
ANTENNA↗
High-gain, self-steering antenna system, engineering model Design review report
Engineering model design of high gain self- steering antenna array for satellite communication applications
STEERABLE ANTENNA↗
A high-gain omnidirectional satellite antenna technique Final report
High gain omnidirectional satellite system design, using planar and circular multiple beam arrays and solid state switching
OMNIDIRECTIONAL ANTENNA↗
Light-controlled resistors provide quadrature signal rejection for high-gain servo systems
Servo amplifier feedback system, in which the phase sensitive detection, low pass filtering, and multiplication functions required for quadrature rejection, are preformed by light-controlled photoresistors, eliminates complex circuitry. System increases gain, improves signal-to-noise ratio, and eliminates the necessity for compensation.
Mc Cauley, D. D.↗
Rectangular-bore, high-gain laser plasma tube
Rectangular-bore tube improves population inversion obtained from upper and terminal laser states, resulting in a significant increase in unsaturated gain factor. Radial field produces efficient pumping of upper laser state. Narrow tube dimensions cause increased diffusion flow of neon is metastable states to tube walls.
Mollo, R. A.↗
High-gain self-steering microwave repeater, volume 1 Final engineering report, Jan. 1966 - Apr. 1969
Engineering model of high gain self steering microwave transponder and application to satellite communication links
Birgenheier, R. A.↗
A high-gain self-steering microwave array.
High gain self steering repeater for multibeam microwave array system for earth-satellite communications
Birgenheier, R. A.↗
A high-gain self-steering microwave repeater.
High gain self steering microwave repeater for earth-satellite communications noting design, performance and results of color TV transmissions
Birgenheier, R. A.↗
Apollo 13 mission high-gain antenna acquisition problem - Anomaly report 2
High gain antenna acquisition problem during Apollo 13 flight
Source record↗
High-gain, broadband traveling wave maser Patent
Comb type traveling wave maser amplifier for improved high gain broadband output
Clauss, R. C.↗
Observation of intense superradiant emission in the high-gain infrared transitions of HF and DF molecules
Intense superradiant emission in HF and DF molecules high gain IR transitions, examining spectral distributions with pneumatically tuned Fabry-Perot interferometer
Goldhar, J.↗
Development and testing of the S-band antenna subsystem for the Mariner Mars 1971 spacecraft
The Mariner Mars 1971 S-band antenna subsystem is used to transmit and receive S-band signals to and from the Deep Space Instrumentation Facility ground stations. The antenna subsystem consists of a low-gain antenna, a medium-gain antenna, a directional coupler, a high-gain antenna, and all transmission lines required to interconnect the antennas to the spacecraft radio frequency subsystem. The low-gain antenna is used to transmit signals during cruise and receive signals throughout the mission. The medium-gain antenna is coupled to the low-gain antenna via the directional coupler and is used to transmit and receive signals during Mars orbit insertion. The high-gain antenna is used to transmit high data rate signals primarily during Mars orbit.
Brejcha, A. G.↗
Fluidic analog amplifier
Five-stage, high-gain, push-pull fluidic amplifier provides increased range and improved linearity. The fluidic amplifier was designed to operate in conjunction with a fluidic transducer.
Mc Kenzie, C. P.↗
Technique for lowering the noise figure in RF amplifiers
Low-level RF amplifiers are operated at noise figures at or near the theoretical minimum, while maintaining high-gain stability. Formulas for the minimum amplifier noise figure value are derived from the analytical noise-figure expression involving the parameters of the equivalent circuit representing the actual system.
Bellomo, A. F.↗
Antenna drive system for the Nimbus satellite
This paper describes a two-axis drive system for pointing a high-gain antenna. Motion about each axis is provided by identical drive mechanisms. The drive is unique in that only three gear passes are required to obtain the necessary 900:1 gear reduction. The drive system is a primary element of an experiment that will provide a real-time data link between Nimbus and certain ground stations. In this experiment data are transmitted from Nimbus to the applications technology satellite, which relays the data to ground stations.
G. J. Wedlake↗
Directive gain of circular Taylor patterns.
The practicality of various classes of planar aperture distributions in high-gain antenna design is discussed, and optimal circular Taylor distributions are illustrated. In particular, the directive gain of circular Taylor patterns is determined. It is shown that so-called optimum patterns - i.e., uniform sidelobes in all planes, are severly limited for planar apertures because of excessive sidelobe power. The optimum directive gain of the circular Taylor pattern with a given sidelobe level can be obtained by appropriate design.
Rudduck, R. C.↗