Add to ORKGSpacecraft array fed reflector antenna systems were assessed for particular application to a multiple fixed spot beam/multiple scanning spot beam system. Reflector optics systems are reviewed in addition to an investigation of the feasibility of the use of monolithic microwave integrated circuit power amplifiers and phase shifters in each element of the array feed
The practicability of a multi-frequency antenna for spaceborne microwave radiometers was considered ...
The preliminary design of a 15 meter diameter mechanically scanned, offset rotating, fed parabolic r...
The feasibility of electromagnetic compensation for reflector antenna surface distortions is investi...
The scope of this contract entails a configuration study for a phased array fed transmit antenna ope...
Evaluation of phased array antennas for spacecraft communications and surveillance system
Gregorian, Cassegrain, and single reflector systems were analyzed in configuration studies for commu...
A novel antenna configuration of two reflecting surfaces and a phased array is examined for applicat...
Virginia Tech has several articles which support the NASA Langley effort in the area of large apertu...
Using a computer program which plots beams from antennas located on synchronous satellites onto the ...
The frequency reuse capability is demonstrated for a Ku-band multiple beam antenna which provides co...
A multibeam antenna concept was developed for providing spot beam coverage of the contiguous 48 stat...
The following subject areas are covered: General Reflector Antenna Systems Program version 7(GRASP7)...
Virginia Tech has several activities which support the NASA Langley effort in the area of large aper...
Virginia Tech is involved in a number of activities with NASA Langley related to large aperture radi...
There were several tangible products that resulted from the reflector antenna research program. The ...
The practicability of a multi-frequency antenna for spaceborne microwave radiometers was considered ...
The preliminary design of a 15 meter diameter mechanically scanned, offset rotating, fed parabolic r...
The feasibility of electromagnetic compensation for reflector antenna surface distortions is investi...
The scope of this contract entails a configuration study for a phased array fed transmit antenna ope...
Evaluation of phased array antennas for spacecraft communications and surveillance system
Gregorian, Cassegrain, and single reflector systems were analyzed in configuration studies for commu...
A novel antenna configuration of two reflecting surfaces and a phased array is examined for applicat...
Virginia Tech has several articles which support the NASA Langley effort in the area of large apertu...
Using a computer program which plots beams from antennas located on synchronous satellites onto the ...
The frequency reuse capability is demonstrated for a Ku-band multiple beam antenna which provides co...
A multibeam antenna concept was developed for providing spot beam coverage of the contiguous 48 stat...
The following subject areas are covered: General Reflector Antenna Systems Program version 7(GRASP7)...
Virginia Tech has several activities which support the NASA Langley effort in the area of large aper...
Virginia Tech is involved in a number of activities with NASA Langley related to large aperture radi...
There were several tangible products that resulted from the reflector antenna research program. The ...
The practicability of a multi-frequency antenna for spaceborne microwave radiometers was considered ...
The preliminary design of a 15 meter diameter mechanically scanned, offset rotating, fed parabolic r...
The feasibility of electromagnetic compensation for reflector antenna surface distortions is investi...