RF characteristics of the hoop column antenna for the land mobile satellite system mission

  • 61 Pages
  • 4.40 MB
  • 5960 Downloads
  • English
by
National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] , Washington, D.C, [Springfield, Va
Artificial satellites in telecommunication., Telecommunica
StatementPeter Foldes.
SeriesNASA contractor report -- 3842., NASA contractor report -- NASA CR-3842.
ContributionsUnited States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., Foldes Incorporated., Langley Research Center.
The Physical Object
Paginationiii, 61 p. :
ID Numbers
Open LibraryOL15317548M

RF Characteristics of the Hoop Column Antenna for the Land Mobile Satellite System Mission Peter Foldes Foldes Incorporated Wayne, Pennsylvania Prepared for Langley Research Center under Contract NAS I National Aeronautics and Space Administration Scientific and.

RF characteristics of the hoop column antenna for the land mobile satellite system mission. Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.: For sale by the National Technical Information.

Get this from a library. RF characteristics of the hoop column antenna for the land mobile satellite system mission.

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[Peter Foldes; Langley Research Center.; United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.; Foldes Incorporated.]. This extensively revised and expanded edition of the Artech bestseller Mobile Antenna Systems Handbook puts the very latest technologies, design and analysis procedures, and applications at your command.

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Antenna System for Land Mobile Satellite Communications 35 communication technologies adopted by ETS-VIII are expected to benefit our daily life in the field of communications, broadcasting, and Cited by: 2. System Performance--A complete system performance analysis of the four antenna concepts for the CMSS mission was performed.

the various features and attributes of this class of large space antennas. It resulted in a comparison of Mass and structural data for the four structural designs are summarized in figure 6.

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The antenna element itself is a simple quadrilateral monopole, in the shape of a wedge, with a narrow start and a wider end.

For lack of a common nomenclature and a relatively close optical proximity to a log-per design, this type is going to be ignorantly called monopole is “glued” onto a self-adhesive, semirigid, matte-white material and then rolled to a cylinder with.

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Antenna - Land Mobile. The Antenna page must be completed only when an antenna is to be added, modified, or deleted. If you do not need to add, modify, or delete antenna information, click the Next Page button at the bottom of the screen.

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The Switched Beam System The proposed Switched Beam System uses the Butler matrix network for the beamforming procedure, [2,3,4,5]. The system’s basic demand is the pointing of the beam both in azimuth and in the elevation direction.

For this reason, two alternative system topologies are considered. The first proposed system consists of an 8x8. Antenna Basic Concepts ANTENNA An antenna is a device to transmit and/or receive electromagnetic waves. Electromagnetic waves are often referred to as radio waves.

Most antennas are resonant devices, which operate efficiently over a relatively narrow frequency band. An antenna must be tuned (matched) to the same frequency band as the radio. A transceiver using antenna diversity can transmit from only one antenna at a time.

If it transmitted from both antennas, the two signals would interfere with each other.

Description RF characteristics of the hoop column antenna for the land mobile satellite system mission EPUB

A transceiver can also interpret only one signal at a time, so it samples the signals received by both antennas and chooses the.

Mobile satellite communications Telephony Multimedia Broadband C band Ka band Ku band L, S + Ku band* Ku-Ka band the antenna efficiency. A double reflector system can be used to minimise the phase differences while increasing amplitude variations and still produce a contoured beam.

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