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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/884026886 Title: Planar Antenna Technology for mm-Wave Automotive Radar, Sensing, and Communications. Author: Joerg Schoebel; Pablo Herrero Publisher: INTECH Open Access Publisher, 2010. ISBN/ISSN: 9789533070292 9533070293 OCLC:884026886

  
  

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Planar Antenna Technology for mm-Wave Automotive Radar, Sensing, and Communications.

Author:	Joerg Schoebel; Pablo Herrero
Publisher:	INTECH Open Access Publisher, 2010.
Edition/Format:	eBook : Document : EnglishView all editions and formats
Summary:	We have presented a selection of different planar antenna designs with different properties suitable for a multitude of applications in the higher mm-wave range. Beamforming with power dividers or Rotman lenses was discussed in detail. We investigated the focusing properties of the Rotman lens and concluded with a new design concept for the positioning and orientation of the beam ports. Smaller arrays and monopole and dipole elements were demonstrated in the 122 and 140 GHz ranges, which are interesting candidates for future applications in radar and sensing. It was shown that a low-cost approach relying on commercial circuit board processes is feasible. The fabricated antennas generally exhibit properties very close to the design values, so detrimental effects such as fabrication inaccuracies and surface waves can be well under control, even for frequencies as high as 140 GHz. The results shown in this work are generally also applicable to indoor ultra-wideband communications in the 60 GHz band. Here, antenna gains on the order of 15 dBi for transmitter and receiver are required to achieve a sufficiently high signal-to-noise ratio supporting data rates of several Gb/s under today's technological constraints (mainly transmitter power and receiver noise figure). Due to the high gain, the transmission is very directed and may be blocked, e.g. by moving people. This calls for beamsteering solutions such as the Rotman lens, which can be integrated in an essentially flat device setup. Ultimately, such a flat antenna front ends could be easily mounted on a laptop cover lid or in a PCMCIA card.  Read more...
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Subjects	Open Access Collection.
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