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Polycarbonate (PC) Applications ©

From 12/17/2014 to xx/xx/xxxx

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12/17/2014

U.S. Patent 8,904,887 (December 9, 2014), “Radio Frequency Transparent Thermal Window,” Michael A. Tockstein, James P. Nokes, Jon V. Osborn, Dhruv N. Patel, Alan R. Hopkins, John S. Williams, and Gary N. Harper (The Aerospace Corporation, El Segundo, California, USA).

Manufacturers of electronic components for eventual use in spacecraft have developed various methods for simulating space-like conditions here on Earth, into which such electronic components may be inserted during testing. For example, some manufacturers use systems in which a space-like vacuum may be established in a chamber that may also be cooled to space-like temperatures. However, vacuum and thermal chambers typically are made of metal or other conductive substances, and are found to interfere with radio signals passing between the device under test and the reciprocal radio transmitter-receiver outside the chamber when testing the performance of a device with respect to transmission and reception of radio frequency signals via antennae.

Tockstein et al of the Aerospace Corporation, developed a radio-frequency transparent window having internal conduits for the passage of cooling fluid is configured for simulating a highly uniform thermal environment for testing a device intended for use in space.  Both the pressure window  and the thermal window are formed from material that is radio frequency ("RF") transparent, preferably polycarbonate, in a physical configuration that is described in detail more fully below.   Note:  At least the  bisphenol A should not be a problem here!

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Interested!!
Bookmark this page to follow future developments!.
(RDC 7/16/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

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Tel: 610 363 9920
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E-Mail: cornelrd@bee.net  

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Copyright 2013 by Roger D. Corneliussen.
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