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- Path: sparky!uunet!europa.asd.contel.com!emory!athena.cs.uga.edu!mcovingt
- From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
- Newsgroups: sci.electronics
- Subject: Re: coating materials for antennas
- Summary: Aluminum in aluminum oxide is OK
- Keywords: antennas materials
- Message-ID: <1992Aug29.013405.19453@athena.cs.uga.edu>
- Date: 29 Aug 92 01:34:05 GMT
- References: <1992Aug28.205111.26384@alw.nih.gov>
- Organization: University of Georgia, Athens
- Lines: 14
-
- The usual practice with aluminum antennas is not to coat them. They
- coat themselves with aluminum oxide. I don't see how the skin effect
- would be any different with aluminum in oxide than with aluminum in air.
- (The aluminum oxide is a very good insulator.)
-
- Now of course you would have skin effect problems if the coating were
- somewhat conductive (but less so than the metal) and the transition
- from metal to coating were not sharp. But I haven't heard of this kind
- of problem with aluminum.
-
- --
- + Michael Covington - Artificial Intelligence Programs - U of Georgia - USA
- + Unless otherwise noted, these are private opinions, not official statements.
- + VOTE NO GEORGIA LOTTERY - we need not imitate mistakes of other states.
-