We present and analyze a gedanken experiment and show that the assumption that an antenna operating at a single frequency can transmit more than two independent information channels to the far field violates the Second Law of Thermodynamics. Transmission of a large number of channels, each associated with an angular momenta ‘twisted wave’ mode, to the far field in free space is therefore not possible.
Comments: 5 Pages. accepted for publication in PLoS ONE
[v1] 2012-09-28 22:04:20
[v2] 2012-09-29 10:46:00
[v3] 2012-10-01 12:13:13
[v4] 2012-10-01 22:49:58
[v5] 2012-10-06 15:08:02
[v6] 2012-10-06 15:23:12
[v7] 2012-10-09 09:06:14
[v8] 2012-11-21 20:49:43
[v9] 2012-11-27 20:08:20
[vA] 2013-01-03 15:35:24
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