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Microcap & Penny Stocks : Integral Technologies
ITKG 0.01300.0%Mar 26 5:00 PM EST
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To: RobertP who wrote (149)2/21/1998 9:03:00 AM
From: Terry Lyon  Read Replies (2) of 1108
 
While I own shares of both IASCA and ITKG I am not convinced of this technology.

I'm an Electromagnetic (E&M) physicist and have spend 30 years studying compact antennas as a hobby. Conventional antennas become highly inefficient at launching a wave as their size is reduced although their theoretical gain does not diminish significantly. Thus, in theory one could produce an electrically small antenna which radiates well but often this cannot be accomplished in practice to provide a reasonable bandwidth when the size is significantly reduced.

I have been building and testing compact antennas which have very high efficiencies but even my compact antennas are relatively large by comparison to theirs which appears to behave as an isotropic antenna. E&M students are taught that an efficient isotropic antenna is impossible in practice but the concept of isotropic antennas is taught anyway.

Also I understand the mechanism for radiation from a linear antenna as each small current element along the conductors path adds together to create an E&M field at some distance from the antenna. While the math is cumbersome, the concept is not hard to understand.

Physics sometimes presents some unusual situations and this antenna may just be one of them. To me this antenna looks like a lossless dummy load with all the fields being cancelled near the antenna. However the power supplied has to go somewhere - radiated power + power lost + reflected power = power supplied. Therefore if no power is lost to heat or no power is reflected back to the source then the energy would have to be radiated. I can't explain how the power could be radiated but often power cancelled at one location might appear away from the antenna.

You might say I am cautiously optimistic but I don't really understand it and as they say - if it is too good to be true .... I just don't know and I have asked the company for particulars such as input impedance and bandwidth which might yield some added insight. Are there any other antenna engineers on this thread?

Terry
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