Re: NEC-LIST:Simulations of Q and the Chiu-Harrington Limit

Good day Chip,

I have done some work on small antennas. Most of my publications are listed
below. I assume you mean Altschuler's article appeared in the IEEE Trans.
on A&P. I don't remember it, but I should have the Trans. What was
Rahmat-Samii's presentation about? What is the Chiu-Harrington limit? I
know about a Chu limit published around 1947.

Doug Miron

"The Short Fat Dipole; Development in APL of a MoM Solution", ACES Journal,
vol. 6, no. 2, Winter, 1991.

"Some Simplifications for Numerical Impedance Matching with a Small Antenna
Example", Proceedings of RF Expo West 1995, published by Argus Business,
Atlanta, GA, pp74-80.

"Volume Loading-A New Principle for Small Antennas", ACES Journal, July '99.

----- Original Message -----
From: <Fractenna_at_aol.com>
To: <nec-list_at_gweep.ca>
Sent: Wednesday, November 27, 2002 6:55 AM
Subject: NEC-LIST:Simulations of Q and the Chiu-Harrington Limit

Hello All,

I am doing a literature search on electrically small antennas, as
preparation
for publication. Right now, I am trying to see the best that has been done
in
finding low Q antennas at small values of KR.

I am aware of Altshuler's Mar 2002 paper in Transactions, as well as other
sources including the APS 2002 presentation of Gionvatorrio and
Rahmat-Samii.
As we have new data that will prove of interest, it is important that we do
our best to report all that has been known on low Q antennas at small values
of KR, so that issues may be definitely addressed and answered. In other
words, what are the best known designs that approach the Chiu-Harrington
limit?

If you are aware of simulations that beat Ed Altshuler's 5 wire or a (self
similar) conic section, I would appreciate a citation or information before
publication (which will, of course be properly attributed).

Many thanks!

Chip N1IR

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