NEC-LIST: The Wheeler Cap

I notice that the Wheeler cap is suddenly back in the news. Before we
go and reinvent all the wheels there is quite a literature on it from
Wheeler's original paper of 1959 onwards with quite a burst of
activity in the '70s and the occasional one since then. I've listed
some that may be of interest below.

1) H A Wheeler "The radiansphere around a small antenna", Proc IRE,
Aug 1959, pp 1325-1331.

2) E H Newman et al "Two Methods for the Measurement of Antenna
Efficiency", IEEE Trans Ant and Propag. AP23, July 1975, pp457-461

3) G S Smith "Efficiency of Electrically Small Antennas combined with
Matching Networks", IEEE Trans Ant and Propag. AP25, May 1977,
pp369-373.

4) G S Smith "The Analysis of the Wheeler Method for Measuring the
Radiation Efficiency of Antennas", IEEE Trans Ant and Propag. July
1977, pp.552-556.

5) D M Pozar and B Kaufman "Comparison of Three Methods for the
Measurement of Printed Antenna Efficiency", IEEE Trans Ant and
Propag. AP36, Jan 1988, PP.136-139.

6) I Ida et al "Surface-patch modelling of a Wheeler cap for radiation
efficiency simulation of a small loop antenna with NEC2", Electronics
Letters, 30, 4, 17 Feb. 1994, pp.278-279.

7) Van der Riet KP and B A Austin "Limitations of the Wheeler Method
for measuring antenna radiation efficiency due to cavity resonant
modes", Trans South African Inst. of Elec Engrs., 78,2, 1987,
pp.76-78.

Regards,

Brian.
----------------------
Dr B.A.Austin
Department of Electrical Engineering & Electronics
University of Liverpool
Brownlow Hill
Liverpool L69 3GJ
United Kingdom
Tel: (0151) 794 4520
Fax: (0151) 794 4540
email: ee104_at_liv.ac.uk
Received on Thu Apr 22 1999 - 17:42:19 EDT