RE: quadrifilar helices (fwd)

---------- Forwarded message ----------
Date: Fri, 19 Jul 1996 09:14:05 +0100
From: John Cooksley <J.Cooksley_at_ee.surrey.ac.uk>
To: 'hansen wang' <hansenw_at_ee.ubc.ca>
Subject: RE: quadrifilar helices (fwd)

Hi Gerry,

There is a good papaer funnily enough by Kilgus describing the
characteristics of multiple turn QFH antennas in conical backfire mode.

reference is:

Kilgus, C.C 'Shaped-Conical Radiation Pattern Performance of the
Backfire Quadrifilar Helix'. IEEE Trans. Antennas and Propagation May
1975, pp 392-397

Hope this helps.
John.

John R Cooksley. |Email:J.Cooksley_at_ee.surrey.ac.uk
SSTL |www.ee.surrey.ac.uk/research.cser/uosat
CSER Building |tel: +44 1483 259278 (x2308)
University of Surrey |fax: +44 1483 259503
Guildford |
SURREY |The best way to accelerate Windows
GU2 5XH |is to throw it through one.

>----------
>From: hansen wang[SMTP:hansenw_at_ee.ubc.ca]
>Sent: 18 July 1996 17:33
>To: nec_at_ee.ubc.ca
>Subject: quadrifilar helices (fwd)
>
>
>
>---------- Forwarded message ----------
>Date: Thu, 18 Jul 96 11:35:16 MET
>From: Gerry van Dooren (XEA) tel. 4664. <GVDOOREN_at_estec.esa.nl>
>To: neclist <nec-list_at_ee.ubc.ca>
>Subject: quadrifilar helices
>
>Is there anybody out there that has some experience and/or info on
>(multi-turn) quadrifilar helix antennas? I have some references to work
>of
>Kilgus in the early seventies, but this mainly considers <1 turn
>helices. I
>would be interested in the impedance properties ass function of
>geometrical
>parameters like axial length, diameter and pitch angle.
>
>Any info is appreciated. Please send me e-mail and I will summarize on
>the NEC
>list.
>
>Regards, Gerry.
>
>----------------------------------------------------------------------
>Gerry van Dooren, XEA (GVDOOREN_at_ESTEC.ESA.NL)
>European Space Agency/ESTEC, PO Box 299, 2200AG Noordwijk, Netherlands
>tel.: +31-71-565-4664, fax: +31-71-565-4999
>
>
Received on Fri Jul 19 1996 - 15:22:00 EDT