home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
World of Ham Radio 1997
/
WOHR97_AmSoft_(1997-02-01).iso
/
antenna
/
ant_25
/
prog
/
products.doc
< prev
next >
Wrap
Text File
|
1997-02-01
|
6KB
|
111 lines
EZNEC
EZNEC is a powerful but very easy-to-use program for modeling and analyzing
nearly any kind of antenna in its actual operating environment. EZNEC plots
azimuth and elevation patterns; tells you gain, feedpoint impedance, SWR,
and current distribution; finds and reports beamwidth, 3-dB pattern points,
f/b ratio, takeoff angle, sidelobe characteristics; and more. All
information, including patterns, can be displayed on screen or printed on
an ordinary dot-matrix or laser printer. And it's easy to use with EZNEC's
exclusive menu structure, spreadsheet-like entry, and many shortcut
features. You describe the antenna (and other nearby structures if desired)
as a group of straight conductors, choosing the orientation, length, and
diameter. Add sources at the feedpoints and, if desired, transmission
lines, a realistic ground, and loads to simulate loading coils, traps, or
similar components. Using this description method, you can quickly analyze
Yagis, quads, phased arrays, towers, loops -- nearly any type of antenna or
parasitic structure. Antenna descriptions and pattern plots are easily
saved and recalled for future analysis. Multiple patterns can be
superimposed on a single graph for comparison. See the pattern and antenna
currents on the same color 3-D display as the antenna. Rotate the display
and zoom in for details. Want to make a change? EZNEC makes it simple.
EZNEC is specifically designed to be friendly and easy to use while taking
full advantage of the powerful and versatile NEC-2 code. EZNEC is
completely menu-driven; all entries and changes are done directly and
quickly. Wire, source, load, transmission line, and ground entries are done
in a spreadsheet-like format. Many shortcuts are built in. For example,
wires can be rotated with a simple command to design vee and delta loop
antennas without having to polish your trigonometry skills. Antenna height
and wire length likewise are easily changed. EZNEC lets you directly enter
series or parallel RLC values for loads. Want to analyze phased arrays?
EZNEC provides transmission line and true current source models. With 500
segment capability, EZNEC can model very complex and long antennas. EZNEC
models wire loss and gives loss data for traps or loading coils. The
detailed, fully indexed manual, over 130 pages long, has antenna modeling
tips as well as full instructions on how to get the most from EZNEC. And
there's no tricky installation procedure or copy-protection hassle with
EZNEC.
EZNEC and NEC-2
Although EZNEC incorporates NEC-2 as its calculating engine, it isn't a
"pre-" or "post-processor" for NEC, but rather a compiled, stand-alone
program. The included NEC code isn't user-accessible. Instead of the NEC-2
input and output files and structures, EZNEC uses its own easy-to-use
system which has been proven by a large number of ELNEC and EZNEC users.
EZNEC incorporates SOMNEC for a complete Norton-Sommerfeld ground solution.
This permits accurate analysis of antennas which include very low
horizontal wires. Some NEC-2 capabilities aren't presently used in EZNEC,
including near field analysis, patches, helices, and ground wave analysis.
Hardware Requirements
You'll need an IBM PC-compatible with an 80386 or higher processor with
coprocessor, at least 2 MB of available extended RAM, and EGA, VGA, or
SVGA graphics adapter. Plots print on HP LaserJet, color or monochrome HP
DeskJet, or Epson-compatible dot-matrix printers. EZNEC is a DOS
application which can be run under Windows, Windows 95, or Windows NT if
desired.
Need more information?
Call me at (503) 646-2885, fax (503) 671-9046, or email to
w7el@teleport.com. I'll be glad to answer your questions.
Ordering Information
EZNEC is only $89.00, postpaid to USA/Canada. Enclose check or money order,
or order with your VISA or MasterCard (be sure to include the card number
and expiration date). Please make checks payable to Roy Lewallen. (This is
the price as of 17 April 1996. Price is subject to change without notice.)
Outside USA/Canada, please add $3.00 for air mail postage. Payment can be
in U.S. currency; check or money order in U.S. funds payable through a U.S.
bank; postal money order in U.S. funds redeemable at a U.S. Post Office;
VISA; or MasterCard.
Bank card orders may be phoned to (503) 646-2885 or faxed to
(503) 671-9046. Order from:
Roy Lewallen, W7EL
P.O. Box 6658
Beaverton OR 97007
U.S.A.
Other Products
ELNEC is an economical and easy-to-use MININEC-based analysis program with
nearly all the features of EZNEC. It is not recommended for analyzing
quads, long Yagis, or antennas with more than 6 - 8 total wavelengths of
wire. It cannot accurately model antennas with horizontal wires lower than
about 0.2 wavelength. For other antenna types, accuracy is very good, and
its easy-to-use interface is highly acclaimed. ELNEC is available for use
with any PC-compatible computer; specify coprocessor or non-coprocessor
type. ELNEC files are compatible with EZNEC to provide an easy upgrade
path. ELNEC customers receive a $20.00 discount when upgrading to EZNEC.
Price $49.00 postpaid to U.S. and Canada; add $3.00 for air mail postage
elsewhere. (These are prices as of 17 April 1996. Prices are subject to
change without notice.)
EZNEC-M is a high-segment version of EZNEC for the professional. It can
analyze antennas with more than 2800 segments and more than 1000 wires. It
can read, in a limited fashion, NEC input files for direct analysis of your
existing NEC antenna models. Hardware requirements are the same as for
EZNEC, and EZNEC-M files are completely compatible with EZNEC. EZNEC-M is
$325.00. EZNEC customers can upgrade to EZNEC-M for $275.00; if EZNEC was
purchased within 30 days of the EZNEC-M purchase, the upgrade is $236.00.
Add $3.00 for delivery outside the U.S./Canada. (These are prices as of
17 April 1996. Prices are subject to change without notice.)