Skip to main content
Warning: You are using the test version of PyPI. This is a pre-production deployment of Warehouse. Changes made here affect the production instance of TestPyPI (
Help us improve Python packaging - Donate today!

Python Antenna Simulation Module (nec2++) C-style interface

Project Description

This module allows you to do antenna simulations in Python using the nec2++ antenna simulation package. This is a wrapper using SWIG of the C interface, so the syntax is quite simple. Have a look at the file necpp_src/example/, for an example of how this library can be used.

Tim Molteno.


  • Version 1.7.0 includes support for getting elements of radiation patterns. At the moment this is just through the function nec_get_gain().


As of version swig is no longer required for installation. Simply use PIP as follows:

pip install necpp


The functions available are documented in the C-style API of nec2++. This is [available here](


The following code calculates the impedance of a simple vertical monopole antenna over a perfect ground.

import necpp

def handle_nec(result):
if (result != 0):
print necpp.nec_error_message()

def impedance(frequency, z0, height):

nec = necpp.nec_create() handle_nec(necpp.nec_wire(nec, 1, 17, 0, 0, z0, 0, 0, z0+height, 0.1, 1, 1)) handle_nec(necpp.nec_geometry_complete(nec, 1, 0)) handle_nec(necpp.nec_gn_card(nec, 1, 0, 0, 0, 0, 0, 0, 0)) handle_nec(necpp.nec_fr_card(nec, 0, 1, frequency, 0)) handle_nec(necpp.nec_ex_card(nec, 0, 0, 1, 0, 1.0, 0, 0, 0, 0, 0)) handle_nec(necpp.nec_rp_card(nec, 0, 90, 1, 0,5,0,0, 0, 90, 1, 0, 0, 0)) result_index = 0

z = complex(necpp.nec_impedance_real(nec,result_index),

necpp.nec_delete(nec) return z

if (__name__ == ‘main’):
z = impedance(frequency = 34.5, z0 = 0.5, height = 4.0) print “Impedance t(%6.1f,%+6.1fI) Ohms” % (z.real, z.imag)

More Information

Have a look at [] for more information on using nec2++.

Release History

This version
History Node

History Node

History Node

History Node

History Node

History Node

History Node

History Node


History Node


Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Hash SHA256 Hash Help Version File Type Upload Date
(186.8 kB) Copy SHA256 Hash SHA256
Source May 10, 2015

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting