Home-Brew Antennae: Difference between revisions
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==Directional Antennae== | ==Directional Antennae== | ||
===Cantenna=== | ===Cantenna=== | ||
The instructions shown the websites listed on [[Links#Antennae]] were used ti build some cantennae as shown in the pictures: | |||
[ | |||
[[Image:P9170496.jpg|thumb]] | [[Image:P9170496.jpg|thumb]] | ||
[[Image:Cantenna.jpg|thumb]] | [[Image:Cantenna.jpg|thumb]] | ||
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===Sectoral Antenna=== | ===Sectoral Antenna=== | ||
====Turn an Omni into a Sector==== | ====Turn an Omni into a Sector==== | ||
The designs shown | The reflector designs shown, found at [http://www.freeantennas.com/ Freeantennas.com] can be applied to a standard omni and will turn the omni into a sectoral antenna. | ||
[[Image:Template.jpg|thumb]] | [[Image:Template.jpg|thumb]] | ||
[[Image:Wet-11.jpg|thumb]] | [[Image:Wet-11.jpg|thumb]] | ||
==Simulation== | ==Simulation== | ||
[http://www.nec2.org/ NEC 2] was used to generate the simulated field pattern for a cantenna with the dimensions used in our first test cantenna. | |||
[http://www.nec2.org/ NEC 2] | |||
[[Image:Simulation.jpg|thumb]] | [[Image:Simulation.jpg|thumb]] |
Revision as of 12:25, 16 November 2005
Omnidirectional Antennae
It is possible to make a homebrew omnidirectional antenna, as shown in the guides listed on Links#Antennae.
Directional Antennae
Cantenna
The instructions shown the websites listed on Links#Antennae were used ti build some cantennae as shown in the pictures:
File:Circular waveguide optimise.xls
Sectoral Antenna
Turn an Omni into a Sector
The reflector designs shown, found at Freeantennas.com can be applied to a standard omni and will turn the omni into a sectoral antenna.
Simulation
NEC 2 was used to generate the simulated field pattern for a cantenna with the dimensions used in our first test cantenna.