Home-Brew Antennae: Difference between revisions

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==Directional Antennae==
==Directional Antennae==
===Cantenna===
===Cantenna===
Instructions on how to build your own can be found on many websites, here are some that we used:
The instructions shown the websites listed on [[Links#Antennae]] were used ti build some cantennae as shown in the pictures:
[http://www.extremetech.com/article2/0,1697,1642883,00.asp Extremetech guide on building a cantenna]
[http://www.turnpoint.net/wireless/cantennahowto.html Cantenna HowTo]
 
And pictures of the results:
[[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 for a reflector can be applied to a standard omni and will turn the omni into a sectoral antenna.  
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.  


Taken from: [http://www.freeantennas.com/ Freeantennas.com]
[[Image:Template.jpg|thumb]]
[[Image:Template.jpg|thumb]]
[[Image:Wet-11.jpg|thumb]]
[[Image:Wet-11.jpg|thumb]]


==Simulation==
==Simulation==
[http://www.si-list.org/swindex2.html NEC tools]
[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:

P9170496.jpg
Cantenna.jpg
Cantenna2.jpg

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.

Template.jpg
Wet-11.jpg

Simulation

NEC 2 was used to generate the simulated field pattern for a cantenna with the dimensions used in our first test cantenna.

Simulation.jpg