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Community Wireless: WiFi Antenna


Extending the range of WiFi devices with antenna to create wireless broadband links can be done several ways. The transmit power of the radio can be increased or an antenna can be used increase the broadcast power over a smaller area. Sometimes we forget that the antenna also increase our listening ability. Sometimes it proves useful to use a larger antenna and reduce the transmit power. This approach enables us to stay within approved guidelines while increasing our receive sensitivity. With the rapid proliferation of public spectrum broadband radios it is becoming increasingly important to limit signal contamination of surrounding areas. Narrow band antenna are more difficult to align but also have the advantage of improved signal security. There is a lot of information about using antenna on access points. I will try to reference some of the high points and make the process of extending your range a little easier.


See commercial solutions at the bottom of this page.

Analysis, Design and Installation

What is the best WiFi antenna for me?
Antenna Installation
Wireless Network Link Analysis
Parabolic Reflector Analysis

Free (almost) WIFI Booster:

Easy to try one before buying a commercial antenna
Scissors and Glue. 96 Seconds.
Parabolic Template

Free* WIFI Booster


WiFi Antenna Hack:

Double your range and signal strength for about 5 cents!
Easy to do with GREAT results! 2:07 minutes.

WIFI Antenna Hack!


15$ 10dBi wifi antenna:

Compact, robust and weatherproof.
Fairly easy to build yet having excelent parameters. 107 seconds.
Parabolic Template


10$ 16dBi WiFi Directional High Gain Antenna:

Compact, robust and weatherproof.
Fairly easy to build yet having excelent parameters. 2:16 minutes.
Parabolic Template


5$ Wifi Parabolic Dish Antenna:

This is a simple 14dbi WIFI antenna you can make for only 5$.
Made from parts you can find very easy. 12:55 minutes.
Parabolic Reflector Analysis

5$ Wifi Dish


BiQuad 802.11b Antenna
BiQuad 802.11b Antenna:
How to use a small satellite dish to create a high gain antenna. " That's all there is to it, folks -- you now have a dish with 27-31 dBi of gain and negligable sidelobe radiation (<40dB). The beamwidth is about 4 degrees."

PigTails: Connect your Antenna:
" Most antennas come with a connector. For standardization, most people select an "N" connector so that the antenna is usable or loanable to many people who can also make use of an "N" connector. Because an "N" connector is large, an adapter is needed to connect the antenna to the wireless card." Based in Seattle, WA, USA

Microwave Connectors and Adaptors:
"This page is referenced because it shows photos of many of the connectors."


Commerical Solutions

Cantenna
Cantenna:
"An inexpensive commercial version of the original food snack can antenna" Based in Solana Beach, CA 92075, USA

Versa WiFi USB Adapter
Versa WiFi USB Adapter has an external connector that lets you connect another better antenna -- and more than triple your wireless range. Installer for Windows, Mac, and Linux. 802.11b/g. Works at speeds up to 54 Mbps. WPA and WEP encryption compatible.

Super USB WiFi Antenna
Super USB WiFi Antenna Chipset Gain: Up to 20dBm, Antenna Gain: 4.5dBi. Plugs into USB. Installer for Windows, Mac, and Linux. 802.11b/g. Works at speeds up to 54 Mbps. WPA and WEP encryption compatible.

Point To Point Parabolic WiFi Antenna
Point To Point Parabolic WiFi Antenna Antenna Gain: 15dBi. For point to point applications over distances up to three miles line of sight. Can be used with Versa WiFi USB Adapter. Can be used with various routers, page also lists ultra-low-loss coaxial cable and cable adapters. RPSMA Male x N Female, RPSMA Male x N Male, RPTNC Male x Female.

Hi-Gain 7dBi WiFi Antenna
Hi-Gain 7dBi WiFi Antenna 2.4 GHz omni-directional antenna is lightweight and well made. Choose between RPSMA male or RPTNC male connector type.

Folkstone Haron Photo


Updated: February 15, 2008 1:34 PM - V0N 1V1
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