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802.11b Wireless LAN Web Page




DIPOLES FEEDS COLINEARS REVERSE SMA CONNECTORS VSWR METER
FIELD STRENGTH METER LOOP YAGI PANEL ANTENNA DIVIDER COMBINERS
MULTIPATH MAKING PCBS ANTENNA PRIMER PARTS FOR SALE
1/4 WAVE TEST HELICAL AMPLIFIERS GALAXY
UNWIRED OTHER ANTENNAS PICTURES HOWTO Solder



VERY CHEAP CO-LINEAR ANTENNA

Don't have an antenna for your 802.11b wireless LAN equipment yet. Can't afford to spend $80 on a 8dbi commmercial antenna. Well build this 6dbi Co-linear antenna for the cost of a piece of wire and a connector !

802.11 REVERSE SMA CONNECTORS

If you have bought some SMA connectors lately hoping to plug them into your Wireless LAN card you may have noticed that the 802.11 connectors are not true SMA connectors. Instead what some clever clown has done is reverse the pin configurations so that what was the Male connector now has the socket and the female has the pin. These person must have surely been a poofter or a drag queen to come up with such a pain in the arse !!! This artical is how to convert true SMA connectors into transvestite SMA's.

HOME MADE 2GHz VSWR METER

Many Wireless LAN experimenters want to build their own antennas as some of the commercial units are quite expensive. The commercial antennas are often very simple in design, they just have a nice pretty casing. Building antennas is very easy, but you really need some way of testing your home made antenna and one of the best ways of doing this is measuring its "return loss". Return loss gives you an idea how efficient your antenna is. It assumes that what ever power is not transmitted into the air is sent back down the coax to the transmitter. The more reflected power the worse the antenna. To measure the reflected power we use a thing called a "reflectometer" or a VSWR meter as it is commonly known. (SWR Meter to CBer's). This is an artical on how to build a VSWR meter for 2GHz.

HOW TO MAKE A PANEL ANTENNA

I have noticed many panel antennas for sale on the net and people are paying good money for them too. I have worked with these sorts of antennas commercially and they are very simple in their design. There are many variations on the theme, but the basics of panel antennas is that they are all just "Phased Arrays" of Dipole antennas. A very good example of a phased array can be seen as UHF TV antennas. This artical is how to make your very own panel antenna with just a few pieces of plastic, metal and circuit board.

A QUICK PRIMER ON MAKING PRINTED CIRCUIT BOARDS

Rather than make you search around the net for information on how to etch printed circuit boards. I have included a short primer on this web page. Circuit boards are ideal for making antennas especially at low microwave frequencies. I know of so many designs that it will take me quite a while to create a page for each one.

THE IDIOT TOLLERANT "LOOP YAGI" ANTENNA

This is an antenna that is relatively easy to build and most importantly is wide bandwidth which helps make it idiot proof. Dipole yagis have the nasty characteristic at high frequencies of narrow bandwidth. This makes them difficult to build. Ham radio operators have been using loop yagis on 1.2GHz for many years and making them for 2.4GHz is just as easy.

FIELD STRENGTH METER

A useful project that you can build in minutes with parts available from your local electronics shop. You can skimp a few dollars and use cheap parts in this project or go all the way using high quality meters and die cast boxes. With a little bit of added circuitry this meter can be made very sensitive and with some fancy features you'll be the envy of most ham radio operators.

1/4 WAVE TEST ANTENNA

This antenna is extreemly easy to build. It will serve well as a basic indoor omni-directional antenna, but is designed to be a test antenna. The antenna is pictured on the right hand side and is made from a piece of semi rigid coax. The dimensions are shown. The ground plane is a piece of copper or brass sheet metal, but may be replaced by radial wires instead. The plot is the RELECTION LOSS, or the VSWR.


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