Development of the Parabolic Antenna Reflector to boost WiFi Overall performance

A wifi antenna reflector? There are actually some superior reasons to test and raise the reception of your respective wifi technique, or to spice up the signal from a wi-fi router within a particular route.

This post presents constructional aspects for an antenna reflector that we crafted, employing tips and steerage from elsewhere on the web. It unfortunately did not obtain sufficient of the raise to attain the objective of long-distance (two hundred yards) reception, nonetheless it did increase reception, and would be wonderful for less-ambitious objectives.

Wifi Antennas – why are they handy?

With wifi, you typically have a couple of small antennas built into your wireless router, and an antenna on your Pc designed to the laptop computer, or in the USB dongle. Commonly this is all you need, but occasionally you require anything a bit better.

As an example, at home, if your review is a few length through the router, you could have a very poor signal, or away from household, inside a hotel, you could potentially discover related difficulties.

To unravel it, you are able to improve the antenna with your Pc, or if at your home, you could also strengthen the antenna in your router. The concept will be to make an antenna directional, making sure that it can be more powerful inside a preferred direction, and weaker in instructions that do not make any difference. Using a laptop computer Computer, you antenna is normally designed to the panel keeping the display screen, and there is no solution to strengthen it. Which means you will need to purchase a USB wifi dongle using an exterior antenna connection. By positioning the dongle (with a USB cable) you may increase reception, and by setting up a larger antenna, you might strengthen reception. In possibly circumstance this may be more than enough to resolve your difficulty, devoid of stressing about directional elements.

However, when you’ve an external antenna, both to the Computer or even the router, you could give it directional properties using a suitable reflector, which we did as explained beneath. A different technique should be to make your own directional antenna from scratch, a thing referred to as a ‘cantenna’. Essentially that is a metallic can, performing for a manual towards the radio waves, with a rod inside of since the antenna. On the internet, there is certainly a lot dialogue on the ideal dimension for a cantenna, with quite a few devotees of working with a Pringles foil-lined canister.

Our Wifi Antenna Task

The track record to this venture was remaining in a hotel with no wifi, however realizing that about two hundred yards away there was a restaurant with wifi for which I could get the entry code (by acquiring a coffee there!).

Therefore the obstacle was to improve my laptop’s reception, given an especially weak signal from your cafe.

In order generally, I did a particular sum of research on the internet, and discussions with technology-minded mates, Jim and Invoice. My initial ideas have been to go for a cantenna, nonetheless it appeared this was most effective suited the place the sign was potent, along with the cantenna was necessary to exclude close by interference, or else the cantenna was utilised at both equally ends (router and Laptop) to provide a form of pipeline with the radio waves.

Having said that, my obstacle was a really weak signal, that needed amplification, so I went that has a unique structure, that of getting a reflector to concentrate the waves on to a typical antenna. Where by only small enhancements in signal are desired, it seems within the world-wide-web that even a flat metallic reflector guiding the antenna is plenty of. Nevertheless for something a lot more challenging, a curved parabolic reflector is needed. The clincher was that my tech get in touch with Invoice (a ham radio enthusiast in Ohio) concurred with going for just a parabolic style and design for what I planned to do, as an alternative to the cantenna.

The Antenna Style

Different world-wide-web websites had design and style suggestions, which was all helpful. During the finish I made a decision to buy a USB wifi dongle, with antenna connection, along with a massive exterior antenna, termed a ‘rubber duck’ for getting optimum get within the sign before incorporating the reflector. The reflector might be aluminium foil glued to some curved cardboard structure, which fitted onto the antenna.

To construct the framework I employed two different types of card. To the curved reflector, I preferred card that was difficult, but may be bent right into a curve without folding or cracking. I purchased a sheet of card used in photo framing, about one.5 mm thick (1/16″). To the three crescent shaped supports, I desired card which was rigid and could not be easily bent. For this I applied corrugated cardboard from the packing box, about 3mm thick (1/8″).