How to amplify wifi signal strength

Amplifying Wi-Fi Signals

We all are privy to what wifi is. Also spelled Wifi or WiFi, is a local area wireless technology that allows an electronic device to exchange data or connect to the internet using 2.4 GHz UHF and 5 GHz SHF radio waves. It is a very important and useful piece of technology that has made our life easier and therefore there is a need to better this technology and hence we have created this wiki page as part of our How Stuff Works System Management Project. This Page will allow simply users like us with limited information to take simple measure to improve Wifi signal strength, and hence solve this daily dilemma of poor wifi.

The Problem
Many devices can use Wi-Fi, e.g., personal computers, video-game consoles, smartphones, digital cameras, tablet computers and digital audio players. These can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (66 feet) indoors and a greater range outdoors. You must have witnessed that sometime in certain areas of your home there is a lack of signal which can be very troublesome. We can solve this issue by either increasing the range or increasing the strength of the signal. We will explore this in the following pages.

How Wifi works
Wifi is not a device or a hardware component, but rather is a technology which allows devices to communicate using SHF radio waves of either 2.4GHz or 5GHz. All modern routers communicates to computers, mobiles etc using wifi. Wifi signals can be blocked by walls and other hard surfaces.

Solutions
The solution is a three part system. First part are common home remedies that will improve Wifi reception.The second part is using inssider to change channel. The third is making a parabolic reflector to direct the signal in a particular direction.

Improving Wifi Reception using home remedies
Proper placement of your Router and moving some furniture around can boost your wifi signals. We will explore this now:

1.) Move furniture like cupboards mainly so that your signal doesn’t have to travel more through cumbersome furniture which will improve the signal in the area.
2.) Minimise mirror, and other smooth metallic surface which will deflect wifi signals.
3.)Place your Router to maximise effectiveness:

  • place near the centre of the house or on top of a furniture or on the floor above which will improve wifi reception overall.
  • all electronic devices like other router or EVEN your microwave operate on some frequency, so place your router away from microwaves or from your neighbours router to avoid interference and improve accessibility.

4.)Repeaters or Bridge

  • what are repeaters or bridges- these items takes an existing signal from a wireless router or access point and rebroadcasts it to create a second network, this way you can extend your networks and range

5.)Change from WEP to WPA/WPA2.
Firstly WEP and WPA/WPA2 are security algorithms that keep hackers from breaking into your network. The only problem is that WEP ("Wired Equivalent Privacy") is a lot less secure than WPA/WPA2 ("Wireless Protected Access").So if you're still running your internet through WEP instead of WPA/WPA2, consider changing so that unwanted forces don't break into your network.
you can do this by accessing your wireless routers settings. we will explore this in the upcoming page

Improving Wifi Reception using parabolic reflector

How does a parabolic reflector amplify the wifi signal strength?

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Before answering the above question think about the difference between a bulb and a torch to understand what is actually happening.
A bulb emits light equally in all directions. A torch is nothing but a bulb with a parabolic reflector, just as a torch concentrates
all the light of the bulb in parallel beams in a single direction, the model that we have made amplifies the wifi signal strength by
concentrating the signal toward the concerned device.

Why a parabolic shape?

A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such
as light, sound, or as in this case, radio waves. Its shape is part of a circular paraboloid, that is, the surface generated by a parabola revolving around
its axis. Due to geometrical properties of a paraboloid, a spherical wave generated by a point source placed in the focus is reflected into a plane wave propagating
as a collimated beam along the axis.

Why the aluminium foil?

Its the aluminium foil which reflects the radio waves and all the waves which would otherwise go past the model would be collected and directed as per the parabola's focus.

Improving Wifi reception using inSSider

inSSIDer is a Wi-Fi network scanner application for Microsoft Windows and Apple OS X developed by MetaGeek, LLC.[2]
It has received awards such as a 2008 Infoworld Bossie Award for "Best of Open Source Software in Networking".
inSSIDer began as a replacement for NetStumbler, a popular Windows Wi-Fi scanner, which had not been actively developed for
several years and reputedly did not work with modern 64-bit operating systems or versions of Windows higher than Windows XP.
The project was inspired by Charles Putney on The Code Project.
We ourselves used this application. Following are some screenshots:

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Features

1. Gathers information from wireless card and software
2. Helps choose the best wireless channel available
3. Wi-Fi network information such as SSID, MAC, vendor, data rate, signal strength, and security
4. Graphs signal strength over time
5. Shows which Wi-Fi network channels overlap
6. GPS support
7. Export to Netstumbler (.ns1) files
8. KML logging

the best channel for wifi are 1 6 11 because they don’t overlap other channels
but you should examine whether there are already many computers using these channels.

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