How To Build Your Own Wajanbolic Antenna

How To Build Your Own Wajanbolic Antenna

for 802.11(b or g) Wireless Networks or other 2.4GHz Applications

by WAJANBOLIC SHOP

All You Need Is Here

Got no dough for a commercial WiFi antenna? Building your Wajanbolic Antenna is easy, just follow these steps :

1. Collect The Part You will need
2. Work it & Assembling
3. Done

Collect The Part

You'll Need :

1. USB Wireless Adapter
2. A Wok! Yes, it's a wok for cooking. Prefer Alumunium and Greater than 40 cm
3. A PVC Pipe, 3" Pipe with Doff
4. Alumunium Tape
5. Nuts & Bolts
6. UTP Belden Original Cable 15 m
7. USB Cable
8. Tools : Drill, Cutter, Forceps, Measuring Tape, Handsaw, Screw Driver, etc

Work It & Assembbling

1. Count

First step we need to count the focus point of the wok.

F=D²/16d

F = Focus

D = Diameter

d = depth

Such as wok with 40 cm diameter and depth 10.5 cm, will be like this :

F = 40²/(16x10.5) Focus point = 9,5238 cm

Then, we need to count pipe length which coated with alumunium tape

This is λ formula for 2.4 GHz :

λ = C/Freq

λ = 3000/2437

For wifi freq we must have:

0.60λ<>> 74cm <>

Insert Into λg Formula :

λg = λ/√1-(λ/1.706D)²

λg = λ/√1-(12.31/1.706x9.017)²

λg = 20.52

L min = 0.75λg

L min = 15.4 cm

Rounded 20 cm for the alumunium coated

2. Process Assembling

Antenna

• Allocate center point of wok diameter, drill it punch hole on it for Nuts & Bolts.


• Allocate center point of Doff PVC Pipe and punch hole on it.


• Set nuts bolt on Doff gathered wit the wok, and


• Cut PVC pipe into 29.5cm length


• Allocate for placing USB hole, and make hole on it with cutter. measure 5.1 cm from the tip of pipe


• Allocate 20 cm from the same tip of the pipe for Alumunium coated and make side border pattern into it


• Coat it with alumunium tape, not for the shorter but the longer lenght border


• Beside PVC pipe, PVC Doff will need to coat with alumunium tape inside of it.


• Your work almost done! Assembly it with the doff which is placed on the wok.


• For the antenna you're done.

Cable

• Okey, we'll need USB Extender more than 5 m! How to make it?


• First, cut the USB Cable as short as possible.


• Here is the schema :


• Red USB Cable <==> Orange + Orange/White UTP Cable


• White USB Cable <==> Green/White UTP Cable


• Green USB Cable <==> Green UTP Cable


• Black USB Cable <==> Others Cable on UTP


• Now you can use USB+UTP Cable for more than 5 m


• Connect it to USB Wireless on the antenna

You're Done!!!

You can use this wireless antenna less than 2 KMs relative.