Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Cookie Cantenna with Funnel

Cookie Cantenna with Funnel

This article will describe how to make a cheap, portable, high performance (15-18 db) directional antenna out of commonly available parts that can be purchased in most grocery and hardware stores. Unlike these other designs, the CookieCantenna aims to let you have your cookies and eat them too!
Assembly

Take off the lid and remove all the cookies and packaging. The interior should be relatively clean, but you may want to wash and dry before proceeding.

Use a can-opener to remove the bottom of the can. The lid of the can is totally flat, so does a better job of reflecting radio waves without distorting them. The bottom of the can has small ripples for strength, which seem to add a small amount of distortion. So, for our purposes, we are going to remove the bottom and use it as the opening into the waveguide. If you don’t have one of the fancy electric can-openers that will remove the bottom without leaving sharp edges, you may need to use a file to remove any sharp edges or protrusions into the can’s interior.

You now have a hollow cylinder. Pop the lid on one end of the cylinder and measure 44 mm down the cylinder lengthwise from the spherical plane of the lid and make a mark in the paint with a sharp object. It is important to measure from the face of the lid and not simply from the end of the hollow cylinder, as the two resulting distances are slightly different and could negatively impact antenna performance.

Drill or use some other tool to create a hole for your N connector, centered on the mark you made in the last step. The hole should be just big enough to allow the threading on the N connector to get through. In my case, this hole ended up being about 5/8″ in diameter, but yours may be slightly different. Try to avoid deforming the shape of the can during this process. If the hole has any rough edges, use a file to smooth them down.

Next, get out your N connector and copper wire and plug in your soldering iron. Cut a piece that will be a little long for our purposes, say 40mm worth and solder the wire into the center tap of the N connector. It may be difficult to keep the wire straight and solder at the same time, so you might want to get a friend to hold the wire in place (ideally with needlenose pliers. The wire will get hot!) while you hold the soldering iron in one hand and the solder in the other.

Visit Here for more.







 

More Articles to Read

The Sandwich-o-Matic will make your lunch automatically
The Sandwich-o-Matic will make your lunch automatically
Scalar Network Analyser Jr
Scalar Network Analyser Jr
An Arduino-controlled automated whiskey distillery
An Arduino-controlled automated whiskey distillery
The Rex800 looks like a dinosaur Terminator
The Rex800 looks like a dinosaur Terminator
Home Environment Monitor
Home Environment Monitor
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
Noisy ESP8266
Noisy ESP8266
Noisy ESP8266
Noisy ESP8266
App note: Noise analysis for high-speed op amps
App note: Noise analysis for high-speed op amps
Skill Sunday: Arrays
Skill Sunday: Arrays
App note: Infrared remote control implementation with MSP430FR4xx
App note: Infrared remote control implementation with MSP430FR4xx
Gesture Controlled Smart Home
Gesture Controlled Smart Home
Design for a Wideband, Differential Transimpedance DAC Output
Design for a Wideband, Differential Transimpedance DAC Output
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Bertan/Spellman 225-20R HV power supply teardown
Bertan/Spellman 225-20R HV power supply teardown
Blinking Christmas Lights
Blinking Christmas Lights
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adding an “extra sense” with rangefinders
Adding an “extra sense” with rangefinders
This wireless game controller looks like a rug
This wireless game controller looks like a rug

Top


Shares