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

Implement an antenna for the 802.11b (Wi-Fi) specification

Implement an antenna for the 802.11b (Wi-Fi) specification

This covers the frequencies of 2,400 MHz through 2,440 MHz. Our goals were to achieve a higher gain than the internal card antenna located in a common PCMCIA wireless card, smaller size and greater portability than current external antennas and omni-directionality for use in a mobile enviroment.
Our gain was as high as 8 dB over the best gain of the internal antenna in the Lucent Bronze card. Our overall dimensions were 3×3.75×3.75 centimeters. We fed our antenna using 50 Ohm thin coax and connecters rated for 2.4 GHz, probably availible at your local Radio Shack with the exception of a special pigtail that can be purchased from nearly any wireless networking vendor. The antenna was fabricated from a short section of copper (water) tubing often used in plumbing, copper foil and a piece of copper thin single sided copper board (fiberglass board plated with copper on one side). Fabrication from aluminum may also work well provided a suitable insulater electrically seperates the disk and the cone (like a rubber stopper). Our final impediance was 56 + j 7.5 and resulting SWR was calcuated at 1.4 using a slotted line.

Visit Here for more.

 

More Articles to Read

Emulate a Commodore 64 keyboard with a modern PC and an Arduino
Emulate a Commodore 64 keyboard with a modern PC and an Arduino
USB2005 and USB97C202 Sharing ATA/ATAPI Drive w/ Another Controller
USB2005 and USB97C202 Sharing ATA/ATAPI Drive w/ Another Controller
Robotic Cat Laser
Robotic Cat Laser
LED traffic light
LED traffic light
Estimating Power for ADSP-BF561 Blackfin® Processors
Estimating Power for ADSP-BF561 Blackfin® Processors
Teach Your Arduino to Switch Itself Off!
Teach Your Arduino to Switch Itself Off!
Control a tracked robot with your mind (or joystick)
Control a tracked robot with your mind (or joystick)
A 400W (1kW Peak) 100A electronic load using linear MOSFETs
A 400W (1kW Peak) 100A electronic load using linear MOSFETs
Shirt Pocket Transceiver with the Si5351 and OLED
Shirt Pocket Transceiver with the Si5351 and OLED
All metal C930e webcam
All metal C930e webcam

Top




Shares