Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes Wireless System Designer RF Stencils for Visio Shapes for Word Search RF Cafe Sitemap Advertising Facebook RF Cafe Forums Thank you for visiting RF Cafe!

Flat Panel WIFI - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


distantcoder
 Post subject: Flat Panel WIFI
Posted: Sun Dec 11, 2005 12:52 am 
 
Lieutenant

Joined: Sun Dec 11, 2005 12:39 am
Posts: 1
I was looking for a simple PCB flat panel design that I could make at home does anyone know of any blueprints or exacting measurements or layouts for a 2.4 ghz wifi?

I would really appreciate any links or pointers on making my own

Thanks, I have done some searching but seeing as I am new to this I am having a hard time.

I have build my own biquads and cantennas but I really want to try a high gain flat panel :)

Thank you

distantcoder


 
   
 
wsemajb
 Post subject:
Posted: Thu Jan 26, 2006 6:24 pm 
 
Captain

Joined: Wed Nov 02, 2005 1:50 pm
Posts: 11
distancoder,
I did search this topic but missed yours. I've just asked the same question.
I'm astonished that this info isn't plastered all over the web. I can't find anything either. Have you had any luck yet?


 
   
 
sag
 Post subject:
Posted: Fri Apr 07, 2006 9:52 am 
 
Captain

Joined: Wed Apr 05, 2006 3:34 pm
Posts: 6
what gain woul'd you like to get from you antenna?


 
   
 
fred47
 Post subject: 2.4 GHz flat panel antenna
Posted: Fri Apr 07, 2006 8:39 pm 
 
General
User avatar

Joined: Wed Feb 22, 2006 3:51 pm
Posts: 104
Hi!

One of the reasons you don't find such designs plastered all over the internet is that the common PCB material (G-10 or equivalent) is quite lossy at 2.4 GHz, and the good stuff (like Rogers makes) is both a bit hard for a hobbyist to get his hands on, and a bit spendy.

There are designs for colinear antennas on the web.

Good Luck!
Fred


 
   
 
nubbage
 Post subject: Flat Panel WiFi
Posted: Thu Apr 13, 2006 7:13 am 
 
General
User avatar

Joined: Fri Feb 17, 2006 12:07 pm
Posts: 218
Location: London UK
Two gold mines for patch antennas for 2.4GHz are IEEE Microwave Theory and Techniques Antennas & Propagation, and the IEE Antennas and Propagation. A good technical library will have copies.

For antenna designs fairly near 2.4GHz you can always scale the dimensions.

You can also forget about the dielectric material and air-mount strips of copper sheet on plastic pillars, and the bandwidth performance actually improves with air compared to dielectric support.

Another thought to avoid expensive low-loss substrates if you are cooking one at home, polystyrene sheet is readily available, as it is used to create some packaging. Ferero Rochet chocolate spheres come packaged in quite a good material. Google for self-adhesive copper foil for the elements, and a good tech library for the publications mentioned above.


 
   
 
bill sacks
 Post subject:
Posted: Sun May 14, 2006 4:25 am 
 
Lieutenant

Joined: Sun May 14, 2006 4:20 am
Posts: 1
A quick test of a material for use as a 2.4 GHz subsrate is to just put in a microwave oven-- if the styrofoam melts or gets warm, it will be a lossy sustrate material.
bill


 
   
 
archer
 Post subject:
Posted: Thu Oct 19, 2006 1:00 pm 
 
Lieutenant
User avatar

Joined: Wed Aug 09, 2006 10:49 am
Posts: 4
Location: Northern Illinois
Bill,
The first person I have heard this from was a low observable electromag engineer. You are only the second.

_________________
Tony


 
   
 
archer
 Post subject:
Posted: Thu Oct 19, 2006 5:06 pm 
 
Lieutenant
User avatar

Joined: Wed Aug 09, 2006 10:49 am
Posts: 4
Location: Northern Illinois
I should also add that, when I advise people of this, they look at me funny.

_________________
Tony


 
   
 
nubbage
 Post subject:
Posted: Tue Oct 31, 2006 8:05 am 
 
General
User avatar

Joined: Fri Feb 17, 2006 12:07 pm
Posts: 218
Location: London UK
I found a very good design in Microwave Journal Jan 2000

Wen-Shan Chen "A Novel Broadband Design of a Printed Rectangular Slot Antenna for Wireless Applications"






Posted  11/12/2012

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer

RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

height-line