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Dipole on a PCB - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues - primarily having to spend time purging garbage posts from the board. At some point I might start the RF Cafe Forums again if the phpBB software gets better at filtering spam.

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Ram
 Post subject: Dipole on a PCB
Posted: Tue Mar 22, 2005 9:46 am 
I am new to the Antenna Design Field. I need to put a dipole antenna on my PCB. Frequency of Operation is 2.4GHz. I see that the length of the Antenna (half wave dipole) can be calculated from the wavelength (0.5* 300/2400 cm).
I am not sure about the balun, transmission line and feed point design. I have questions like which would be a good Transmission line- a coax or a twin lead conductor, what would be the length of the Transmission line, how to design a balun.
I would highly appreciate if someone can throw some light on it or direct me with any resource links, which would help my cause.
Thanks
Ram


 
  
 
Kirt Blattenberger
 Post subject:
Posted: Tue Mar 22, 2005 10:25 am 
 
Site Admin
User avatar

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308
Location: Erie, PA
Greetings Ram:

Many cellphones and other devices that use Bluetooth circuitry have the antennas printed right onto the PCBs. The vast majority of WLAN (802.11b/g/n) PCBs use printed antennas.

Your question is covered extensively in many books (1) and papers (2,3).

(1)
(2) http://www.ansoft.com/news/articles/02.06_MWJ.pdf
(3) http://static.highbeam.com/m/microwavej ... ipoleante/

Hopefully, this will get you started.


- Kirt Blattenberger :smt024


 
   
 
Kirt Blattenberger
 Post subject:
Posted: Tue Mar 22, 2005 11:40 pm 
 
Site Admin
User avatar

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308
Location: Erie, PA
Greetings Ram:

Good news! I just ran across an excellent application note by Freescale Semiconductor that is just what you are seeking.

"Compact Integrated Antennas"
http://www.freescale.com/files/rf_if/do ... AN2731.pdf


- Kirt Blattenberger :smt024


 
   
 
alvin_lee
 Post subject: dipole antenna
Posted: Fri Apr 01, 2005 10:32 am 
 
Lieutenant

Joined: Fri Apr 01, 2005 10:29 am
Posts: 2
hi, I am required to simulate a microstrip dipole antenna on Feko. I have found a reliable design but am having problems with feko. is there anyone out there who is able to help me.

thanks

cheers
Alvin



Posted  11/12/2012
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