Posts Tagged ‘pcb’

Microstrip PCB Balun

Thursday, January 24th, 2008

This is posted on www.zero13wireless.net/foro/ from sushisan

This can be a replacement for coax baluns used in Amos antennas.

Microstrip PCB Balun Microstrip PCB Balun
There is also very interesting pdf file on site.

Actually this is part of a dipole printed on fr4 plate but without dipole.

May be can be madded like NHC 21DBI dipole?

And here something similar : www.digdice.com/2007/09/28/sector-antenna-grad2487/

SWR tests of wifi panel antennas

Wednesday, December 19th, 2007

Tere are some interesting result of testing panel antenna for wifi band on Russian site : http://www.lan23.ru/forum/showthread.php?t=1009

Antenna is tested when the pcb print is looking toward  to a reflector and back.

You get lower SWR when the pint is looking to a reflector – pictures shows all :

SWR panel wifi antennaSWR panel wifi antenna

Dlink Ant24-1201 Yagi WIFI Antenna

Friday, October 12th, 2007

Another Yagi whit interesting design, this time from Dlink.

Original link : http://www.zero13wireless.net/foro/showthread.php?t=1150

PDF Specification : http://www.dlink-me.com/ftp/antennas/pdf/ANT24-1201.pdf

antena_d_link_ant24_12db_164.jpg

Gain should be around 12dbi.

And here it is what is inside : usual yagi directors are madded from aluminum /i think/ and pcb dipole used as feeding element.

vista_superior_126.jpg vista_inferior_152.jpgdlinkant241201mg7.jpg
You are wondering were did You saw similar dipole feeding ??? 🙂 I tell You : http://www.digdice.com/2007/09/28/sector-antenna-grad2487/
The feeding of the dipole is very similar.

Dimensions for this antenna :

medidas_193_mas_183_181.jpg