It may already have one.

As for no gain, I assume that you mean they provide 0dBi, which is true.

However quick question:  how many mW in 0 dBm, 1dBm and 2dBm?

Now remember that ye olde standard rubber duckie on that AP you got at Fry's (or even from Cisco) has a 2.15dBi antenna on it. This is
about 65% more EIRP than a 0dBi antenna, but, in the great scheme of things, not all that much.


On Aug 12, 2004, at 2:10 PM, mis.scottlu.hq.us wrote:

Thanks a lot,
Cause I want to add an internal antenna for my laptop "IBM X30".

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Jonathan Kramer
Sent: Thursday, August 12, 2004 4:42 PM
To: [EMAIL PROTECTED]
Subject: RE: [SOCALWUG] PCB Antenna

PCB antennas are generally inefficient, and provide for no gain. Here's
an
interesting application note that illustrates what you can expect from a
PCB
antenna for WLAN service:


http://www.etenna.com/literature/application_notes/ EA5800%20App%20Note.p
df



Jonathan Kramer www.CableTV.com



-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf
Of mis.scottlu.hq.us
Sent: Thursday, August 12, 2004 3:24 PM
To: [EMAIL PROTECTED]
Subject: [SOCALWUG] PCB Antenna


I am looking for PCB Antenna design for WLAN. thanks



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