Ken & Group, The data I have for this antenna are these:
- The board is a Wireless LAN - The antenna must be omnidirectional - The output power is 100mW Thanks in advance for the answers Best Regards Muriel Ken Javor wrote: > > I checked out the referenced web site. Not a whole lot of information, but I > gleaned the following. Since the application is WAN/LAN, the antenna must > be a low directivity broadcast type, probably a quarter wave stub or similar > device. At 2.4 GHz, this amounts to 31 mm, or 1 1/4 ". A quarter wave stub > looks approximately like a 35 Ohm load. Not too bad a match to 50 Ohms. I > suppose you could shorten it up a bit to increase the load, but it becomes > capacitive when you do that. Still not sure about the 30 dB pad. Is this > when you are connecting together two PCMCIA cards without the intervening > loss associated with the rf link? In any case, I don't know of any kind of > coax that would provide 30 dB of attenuation with a reasonable length. For > example, you would need almost 100' (30 m) of RG-58 to get 30 dB > attenuation. Better off to use a 30 dB pad. As long as transmit power is > low, this is a minor addition. > > ---------- > >From: Muriel Bittencourt de Liz <[email protected]> > >To: Ken Javor <[email protected]> > >Cc: Lista de EMC da IEEE <[email protected]> > >Subject: Re: antenna and cable for 2.4GHz > >Date: Mon, Dec 6, 1999, 4:59 AM > > > > > in detail the board details: > > > > http://www.mcc.com/projects -- 8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-) Muriel Bittencourt de Liz, M.Sc. - EMC Engineer GRUCAD - Group for Conception & Analysis of Electromagnetic Devices Santa Catarina Federal University - UFSC PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL Phone: +55.48.331.9649 - Fax: +55.48.234.3790 e-mail: [email protected] ICQ#: 9089332 --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
