We achieve a total radiated output power of +3dBm with the antenna. This data is from the indpendent RF lab that filed the FCC certification report.
-Joe On 7/20/06, Terence Joseph <[EMAIL PROTECTED]> wrote:
Hi Joe, The radiation patterns given in the data sheet appear to be taken from http://www.chipcon.com/files/CC2420DBK_User_Manual_1_3.pdf. However, in this document they claim a gain of -5dBi for the antenna. Can you explain the discrepancy please? Has it something to do with a difference in impedance matching? Best Regards, Terence >From: "Joe Polastre" <[EMAIL PROTECTED]> >To: "Matt Thompson" <[EMAIL PROTECTED]> >CC: tinyos-help@Millennium.Berkeley.EDU >Subject: Re: [Tinyos-help] Antenna gain on tmote >Date: Tue, 18 Jul 2006 11:03:04 -0700 > >Tmote Sky's antenna has about a 1-3dBi gain. Impedance matching is >tough, and it took a few tries for us to get the right match. > >-Joe > >On 7/18/06, Matt Thompson <[EMAIL PROTECTED]> wrote: >>Hi, >> >>Does anyone know the dBi gain of the PCB antenna on the tmote sky >>modules?? We have layed out a board with fractus 1dBi gain antennas, >>and we're not getting close to the range of the tmote antennas. Trying >>to figure out if this is due to lack of gain, or other >>design/manufacturing issues (unmatched impedance). >> >>Cheers, >>Matt >>_______________________________________________ >>Tinyos-help mailing list >>Tinyos-help@Millennium.Berkeley.EDU >>https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> >_______________________________________________ >Tinyos-help mailing list >Tinyos-help@Millennium.Berkeley.EDU >https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _________________________________________________________________ Customise your home page with RSS feeds at MSN Ireland! http://ie.msn.com/
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