I am not sure about new phones, the last one I had was in 2001. Never looked back. My wife makes me take hers when i go fly now... (i havent told her, its fine, because there arent pay phones anymore) My cheap china android tablets i got for the kids have horrible reception and just a whip antenna.(taped to the galvanized steel LCD...DUH...)
After reading that PDF I drew a line of conclusion that the higher the frequency the easier that type of antenna is to use. use, as in being feasable for the PCB and in aplication. The lower frequency is just tooo long of wave length. I think the copper trace antenna is an avenue that needs explored. probably not so much for production, but for those of use who actually want to mount the electronics in the forward closure.... to be honest, all my "science" experiments are behind a Dad of 3 youngins... so it will happen in due time, just may be a long time. I have found if i just work a little here and there as i can, it adds up. The circlular polarized patch antenna is awesome.... if you roll your own tube, you could lamitate it right in... Really cool stuff. I was just not sure of how much the 10mw was suseptable to the resistance of the wire. Not really sure how much resistance difference is in 22 to 26 ga solid core. I had replace the whip a while back and guess i was off a tad on the length. I noticed i have a weaker reception on my rocket than I do others that ive been able to track.... this redo should fix that. It bumped up on my ground test last night 1 or 2 db. just a dongle with a rubber duck. I have a launch opporotunity tommorow, then again in two weeks... :) time for some testing! Clay On Fri, Sep 20, 2013 at 11:22 AM, George Shaiffer <[email protected]> wrote: > Probably speaking from ignorance, but an idea occurred while following > this thread: > The "rubber ducky" antenna disappeared from cell phones when they started > printing fractal based > antennas onto the case/circuit board. A Fractal antenna could possibly > be another solution? Just wondering. > There might be a NAR research project here. > George Shaiffer > > From: [email protected] > To: [email protected]; [email protected] > Date: Fri, 20 Sep 2013 10:02:01 -0600 > Subject: Re: [altusmetrum] Telemetrum Antenna > > > Clay & Carly Dunsworth <[email protected]> writes: > > > Does the Gage of the antenna wire matter? I am guessing does. > > In theory, a larger diameter wire should give slightly broad bandwidth. > In practice in this application, you won't be able to tell the > difference. > > > What is the best Gage To use for the power of the telemetrum? > > All TeleMetrum boards shipped to date have approximately 10 milliwatt > transmitter output power. At that power level, pretty much anything is > just fine. In production, I use 22 AWG solid insulated with PVC. > > Bdale > > > _______________________________________________ altusmetrum mailing list > [email protected] > http://lists.gag.com/mailman/listinfo/altusmetrum > > _______________________________________________ > altusmetrum mailing list > [email protected] > http://lists.gag.com/mailman/listinfo/altusmetrum > >
_______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
