<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>There are some very good applications notes available, especially the old HP ones<span class="gmail-">. They are a lil more advanced though and expect a decent level of maths...<br></span></div><div><br></div><div>S-Parameters<br></div><div><a href="http://hpmemoryproject.org/an/pdf/an_95.pdf">http://hpmemoryproject.org/an/pdf/an_95.pdf</a></div><div><a href="http://hpmemoryproject.org/an/pdf/an_154.pdf">http://hpmemoryproject.org/an/pdf/an_154.pdf</a></div><div>And the updated Agilent versions of them:</div><div><a href="http://www.sss-mag.com/pdf/hpan95-1.pdf">http://www.sss-mag.com/pdf/hpan95-1.pdf</a></div><div><a href="http://www.sss-mag.com/pdf/AN154.pdf">http://www.sss-mag.com/pdf/AN154.pdf</a></div><div><br></div><div>Spectrum Analyzers</div><div><a href="http://literature.cdn.keysight.com/litweb/pdf/5952-0292.pdf">http://literature.cdn.keysight.com/litweb/pdf/5952-0292.pdf</a></div><div><a href="http://www.ab4oj.com/test/docs/sa_fundamentals.pdf">http://www.ab4oj.com/test/docs/sa_fundamentals.pdf</a><br></div><div><br></div><div>Network Analyzers</div><div><a href="http://download.ni.com/evaluation/rf/Introduction_to_Network_Analyzer_Measurements.pdf">http://download.ni.com/evaluation/rf/Introduction_to_Network_Analyzer_Measurements.pdf</a></div><div><a href="http://literature.cdn.keysight.com/litweb/pdf/5965-7917E.pdf">http://literature.cdn.keysight.com/litweb/pdf/5965-7917E.pdf</a><br></div><div><br></div><div>I also really like this book as an introduction to RF measurement devices and techniques:</div><div><table rules="cols" width="100%" border="0"><tbody><tr valign="top"><td><span><font color="gray"></font></span></td><td colspan="2"><b><a href="http://library1.ga/_ads/929444FF027EC810E1EBCED57D754447">Spectrum and Network Measurements</a></b></td></tr></tbody></table><br></div></div></div></div></div></div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 4, 2018 at 11:22 AM Morgan Allen <<a href="mailto:morganrallen@gmail.com">morganrallen@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div>This might be a good additional resource.</div><div>Measuring Impedance without dedicated equipment. <a href="http://www.learnabout-electronics.org/ac_theory/impedance73.php" target="_blank">http://www.learnabout-electronics.org/ac_theory/impedance73.php</a></div><div><br></div><div>Going to attempt to make it out tonight but reaaally bogged down with work this month<br></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Sep 3, 2018 at 9:30 PM Marc Juul <<a href="mailto:marc@juul.io" target="_blank">marc@juul.io</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr">I created a page on the wiki with some learning resources for getting up to speed on the work we're starting to do on antenna design and impedance matching networks:<br><br>  <a href="https://github.com/sudomesh/disaster-radio/wiki/Antennas-and-impedance-matching" target="_blank">https://github.com/sudomesh/disaster-radio/wiki/Antennas-and-impedance-matching</a><br><br></div><div>Since we'll need a VNA for this work I included a comparison of different affordable VNAs.<br><br></div><div>Tomorrow evening we'll probably spend some time building a simple test setup with two computers displaying the RSSI from the RFM95 modules.<br></div><div><br>-- <br></div><div>marc/juul<br></div></div>
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