[DisasterRadio] Learning about antennas and impedance matching

[John Fitz]

There are some very good applications notes available, especially the old
HP ones. They are a lil more advanced though and expect a decent level of
maths...

S-Parameters
http://hpmemoryproject.org/an/pdf/an_95.pdf
http://hpmemoryproject.org/an/pdf/an_154.pdf
And the updated Agilent versions of them:
http://www.sss-mag.com/pdf/hpan95-1.pdf
http://www.sss-mag.com/pdf/AN154.pdf

Spectrum Analyzers
http://literature.cdn.keysight.com/litweb/pdf/5952-0292.pdf
http://www.ab4oj.com/test/docs/sa_fundamentals.pdf

Network Analyzers
http://download.ni.com/evaluation/rf/Introduction_to_Network_Analyzer_Measurements.pdf
http://literature.cdn.keysight.com/litweb/pdf/5965-7917E.pdf

I also really like this book as an introduction to RF measurement devices
and techniques:
*Spectrum and Network Measurements
<http://library1.ga/_ads/929444FF027EC810E1EBCED57D754447>*

On Tue, Sep 4, 2018 at 11:22 AM Morgan Allen <morganrallen at gmail.com> wrote:

> This might be a good additional resource.
> Measuring Impedance without dedicated equipment.
> http://www.learnabout-electronics.org/ac_theory/impedance73.php
>
> Going to attempt to make it out tonight but reaaally bogged down with work
> this month
>
> On Mon, Sep 3, 2018 at 9:30 PM Marc Juul <marc at juul.io> wrote:
>
>> 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:
>>
>>
>> https://github.com/sudomesh/disaster-radio/wiki/Antennas-and-impedance-matching
>>
>> Since we'll need a VNA for this work I included a comparison of different
>> affordable VNAs.
>>
>> Tomorrow evening we'll probably spend some time building a simple test
>> setup with two computers displaying the RSSI from the RFM95 modules.
>>
>> --
>> marc/juul
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