You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allpages gapcontinue="Sat_Tracking_Controller" />
  </query-continue>
  <query>
    <pages>
      <page pageid="7" ns="0" title="STM32F4">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">= Links =
* [http://www.reddit.com/r/stm32f4/ Reddit group]</rev>
        </revisions>
      </page>
      <page pageid="27" ns="0" title="SWR/Power meter">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">
= Links =
* [https://www.youtube.com/watch?v=byF1FLdbUiA W2AEW Tutorial about directional couplers] (Very very good)
* [http://www.citrus-electronics.com/subpage.html QEX Article about a SWR meter using AD8307 logamps]
* [http://www.analog.com/media/en/training-seminars/tutorials/MT-094.pdf Microstrip and Stripline Design ] Analog Devices Tutorial
* [http://home.arcor.de/yo4gms/Directional%20Coupler%20pa0nhc.htm Directional Couplers / SWR detectors for 145MHz - 435MHz]
* [http://www.multek.se/engelska/engineering/pcb-structures-2/embedded-microstrip-impedance-calculator-2 Multi-Teknik Impedance calculator]
* [http://www.qsl.net/va3iul/Microstrip%20impedance/How_to_measure_the_impedance_of_a_micro-strip_Transmission_Line.htm How to measure transmission line impedance]
* [http://www.antenna-theory.com/tutorial/txline/transmissionline.php Introduction to transmission lines]
* [http://www.antenna-theory.com/tutorial/smith/chart.php Smith chart tutorial]
* [http://chemandy.com/technical-articles/single-pages/relative-dielectric-constant-method.htm Determine the dielectric constant]

= Step 1 =
The plan is to make a test setup, somewhat like what W2AEW did, but with an embedded microstrip design like in the QEX article. The idea is then to measure properties with my N2PK VNA. Or at least, try to.

== Impedance ==
So, the big problem, how wide should the traces be. According to the calculator from Multi-Teknik, referencenced in the QEX calculator, I get a width that varies a bit around 2.1mm (trace thickness = 0.035mm, h=1.6mm, total height = 3.2mm, Er=4.2...4.8).

== Results ==
After constructing the PCB, measurements indicate it works very well up to 60 MHz (the very limit of my measurement capabilities with the N2PK VNA). Coupling factor is 30dB (or should I say -30dB? idk), Directivity is another 30dB. Then, measuring at the radio club, I noticed that the directivity diminished with frequency, leaving only 12dB at 500MHz.

Next step is measuring the impedance of the embedded microstrip lines as described [http://www.qsl.net/va3iul/Microstrip%20impedance/How_to_measure_the_impedance_of_a_micro-strip_Transmission_Line.htm here]. I know who to call for this.</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>