Various Papers

 

pacificon2012.pdf

    Optimizing the Resonant Feed Line, 20 meter antenna.

Software Defined Radio from QRP Quarterly, Part 4

    Here’s the fourth installment of my Software Defined Radio article in QRP Quarterly.

DSPExplorer Paper from QRP Quarterly

    A tool for learning DSP Processing Techniques.

Intro2SDR.zip   

   You can download the presentation and unzip here.  Start with “SDRnoMath.html”.

SimSmith QRP Quarterly Article

    An introduction to Smith Charts and my Smith Chart software.

Intro2SDR.key
    An intuitive approach to understanding Software Defined radio and DSP in general.  Shows how general purpose filters and ’90 degree phase delays’ are implemented.  Lots of little waveform videos.  This is a Keynote file.  Below is the HTML version.Papers_files/Intro2SDR.keyPapers_files/Intro2SDR_1.keyshapeimage_2_link_0

Software Defined Radio from QRP Quarterly, Part 3

    Here’s the third installment of my Software Defined Radio article in QRP Quarterly.

Software Defined Radio from QRP Quartertly, Part 2

    Here’s the second installment of my Software Defined Radio article in QRP Quarterly.

Software Defined Radio from QRP Quarterly, Part 1b

    Here’s the first installment of my Software Defined Radio article in QRP Quarterly.

Software Defined Radio from QRP Quarterly, Part 1a

    Here’s the first installment of my Software Defined Radio article in QRP Quarterly.

Using Chokes and Traps

  Here I explore how chokes and traps can be used to deal with feed line currents.

Feed Line Currents for Neophytes

   Here I explore the issue of Feed Line Currents, what causes them and how to control them.

Reverse Engineering the Coaxial Dipole

    Here I build a 24.8 MHz coaxial dipole and....   figure out why it works as it does.

Refining an End Fed Vertical Dipole.pdf

    How to design and construct a Resonant Feed Line vertical dipole. Same material as Pacificon 2012 paper below.

Refining an End Fed Vertical Dipole.pdf

    How to design and construct a Resonant Feed Line vertical dipole. Same material as Pacificon 2012 paper below.

FundamentalsOfDSP.pdf

    My notes for the “Fundamentals of DSP” presentation from the Norcal forum at Pacificon ’13.  you can get the support DSPExplorer schematics here (DSPFundementals.zip) and DSPExplorer on the DSPExplorer page above.

practicalSmithChart.pdf

    My slides form the Pacificon ’14, “Practical Smith Charts”.

IntroToSmithChartSoftware.pdf (Pacificon13, Pacificon14 and Dayton14)

    My lecture notes from “Introduction to Smith Chart Software” Pacificon ’13.  This was a highly interactive presentation with most information being conveyed through use of SimSmith.

Pacificon13.pdf

    My slides form the Pacificon ’13 Antenna forum: “LESSONS FROM THE SMITH CHART”.