Ham Doc

SISTEL di Ing. Re Claudio

Extremely Wideband Antennas ( EWB)- Developed with Ed Shortridge

Pictures of what happens in the " World of Broadcasting " :

	LighteningSamples1.doc
	Radio Maria World (.ppt - 10 Mb)

Baluns - Toroids - SWR Bridges - Common Mode Currents :

	SWR Bridges-Baluns.jpg
	SWR Bridge schematic .gif
	S11Balun1:1 Loaded 50 Ohm .gif
	S11Balun1:1 Loaded 50 Ohm Unbalanced at one pin .gif
	S11Balun1:1 Open.gif
	UHF Bead1.gif
	Pattern Measurements with and without a Balun .pdf
	Guanella Wide Band Balun 4:1 and 1:1 practical results .xls

Q - Stubs :

Antenna tests and measurements with Ham tools :

Professional scaled Measurements :

	4.5 : 1 Scaled measurements from Shively Labs.pdf
	Serious and witty : http://www.sm.luth.se/~urban/master/

Field Measurements :

	Near Field Probes : Kanda.pdf
	Calibration of Directional Antennas : Trazska1.doc
	Low Frequency E - Field Standard : Trazska2.doc

Coaxial cables :

Ionic Liquid Antenna :

	Picture of a GP- ILA at 145 Mhz
	ILA Salinity Probems.JPG
	Why not use the Human Body ? : ONR_20010507.pdf
	Variable delay line with Kerosene : Croce del sud 1.gif

The Use of Trees as Low Efficiency Radiators :

	IEEE Article : Trees performing as Radio Antennas: 01141017.pdf
	TreeSmithChart.gif
	TreeReturn Loss.gif
	TreeSWR.gif
	Tree1.jpg
	Tree2.jpg
	TreeCouplingSetup.GIF
	Gain measurements comparing a 11m tree with an elevated GP at 13770 Mhz-Ionosferic-GP Upper Trace
	Gain measurements comparing a 11m tree with a WL/4 Monopole at 13780 Mhz - Ionosferic - Tree Upper trace
	Gain measurements comparing a 11m tree with a WL/4 Monopole at 14500 Mhz- Line Of Sight - Tree Upper trace

Propagation in Lossy Medium :

Why a Capacitor is not a good Antenna :

Radiation from from Capacitors : 0305062.pdf

Formula of the Capacitance of a Short Dipole :

DipoleCapacitance.GIF

Loops Efficiency :

	1mSquaredLoop-Cu22mm.JPG
	1mSquaredLoop Inside the Wheeler's Cap.JPG
	1mSquaredLoopEfficiencyMeasurements.bmp

Tetrahedral Antenna from Alan Boswell :

TETRAHEDRAL ANTENNA.doc(2.6Mb)

Antenna books or Courses :

	Very Good Antenna Courses on Line : http://www.ece.mcmaster.ca/faculty/georgieva/
	Russian Antenna Book 532 pages : ayzenberg.djvu ( 6Mb)
	Russian HAM Books Link : http://www.translate.ru/url/tran_url.asp?lang=ru&direction=re&template=General&cp1=CP1251&cp2=NO&autotranslate=on&transliterate=on&url=http%3A%2F%2Fwww.cqham.ru%2Flib.htm
	Plug in for reading the files .djvu http://www.lizardtech.com/download/dl_download.php?detail=doc_djvu_plugin&platform=win

Maxwell - Near -Far Field :

	Amplitude components of the E-Field - From "Antennas " Kraus-Marhefka: Maxwell.gif
	Dipole Field Components from Vadim Devidov : Elem_dip0.pdf
	Groundwaves.htm
	From "Antennas" Kraus - Marhefka : BasicAntennas.gif
	EM Far Field in space :EM.gif
	BASICS ON MAXWELL LAWS
	Very Basic : http://www.ieee-virtual-museum.org/search/index.php - Search : Maxwell

Maxwell - Near -Far Field

Ground Planes - Radials

	Radials with WL/4
	Radials with WL/2
	Different Vertical patterns for different length

Easy Cosmology :

	From MacroCosm to MicroCosm - Powers of 10 : index.html
	Big Bang Riddles - No math : cup.pdf
	Big Bang Riddles - with some math : rev.pdf