ANTENNA PHYSICS This section will distill several equations regarding antenna theory and connect the dots using words wrapped around the concepts to enable a complete understanding of antenna theory --- for any technical level. Part 1: The vast difference between electron flow and electric current/displacement flow in a conductor. To distinguish and visualize the difference between Electron flow and electric current/displacement in a conductor we use the Newtons Cradle instrument --- often considered a toy. It is used to demonstrate transmission line logic including how waves of electric current propagate in a conductor, impedance mismatch, reflected waves, etc. etc.etc. A. Basic mechanics of wave propagation in a conductor. - Watch this video noting that one bearing is launched at a second resulting in the launched bearing coming to a stop and the second accelerating to the same speed/energy level as the first. Video clip 1 bearing slow . The concept here is, when a bearing is launched at a second stationary bearing that weighs the same, the first will come to rest exactly the depth of compression plus decompression which is approximately 10 nano-inches and the energy from the first will be transferred to the second. The displacement current was probably close to 700MPH. Think of the momentum/velocity as the magnetic energy and the compression the electric field. Look at 1 bearing of 5. Each bearing is accelerated contacting the adjacent, compressing decompressing individually and passing the energy to the next while coming to a stop almost in place.
Sweep of coax balance Coax balance at 1MHz Coax balance at 2MHz Coax balance at 5MHz Coax balance at 30MHz Coax balance at 10MHz Coax balance at 50MHz Coax balance at 500KHz Coax balance at 10KHz Coax balance at 100Hz Coax balance at 20Hz Coax balance at 20MHz Coax balance at 15MHz Coax balance at 10MHz KN5L PROBLEM VF PRO 1 KN5L problem 2 Coax loss 20MHz 41ft RG#316 measure source and load Coax loss 10MHz 41ft RG#316 measure source and load Coax loss 1 MHz 41ft RG#316 measure source and load Coax loss 1 kHz 41ft RG#316 measure source and load Coax loss 100 Hz 41ft RG#316 measure source and load Coax loss 20 Hz 41ft RG#316 measure source and dest DC pulse total 41ft 31ft RG316 and 12ft RG174 Sweep proof of 50R coax balanced media .5wl grounded line 1 Mike 3 .5wl perfect ground Radiation resistance of wire antenna web.docx Radiation resistance of wire antenna.docx A LEVEL 1 LOGICAL RENDITION CALCULATING RADIATION RESISTANCE.docx .5wl TLT 1968 K9AXN.docx .5wl TLT 1968 K9AXN Hand written Radiation resistance of 1/4wl dipole Scan20230422 160210.jpg Scratch Design a 1/4wl Dipole Scratch Design 1/4wl Dipole img Scan20230428 102324.jpg |