Michael Katzmann🐈Complete Smith chart GTK4 widget ... (for the few who write microwave /RF applications for Linux)
https://github.com/VK2BEA/GTK4-Smith-Chart/tree/main
N-gated Hacker NewsAh, the Smith chart—a dazzling adventure into the mystical realm of grid transformations, because who doesn’t crave a riveting tale about Cartesian grids becoming something else entirely? 🤓✨ Prepare to be spellbound by equations so thrilling, your calculator might just spontaneously combust. 🔥📈
https://www.johndcook.com/blog/2025/10/23/smith-chart/ #SmithChart #GridTransformations #MathAdventure #CalculatorMagic #HackerNews #ngated
https://www.johndcook.com/blog/2025/10/23/smith-chart/ #SmithChart #GridTransformations #MathAdventure #CalculatorMagic #HackerNews #ngated
Hacker NewsHow to Make a Smith Chart
https://www.johndcook.com/blog/2025/10/23/smith-chart/
#HackerNews #SmithChart #Tutorial #HowTo #Electronics #Engineering
rogeliopHow to slap that pesky impedance into compliance...
Søren KjærsgaardMy first #HB9CV #antenna, believe it or not, made from 5mm brake lines and a foot of 15mm copper pipe 🙂
I need it for a 70cm radio #foxhunt event in a couple days - looked different places for design guidelines, some of them came up with quite different results 🤷🏼♂️🤨
Decided to just have go at it, based on a combination of what I could find in the legendary #Rothammel antenna book and some online sources and it turned out quite well 😃
Resonance is a bit low, 431MHz, but it’ll do fine as a direction finding device: what I really want is the characteristic kidney shaped radiation pattern, allowing me to turn the antenna backwards, looking for a minimum in the received signal.
Funny to see how the #smithchart impedance plot has a distinct turn at the resonance frequency 🤓
#rfengineer #hamr #antennadesign #testandmeasurement #electronicsengineering
ON5ZO-OQ5M#hamradio #rfdesign #smithchart
#nerd #amateurradio #impedancematching
They're doing huge road works here...
Jim "Ham on a Bike"While under a High Wind Warning >50 MPH & up to 4" of rain from remnants of Helene, reacquainting myself with #Smithchart measurements and building #KM4CFT Jonathan's #qrp #EFHW in a linked configuration for 40,30,20,17 & 15 meters. #AmateurRadio #HamRadio
amen zwa, esq.#ZachStar says the scariest thing in #EE is the #SmithChart. I am of a different view. Many E&M topics, including resonant cavities, waveguides, antennae, etc., are far more daunting than impedance matching transmission lines.
Sure, a paper Smith Chart is not so hot, but a Smith Chart slide rule is quite fun to use. And an HP network analyser with a built-in Smith Chart makes it all definitely non-scary.
The scariest thing you learn in Electrical Engineering | The Smith Chart
Bob HarveyIn an other life I did a lot of #RF Radio Frequency work. Transmission line principles were bread and butter.
This #article explains a lot in a small space. Recommended.
It makes use of a #SmithChart, one of the cleverest bits of maths I know. There is a link on the page I gave that jumps to an equally good explantation of smith charts.
#Electronics #Mathematics #Impedance #Radio #RadioTheory #Calculation
xameerAn amp is unconditionally stable if the magnitudes of the reflection coefficients at the source, load and the amplifier's i/o ports are simultaneously < 1
requirement : amp be a linear network with no poles in the right half plane
#Antenna is a one port network #smithchart
requirement : amp be a linear network with no poles in the right half plane
#Antenna is a one port network #smithchart