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university:labs:tlines_standing_waves_adalm2000 [01 Nov 2021 18:16]
Mark Thoren Lots of text updates, add in LTspice figures.
university:labs:tlines_standing_waves_adalm2000 [01 Nov 2021 18:28]
Mark Thoren Link to m1k artificial tline experiment.
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 ===== A Transmission Line Playground ===== ===== A Transmission Line Playground =====
 A very flexible "​transmission line plaground"​ LTspice simulation can be used to develop intuition about the operation of transmission lines, standing waves, and the differences between a transmission line and a model constructed of lumped elements:\\ A very flexible "​transmission line plaground"​ LTspice simulation can be used to develop intuition about the operation of transmission lines, standing waves, and the differences between a transmission line and a model constructed of lumped elements:\\
 +<WRAP round download>​
 [[downgit>​education_tools/​tree/​master/​m2k/​ltspice/​standing_waves_and_tlines|Standing Waves Lab LTspice files]] [[downgit>​education_tools/​tree/​master/​m2k/​ltspice/​standing_waves_and_tlines|Standing Waves Lab LTspice files]]
 +</​WRAP>​
 \\ \\
 Figure 8 shows an overview of the simulation schematic. Note that two sources are shown - connect V2 (sinewave source) via jumper X1 for AC analysis or time domain analysis with sinusoidal excitation. For step response, move X1 to connect V1 to the circuit. Note that all component values are parameterized,​ and are calculated depending on what the known parameters are in the "​Parameter Setup" section. Make sure to set one column as SPICE directive and the other as comment (right-click,​ escape to bring up the options.) Figure 8 shows an overview of the simulation schematic. Note that two sources are shown - connect V2 (sinewave source) via jumper X1 for AC analysis or time domain analysis with sinusoidal excitation. For step response, move X1 to connect V1 to the circuit. Note that all component values are parameterized,​ and are calculated depending on what the known parameters are in the "​Parameter Setup" section. Make sure to set one column as SPICE directive and the other as comment (right-click,​ escape to bring up the options.)
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 Both measurements gave the same result. Both measurements gave the same result.
  
-Questions:+===== Questions ​===== 
 + 
 +  * If the first null is known, in the given the Network Analyzer frequency response plot, how long is the tube?
  
-If the first null is known, in the given the Network Analyzer frequency response plothow long is the tube?+====== Going Further ====== 
 +The [[university:​courses:​alm1k:​alm-lc-atline|Artificial Transmission Lines - ADALM1000]] activity includes a complete lumped-element artificial transmission line constructed from capacitors and inductorsas well as detailed measurements of the standing wave patterns along this circuit.
  
 **Return to Lab Activity [[university:​courses:​electronics:​labs|Table of Contents]].** **Return to Lab Activity [[university:​courses:​electronics:​labs|Table of Contents]].**
  
university/labs/tlines_standing_waves_adalm2000.txt · Last modified: 01 Nov 2021 18:28 by Mark Thoren