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Lukas Henkel

@QVHenkel • 24,107 subscribers

All things 3D | Rendering | Simulation | Electronics | StartUp | CEO engineering services company - views are my own

Shorts

The radiation pattern does not look pretty (yet) but it looks like using the speaker port as antenna might be feasible

The radiation pattern does not look pretty (yet) but it looks like using the speaker port as antenna might be feasible

99,793 views

I've set up a simulation of a Rotman lens to drive a phased array in Elmer. The matching of the ports is poor, causing lots of internal reflections, resulting in unwanted side lobes and poor channel separation. Nonetheless I think it still demonstrates the principle nicely 😊

I've set up a simulation of a Rotman lens to drive a phased array in Elmer. The matching of the ports is poor, causing lots of internal reflections, resulting in unwanted side lobes and poor channel separation. Nonetheless I think it still demonstrates the principle nicely 😊

967,373 views

In case you ever wanted to see a visualization of the field in a microstrip filter 😄

In case you ever wanted to see a visualization of the field in a microstrip filter 😄

95,670 views

the simulation shows the separate resonant modes of the dual band niche antenna on the CM4 module

the simulation shows the separate resonant modes of the dual band niche antenna on the CM4 module

137,738 views

Another look at the internal structure of the open-source smartwatch. In the slideshow the design looks deceptively simple considering the number of components in the watch 😅

Another look at the internal structure of the open-source smartwatch. In the slideshow the design looks deceptively simple considering the number of components in the watch 😅

39,264 views

I wanted to see where the hotspots in my ultrasonic cleaner are and which water levels to avoid to get the most even pressure distribution 😄

I wanted to see where the hotspots in my ultrasonic cleaner are and which water levels to avoid to get the most even pressure distribution 😄

46,502 views

I'm using openEMS to analyse VIA delays, as Altium cannot compute these and requires them to be added manually for each VIA type

I'm using openEMS to analyse VIA delays, as Altium cannot compute these and requires them to be added manually for each VIA type

30,024 views

A visualisation of different velocity factors in a PCB. Both simulations use the same excitation and port parameters. Only the permittivity is different, showing how the signal travels much faster in low Dk dielectrics. This simulation shows an embedded trace. A signal on an outer layer also travels faster because part of the EM field propagates through air, which has a Dk very close to 1

A visualisation of different velocity factors in a PCB. Both simulations use the same excitation and port parameters. Only the permittivity is different, showing how the signal travels much faster in low Dk dielectrics. This simulation shows an embedded trace. A signal on an outer layer also travels faster because part of the EM field propagates through air, which has a Dk very close to 1

35,256 views

Tried to visualise EM simulation output in 2D using BVTK nodes. I've simulated the voltage step using openEMS

Tried to visualise EM simulation output in 2D using BVTK nodes. I've simulated the voltage step using openEMS

26,227 views

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A different view with a surface between the ground plane and filter structure warped only by the Z component of the e-field to make the visualization a bit cleaner

A different view with a surface between the ground plane and filter structure warped only by the Z component of the e-field to make the visualization a bit cleaner

29,544 views • 4 months ago

I´m experimenting with using ultrasonic surface waves on the trackpad of the laptop project to enable multi-touch haptic feedback. This should make it possible to generate haptic feedback under individual fingers for multi-touch gestures. Elmer FEM software is a really helpful tool to model the interface between the piezo elements and the coverglass as well as the wave propagation. Best of all it is open-source 😁

I´m experimenting with using ultrasonic surface waves on the trackpad of the laptop project to enable multi-touch haptic feedback. This should make it possible to generate haptic feedback under individual fingers for multi-touch gestures. Elmer FEM software is a really helpful tool to model the interface between the piezo elements and the coverglass as well as the wave propagation. Best of all it is open-source 😁

42,295 views • 2 years ago

Some chip manufacturers use selectively depopulated BGAs, but do not provide pin coordinates that can be conveniently imported. For such cases I like to use a transparent always-on-top overlay of the datasheet. It's worked great so far, but I'm still wondering if there's an easier way.

Some chip manufacturers use selectively depopulated BGAs, but do not provide pin coordinates that can be conveniently imported. For such cases I like to use a transparent always-on-top overlay of the datasheet. It's worked great so far, but I'm still wondering if there's an easier way.

19,319 views • 1 year ago

Running the Yocto image on the open-source PiMX8 module. The Piunora is a nice compact CM4 baseboard, quite handy for testing.

Running the Yocto image on the open-source PiMX8 module. The Piunora is a nice compact CM4 baseboard, quite handy for testing.

17,650 views • 1 year ago

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