2 layers98 × 27 mm
2 layers25.9 × 40.6 mm
LISN mate
compuphase/LISN-mate9LISN mate for a dual channel LISN
- Size
- 25.9 × 40.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 5
- Nets
- 5
- Pads
- 26
- Tracks, vias
- 36, 28
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 29 Sep 2023
- Updated
- 7 Jan 2024
Overview
LISN mate is an open-source printed circuit board by compuphase, from the compuphase/LISN-mate repository on GitHub. It is a 2-layer board of 25.9 × 40.6 mm with 5 parts on 5 nets, routed with 36 tracks and 28 vias.
README
README.mdLISN-mate
This design is for a "LISN mate", suitable for a dual channel LISN. In particular, it was designed for the dual DC LISN published in Elektor [2021], and which is available from the "elektorstore" as a kit.
A LISN lets you test the conducted emissions in power cables. If the emissions exceed the limit, and you need to adjust the design to reduce the RF noise, the first thing you will want to know is whether the noise is primarily "common mode" or "differential mode". The LISN-mate is a tool that tells you that.
When you want a quantitative value for the common mode noise and/or the differential mode noise (in dBµV), a LISN-mate is actually somewhat complex circuit. However, there is just a single limit for conducted emissions in the EMC/EMI standards, so you do not really need the absolute values. What you need to know, whether the emissions are primarily either common mode or differential mode. For a LISN-mate that gives you an answer on that issue, all it takes is a transformer.
The design is in KiCAD. Gerber files for the PCB are provided as well. The components are:
| Number | Part number | Manufacturer | Description |
|---|---|---|---|
| 1 | ADT1-6T | Mini-Circuits | RF Transformer 50 Ohm, 30 kHz - 125 MHz |
| 4 | 132289 | Amphenol | SMA receptable, edge-mount |
| 1 | 4607 | Adafruit | Copper foil, 0.1 mm thick |
Since the case is in plastic, and therefore not shielded, I added a shield from copper foil. It is soldered onto the SMA connectors.
The case is 3D printed; an STL file is provided. The design is in OpenSCAD (and provided as well).
License
The LISN-mate is distributed under the CC BY-NC-SA 4.0 license (Attribution-NonCommercial-ShareAlike 4.0 International).
You are free to:
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
NonCommercial - You may not use the material for commercial purposes.
ShareAlike - If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Acknowledgement
For the 3D printed case, this project uses the Chamfered primitives for OpenSCAD v1.2 by TimeWaster, which is published under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 licence.
Parts
5| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | IN | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J3, J4 |
| 1 | CM | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J2 |
| 1 | DM | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J1 |
| 1 | Transformer_1P_SS | visualplace:SOP6 | T1 |
Questions
How big is the LISN mate PCB?
It measures 25.9 × 40.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LISN mate use?
5 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LISN mate KiCad files?
From the compuphase/LISN-mate repository on GitHub, at the commit this page was made from: the board is lisn-mate.kicad_pcb and its schematic lisn-mate.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LISN mate design in my own project?
Its repository states no licence, so its author keeps all rights: ask compuphase before reusing the design.
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