4 layers76 × 88.8 mm
4 layers76 × 88.8 mm
4Layers trl board
bvernoux/kicad_rf14KiCad RF Stuff
- Size
- 76 × 88.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 8
- Pads
- 60
- Tracks, vias
- 19, 387
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 17 Feb 2020
- Updated
- 17 Aug 2021
Overview
4Layers trl board is an open-source printed circuit board by bvernoux, from the bvernoux/kicad_rf repository on GitHub. It is a 4-layer board of 76 × 88.8 mm with 18 parts on 8 nets, routed with 19 tracks and 387 vias.
Its parts include 12 connectors, 4 resistors and 2 fuses.
README
OSHPark_4Layers_trl-board_v0_1/README.mdOSHPark_4Layers_trl-board_v0_1
This Board is based on Mario Hellmich's design see https://www.mariohellmich.de/projects/trl-cal/trl-cal.html
TRL Calibration Board for evaluation of SMA BELFUSE 142-0771-831(Up to 26.5GHz) connectors and for experimentation on series/shunt fixtures.
It contains following features:
- A thru standard for TRL
- A 50 Ohms match standard
- A 25 Ohms mismatch standard for verification
- An open standard for verification
- A short standard, used as a reflect standard for TRL
- A line of 45 mm length (Called also "Line 76mm" to reflect total length), used as a line standard for TRL
- A series fixture for 0805 components
- A shunt fixture for 0805 components
The board is designed assuming the following parameters (based on OSH Park 4 Layers 190Tg FR408-HR specifications):
- Base Material / Board thickness: 1.6 mm (63 mil)
- Center Conductor Width: 0.34036 mm (13.4 mil)
- Gap Width: 0.1524 mm (6 mil)
- Permittivity: 3.66 (3.68 @2GHz)
- Loss Tangent: 0.0092 @2GHz
- Copper Weight: 1oz outer (35µm), 1/2oz inner (17.5µm)
- Trace surface: Cu
- Impedance: 50 Ohms (+/-2 Ohms)
- PCB Finish: ENIG (Gold), compliant with IPC-4552
For more details on TRL see https://www.mariohellmich.de/projects/trl-cal/trl-cal.html
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 142-0771-831 | kicad:Southwest_Microwave_1092-02A-5 | J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12 |
| 2 | 100 | kicad:R_0402_1005Metric | R1, R2 |
| 2 | 50 | kicad:R_0402_1005Metric | R3, R4 |
| 2 | Fixture 0402 | kicad:C_0402_1005Metric | F1, F2 |
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Questions
How big is the 4Layers trl board PCB?
It measures 76 × 88.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the 4Layers trl board use?
18 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 4Layers trl board KiCad files?
From the bvernoux/kicad_rf repository on GitHub, at the commit this page was made from: the board is 4Layers_trl-board_v0_3/4Layers_trl-board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 4Layers trl board design in my own project?
Its repository states no licence, so its author keeps all rights: ask bvernoux before reusing the design.