https://github.com/spaceteam/sts1_gs_trx_switch

Simple PCB for transmit/receive switching for our groundstation
https://github.com/spaceteam/sts1_gs_trx_switch

Last synced: 6 months ago
JSON representation

Simple PCB for transmit/receive switching for our groundstation

• Host: GitHub
• URL: https://github.com/spaceteam/sts1_gs_trx_switch
• Owner: SpaceTeam
• License: mit
• Created: 2023-10-06T13:09:17.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2023-10-06T13:26:33.000Z (over 2 years ago)
• Last Synced: 2025-01-24T16:28:19.550Z (over 1 year ago)
• Size: 5.82 MB
• Stars: 0
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# Ground Station TRX Switch

This boards provides sequencing and switching for transmit and receive path of a satellite groundstation based on two galvanically isolated inputs.  

It features an on-board LNA with filter and pre and post filtering for an external power amplifier.  

It also provides ~30V switched for the PA derived from one common 48V supply.

It is controlled by an Arduino Nano which is used for timing.

It features two high-side MOSFET outputs for enabling a PA and LNA and three coaxial relays for RX/TX switching and antenna grounding (when neither RX nor TX is enabled).

The design was built for around 435MHz but probably is easy to adapt to different frequencies up to 3GHz.

![v2.0 Front side 3D render](images/v2.0_front.png)

![v2.0 Back side 3D render](images/v2.0_back.png)

## Ordering

The RF design is built for the "standard" 1.6mm thick JLCPCB 4-layer stackup consisting of the following layers:

- 35µm Outer copper

- 210.4µm Prepreg (7628, RC 49%, 8.6mil)

- 15.2µm Inner copper

- 1.065mm Core

- 15.2µm Inner copper

- 210.4µm Prepreg (7628, RC 49%, 8.6mil)

- 35µm Outer copper

For finish please choose ENIG.

## License

All files in this repository are licensed under the MIT license EXCEPT for the files in the `/3d` directory.

- Arduino Nano: By Andrew Whitham (https://grabcad.com/library/arduino-nano--1), noncommercial public use allowed (https://help.grabcad.com/article/246-how-can-models-be-used-and-shared?locale=en)

- TE HF3-53: Copyright TE Connectivity (https://www.te.com/usa-en/product-1462051-2.html)

- Molex 73251-2120: Copyright Molex LLC (https://www.molex.com/en-us/products/part-detail/0732512120)