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HF Amplifier

QSUM-UNB·Frequency-Offset-Lock·HF Amplifier/hardware/HF Amplifier.kicad_pcb

HF Amplifier PCB layout, top view — open source board by QSUM-UNB

About the HF Amplifier PCB

HF Amplifier is an open source PCB design by QSUM-UNB, published on GitHub. It is a 4-layer board measuring 30 × 30 mm, with 17 components from 11 distinct parts.

Other key parts include the ADA4637. By type, the board carries 6 capacitors, 5 resistors, 3 connectors, 2 inductors and 1 IC.

It belongs with the audio designs in this gallery.

From the project

PCB designs for a standalone optical frequency-offset locking system.

- © 2026 by K. Shalaby, P. Trottier, T. Reuschel, and B. Barrett - PCB designs licensed under CC BY-NC-SA 4.0

- This repository contains the PCB designs for a standalone optical frequency-offset locking system. All PCB designs were developed in KiCAD. - Files for each circuit component (or tile) are organized into the directory structure described below. - Details about the locking system and its performance can be found in our publication: - K. Shalaby et al, Standalone optical frequency-offset locking electronics for atomic physics, Rev. Sci. Instrum. 97, 033004 (2026). Pre-print…

HF Amplifier, from the project README
From the project README

Main components on the HF Amplifier

ADA4637

HF Amplifier bill of materials (BOM)

17 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ADA4637
U1
2
142-1701-626‎
J1, J2
1
Input Power
J3
2
FerriteBead
FB1, FB2
2
1UF
1uF
C1, C2
1
100NF
1uF
C3
1
1UF
10nF
C4
1
100NF
10nF
C5
1
1UF
1uF
C6
3
1K
R1, R2, R3
2
0
R4, R5

HF Amplifier design files

The KiCad project lives in the QSUM-UNB/Frequency-Offset-Lock repository on GitHub; these links point at the commit this page was built from.

HF Amplifier: common questions

How big is the HF Amplifier PCB?

The HF Amplifier measures 30 × 30 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the HF Amplifier?

17 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the HF Amplifier design files?

From the QSUM-UNB/Frequency-Offset-Lock repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the HF Amplifier design in my own project?

The repository has no license, so all rights stay with QSUM-UNB. Use it as a reference, and ask the author before reusing the design.

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