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ULNA-Lband-2S

cfbird·ULNA-Lband-2S·hardware/ULNA_Lband_2S/ULNA_Lband_2S.kicad_pcb

ULNA-Lband-2S PCB layout, top view — open source board by cfbird
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About the ULNA-Lband-2S PCB

ULNA-Lband-2S is an open source PCB design by cfbird, published on GitHub under the MIT license. It is a 4-layer board measuring 60 × 35 mm, with 68 components from 39 distinct parts.

Other key parts include the SKY67151-396LF and LT3042EDD#TRPBF. By type, the board carries 30 capacitors, 15 resistors, 12 inductors, 3 ICs, 3 connectors and 2 diodes.

It belongs with the audio designs in this gallery.

From the project

Two-stage ultra-low-noise amplifier for 1.0 – 2.2 GHz, built around a pair of Skyworks SKY67151-396LF GaAs pHEMT LNAs. SMA edge-launch in and out, powered over the output coax through an on-board bias-T, 60 × 35 mm, 4 layers.

Two-stage ultra-low-noise amplifier for 1.0 – 2.2 GHz, built around a pair of Skyworks SKY67151-396LF GaAs pHEMT LNAs. SMA edge-launch in and out, powered over the output coax through an on-board bias-T, 60 × 35 mm, 4 layers.

Four band tunes share one PCB — only three component values change. See DESIGN_NOTES.md §5.

Everything downstream of gen/netlist.py — schematic, PCB, BOM, preview — is emitted from one design database. Placement of the RF chain is solved, not hand-typed, so clearances are guaranteed rather than eyeballed.

Main components on the ULNA-Lband-2S

SKY67151-396LFLT3042EDD#TRPBF

ULNA-Lband-2S bill of materials (BOM)

68 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
SKY67151-396LF
U1, U2
1
LT3042EDD#TRPBF
LT3042
U3
1
DMG2301L
Q1
1
Amphenol 132289 (or generic edge-launch SMA)
SMA-EDGE-IN
J1
1
Amphenol 132289 (or generic edge-launch SMA)
SMA-EDGE-OUT
J2
1
BENCH DC
J3
1
0603 500mA fast
500mA
F1
1
LDO BYPASS
JP1
1
PESD0402-140 / RClamp0524P
ESD 0.2pF
D1
1
SMAJ18A
D2
1
BLM18AG102SN1
1k@100MHz
FB1
2
BLM15PX601SN1
600R@100MHz
FB2, FB3
1
Coilcraft 0402DC-22N
22nH
L1
2
Coilcraft 0402HP-2N0XJL
2nH
L2, L5
2
Coilcraft 0402HP-10NX
10nH
L3, L6
2
0402 0R jumper
0R
L4, L7
1
Coilcraft 0402DC-27N
27nH
L8
1
0603 wirewound 220nH
220nH
L9
2
GJM1555C1H200JB01
20pF
C1, C11
2
GJM1555C1H1R0CB01
1pF
C2, C12
Show 19 more
QtyPartRefs
4
DNP
C3, C10, C13, C20
5
GRM155R71H102KA01
1nF
C4, C7, C14, C17, C24
2
GRM155R71H103KA88
10nF
C5, C15
4
GRM1555C1H101JZ01
100pF
C6, C16, C21, C23
5
0402 X7R 50V
100nF
C8, C18, C25, C28, C31
2
GJM1555C1H8R2DB01
8.2pF
C9, C19
2
0805 X7R 25V
10uF
C26, C27
1
0805 X7R 16V
4.7uF
C29
1
0805 X7R 16V
10uF
C30
2
0402 1%
10k
R1, R7
2
0402 1%
2k
R2, R8
2
0402 1%
150R
R4, R6
1
0402 1%
37R4
R5
2
DNP
R10, R12
2
0402 0R
0R
R11, R17
1
0402 1%
165k
R13
1
0402 1%
47k
R14
1
0402 1%
402R
R15
1
0402 0.1%
49k9
R16

ULNA-Lband-2S design files

The KiCad project lives in the cfbird/ULNA-Lband-2S repository on GitHub; these links point at the commit this page was built from.

ULNA-Lband-2S: common questions

How big is the ULNA-Lband-2S PCB?

The ULNA-Lband-2S measures 60 × 35 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ULNA-Lband-2S?

68 components, from 39 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 ULNA-Lband-2S design files?

From the cfbird/ULNA-Lband-2S 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 ULNA-Lband-2S design in my own project?

Yes, under the terms of its MIT license, which cfbird chose for the repository.

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