LoRa Frequency Converter PCB Design

Fix the errors.

0:19

Thought for a moment

I’ll re-check the live DRC, then try to clear what’s fixable now. Since the current errors are RF/LO airwires caused by removing the temporary traces, I’ll first see whether the stale routing job has cleared; if it has, I’ll route, otherwise I’ll document the blocker and avoid making a fake connectivity-only fix.

flux

0:47

Thought for 3 sec

1/4 Re-check live DRC errors and routing job state

Thought for 2 sec

Completed 5 design checks — found 15 issues.

Read layout.

Thought for a moment

I’m blocked by credits before I can make further tool changes.

Current live state:

RF/LO rules were restored to the intended manufacturing values: 2.9 mm RF/LO trace width, 1 mm keepout, top-layer routing.
Temporary narrow RF/LO traces were removed.
Current DRC has 13 RF/LO airwire errors and 1 overlapping copper error.
The board is therefore not manufacturing-ready yet.
A previous stale/timed-out autorouting job had also blocked the RF-width autoroute attempt earlier.

What remains:

Clear/discard the stale active routing job if it is still present.
Fix the overlapping copper error first.
Route the 13 RF/LO airwires with the restored 2.9 mm top-layer RF geometry.
Re-run DRC until airwires/overlaps are zero.
Replace placeholder SBL-1+ and SMA footprints with exact manufacturer footprints before final fabrication release.

Fix overlap first

List RF airwires

Clear routing job

Check exact footprints

Rerun DRC

Reviews

Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
16.1k
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Generic Resistor
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A common return path for electric current. Commonly known as ground.
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20.5M
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An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
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Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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43.0M
RMCF0805JT47K0
General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
jharwinbarrozo
1.2M
875105359001
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jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
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1.1M
1070TR
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700.5k

Project Name

170-27 MHz LoRa Converter

Description

2-layer 170 MHz ↔ 27 MHz bidirectional LoRa converter using SBL-1+ passive mixer and Si5351A LO

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$19.45–$19.49
Digi-Key	$15.30
HQonline	$0.03
LCSC	$59.17–$63.71
Mouser	$15.90
TME	$7.77
Verical	$18.12–$22.04

Controls

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jadestarwatcher / 170-27 MHz LoRa Converter

Schematic