High-reliability electronics design, from schematic to production-ready routing.
A PCB we deliver is a PCB you can manufacture in series, certify without rework, and assemble in the factory without surprises. EMC, IPC standards and DFM are baked into the schematic — not bolted on after the prototype goes up in smoke.
- CE
- FCC
- ETSI EN 300 328
- IPC-A-610
- IPC-2221
Routing isn't a detail — it is the product
Most industrial projects that fail EMC certification don't suffer from a component issue, they suffer from a routing issue. Perforated ground planes, mishandled return currents, badly placed decoupling: these errors don't show up on the schematic, but they get measured in the anechoic chamber.
At AESTECHNO, routing is treated as an engineering discipline in its own right. We design boards that are pre-compliant with CE/FCC, which means the first round of testing in the anechoic chamber is used to verify compliance — not to fix it.
High frequency: MIPI, LPDDR4, PCIe, USB 3.x
Modern buses (MIPI CSI-2 at 4.5 Gbps, LPDDR4 at 4266 MT/s, PCIe Gen4 at 16 GT/s) don't tolerate any approximation: differential impedance control to ±5%, length-matching to the mil, rigorous anti-skew, eye diagram simulation before fab.
On a recent project integrating an i.MX 8 with LPDDR4, our routing reached 4266 MT/s with zero errors on test bench at -20°C / +85°C — first try. That discipline is learned, and we have it.
RF up to 10 GHz — smart meter, industrial IoT, radio
RF design demands skills distinct from digital: impedance matching, microstrip / stripline lines, inter-stage isolation, substrate selection (FR4 up to 2 GHz, Rogers above), thermal management of PAs. We routinely design sub-GHz radio modules (LoRaWAN, Sigfox, NB-IoT) up through the 2.4 and 5 GHz bands (Bluetooth 5.4, Wi-Fi 6E).
For the associated certifications (ETSI EN 300 328, FCC Part 15, ARIB STD-T108), we deliver the technical file inputs in parallel with development.
EMC pre-compliance from the schematic
EMC can't be retrofitted at the end of a project. It has to be designed in. Our schematics include from day one the correctly-sized power filters, controlled ground returns, shielding at critical interfaces, and ESD/surge protection at exposed inputs.
Measurable result: on the industrial projects we've run, anechoic chamber testing happens with no rework. If a mask overshoot does appear, it's at -3 dB — fixable by adding an SMD capacitor — not at -15 dB which would force a PCB re-spin.
FAQ
- Do you work with Chinese or European manufacturers?
Both. We match the manufacturer to target volume (low-volume Europe, mid-volume mix, high-volume Asia), IP constraints and industrial requirements. For medical and defence projects, we favour European manufacturers certified ISO 9001 / IATF 16949. For high-volume consumer projects, Asia (China, Vietnam) remains competitive provided the manufacturer is audited.
- Can you take over an existing design and bring it through certification?
Yes — it's actually one of our typical cases. We first run a technical review (analysis of schematic, routing and component choices), identify EMC/RF weak points, and propose either targeted fixes (partial re-spin) or a full redesign depending on cost/benefit. The initial diagnostic takes 3 to 5 days.
- What's your frequency limit?
Mastered RF design up to 10 GHz. Beyond that (mmWave 24-77 GHz, radar / 5G applications), we work in extended team mode with a specialised partner. The simulation skills (HFSS, ADS) are distinct and the PCB manufacturing chain changes radically.
Firmware
Industrial firmware isn't a script that works on delivery day. It's a system that has to keep running after ten years of series production, support secure OTA updates, and withstand a regulatory environment that keeps moving (CRA, IEC 62443).
Industrialization
The classic trap: a working prototype that needs six months and a re-spin to hold up in series production. Our technical signature is the opposite — DFM, IPC standards and testability are integrated into the initial schematic. The prototype is already a manufacturable board.
Medical
Designing a medical device isn't about retrofitting an industrial board. It's about embedding patient safety, software traceability and risk management into every architectural decision, from specification to MDR technical file.