Early hardware company building an intelligent system for commercial buildings.
I need a guru who has genuinely shipped products through FCC Part 15 certification and lab-measured ambient RF harvesting at sub-microwatt power density — not just simulated. Background in e-peas, Powercast, Atmosic, or a Tentzeris-/Sample-style academic rectenna lab. PCB-trace antennas from UHF (470 MHz) through 6 GHz Wi-Fi, rectenna front-ends for −25 dBm cold-start.
**The board:** ~100 components, ~$360 BoM, KiCad 9, planned 6L. Seven simultaneous active radios spanning sub-GHz to 60 GHz, including a 4-antenna UWB AoA SoC and a 60 GHz mmWave AoP radar. Three BGAs (largest FCBGA-180, smallest BGA-74 at 0.4 mm pitch). Plus five ambient-RF harvest paths (915 MHz, 2.4 GHz, 5 GHz, cellular, UHF TV) feeding per-band hardware-NV coulomb counters. Schematic at 490 ERC violations / 99 unwired stubs.
BoM and PCB schematic stubbed → fab-ready, RF-coexistent, FCC-defensible
- Wire 99 stubs to 0 ERC errors (KiCad 9 hierarchical sheets)
- TX/RX isolation matrix across all 7 radios; identify desense paths; spec antenna placement, shielding, BAW filtering (BAW on BoM)
- Replace ceramic chip antennas with printed PIFAs, LPDAs, dual-pole stacked patches, slot antennas to improve harvesting validated against measured ambient density, not assumptions
- Multi-band rectifier matching, MPPT, transparent-rectenna-over-PV trial
- 6L stackup spec, controlled-Z RF feeds, BGA escape, laminate decision
- EMC pre-compliance memo + bring-up test plan (S11, gain, coexistence)
... Show more