The 2025 IEEE MTT-S International Microwave Symposium (IMS), held June 15–20 at the Moscone Center in San Francisco, brought together the brightest minds in wireless systems, near-field wireless power transfer (NFWPT), and low-Earth orbit (LEO) satellite communications. NPI Services was on-site to hear firsthand how new technologies are reshaping product roadmaps, and how early-stage sourcing, compliance planning, and ROM supply chain analysis can help accelerate time-to-market for RF-enabled devices.
From implantable wearables to satellite ground terminals, the demand for efficient, compact, and compliant wireless solutions is growing. NPI Services partners with hardware innovators by supporting their engineering, operations, and procurement teams with the material sourcing, risk evaluation, and project management expertise required to move from prototype to production with confidence.
Whether you’re planning your next RF-powered product or optimizing existing builds for scale, here’s what your supply chain and program teams need to know now.
Miniaturization and Near-Field Wireless Power Transfer: The Quiet Revolution
The demand for smaller, smarter, and wirelessly powered devices, from smart glasses and glucose monitors to cochlear implants, is accelerating. At IMS, teams from Renesas, NuCurrent, and Graz University of Technology discussed the core challenges in scaling down wireless power without compromising efficiency or safety.
NuCurrent: Efficiency and EMI Are Still the Biggest Barriers
In his WPT Bootcamp talk, Alberto Peralta (CTO, NuCurrent) outlined the challenges many OEMs face in designing near-field wireless power transfer (NFWPT) systems:
- Coil-to-coil efficiency and spatial misalignment
- Electromagnetic interference (EMI) management
- Thermal rise and SAR compliance for body-adjacent devices
To address these, NuCurrent developed GENA, an in-house EDA platform that enables advanced simulation of circuit, thermal, and EMI interactions. While NPI does not offer simulation services directly, we often collaborate early with engineering teams who use these tools to validate design tradeoffs before sourcing.
NFC Wireless Charging: From Niche to Necessary
NFC Wireless Charging (NFC WLC) is gaining traction as a preferred standard for ultra-compact, battery-powered devices. Unlike Qi charging, NFC WLC supports:
- Smaller coil form factors (≤5 mm)
- Faster data communication (106 kbps)
- Integration into existing mobile devices
Renesas: Why NFC WLC Matters
With 75% of smartphones expected to support NFC by 2028, this creates a broad charging ecosystem for:
- Smart rings
- Hearing aids
- Styluses
- Medical wearables
Renesas introduced the PTX130W and PTX30W, SoCs designed for NFC WLC with:
- Low EMI
- Flexible antenna placement
- High integration for minimal BOM cost
NPI supports clients working with these technologies by helping vet antenna placement options, conduct ROM sourcing analysis, and ensure early visibility on component lead times and obsolescence risk.
Talk to NPI about component sourcing and vendor risk assessment for NFC charging-enabled builds.
Compliance in a Crowded Spectrum: EMI and SAR Are Non-Negotiable
With the proliferation of wireless devices, ensuring EMI containment and Specific Absorption Rate (SAR) safety is now critical to design success.
NuCurrent outlined several practical tips:
- Use continuous ground planes to contain EMI fields
- Balance high Q-factor for power efficiency with damping strategies for stable NFC communication
- Use shielded coil structures to reduce peak SAR in body-adjacent applications
For those preparing for FCC, CE, or international regulatory testing, these tactics can mean the difference between one-pass clearance and multiple failed revisions.
Get a pre-compliance EMI and SAR review through NPI’s turnkey DFX support.
Use Case Spotlight: Where Near-Field Wireless Power Transfer Shines
The promise of near-field wireless power transfer isn’t just theoretical; it’s actively reshaping commercial products across sectors. Here are three real-world scenarios where NFWPT is solving real engineering constraints:
1. Medical Implants & Wearables
In devices like cochlear implants, neurostimulators, and smart glucose monitors, battery replacement is often invasive or impractical. NFWPT allows for:
- Smaller device footprints
- Longer lifespans with no ports or connectors
- Compliance with biocompatibility and thermal safety standards
This also enables sealed enclosures that reduce infection risk and enhance water/dust resistance.
2. Smart Rings and Miniature Accessories
Smart rings and fitness trackers continue to shrink, and many now ship without physical charging ports. Designers turn to NFC WLC to:
- Eliminate port-related failure points
- Reduce BOM complexity
- Allow for behind-glass and embedded coil charging solutions
3. Retail and Industrial IoT
Contactless power has emerged in point-of-sale systems, batteryless peripherals, and smart retail shelves. Using near-field communication, these devices can transmit both power and data, enabling:
- Low-maintenance digital signage
- Disposable medical or industrial sensors
- Rapid swap-and-go hardware designs
For Startups: Key Design Considerations in Wireless Power
Startups moving into the wireless power space, especially in healthtech, wearables, and consumer IoT, face unique design constraints that legacy OEMs may not.
Here’s what early-stage product teams should prioritize:
- Simulation-First Development: Tools like NuCurrent’s GENA or ANSYS HFSS help avoid costly PCB respins and speed up FCC/CE readiness.
- Multi-disciplinary Collaboration: Your electrical, mechanical, and thermal engineers must be tightly integrated. Wireless power systems are interdependent by design.
- Certification Path Planning: Wireless power systems must pass EMI and SAR requirements early in the dev cycle. Don’t wait for EVT (engineering validation testing) to think about compliance.
- User-Centric Coil Placement: In wearables, charge alignment and spatial tolerances are product-defining. Choose a standard (Qi, NFC, custom) early—and design your ID/mechanics around it.
LEO Satellite Comms: When Every Gram and Dollar Counts
The IMS LEO panel featured leaders from NASA JPL, Analog Devices, Axiro Semiconductor, and others. The conversation focused on how high-frequency designs are evolving to support low-cost, high-performance satellite networks. Emerging priorities for RF product teams include:
- Spectral efficiency and low-power silicon
- Phased array antennas replacing legacy parabolics
- Affordable RF modules that balance cost and reliability
While the technical implementation happens within R&D teams, NPI supports LEO programs by helping program managers and operations leads:
- Conduct supply chain ROM evaluations for component selection
- Build vendor roadmaps for qualification and lifecycle visibility
- Coordinate logistics and production readiness for phased prototypes
As Naveen Yanduru (CEO, Axiro Semiconductor) pointed out, “Low-cost, scalable RFICs are the backbone of future LEO systems.” But only if they can meet mission lifespan and compliance targets.
Partner with NPI for material sourcing and BOM management on space and SATCOM initiatives.
The Takeaway: Faster Cycles. Smaller Hardware. Smarter Integration.
From near-field wireless power transfer to LEO satellite systems, RF-enabled product teams are facing faster cycles, greater complexity, and stricter compliance gates. To succeed, they need:
- Early-stage sourcing partners with RF application knowledge
- ROM pricing and supply chain visibility before designs are locked
- Efficient program management that de-risks production and compliance timelines
NPI Services enables hardware teams to accelerate from lab to launch by delivering:
- BOM risk analysis and sourcing
- Vendor and component vetting
- Fast-turn PCBA and test builds
- Project management across the prototype and pilot phases
Whether you’re developing a medical wearable, wireless charging accessory, satellite, or ground module, we help you stay ahead of schedule and your competition.