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Telcona Introduces LinkCom LCMF7060: Ultra-Compact EMI Filters for WiFi 7
The rapid deployment of WiFi 7 (802.11be) access points brings unprecedented engineering challenges to RF design. With Multi-Link Operation (MLO) enabling simultaneous transmission across 2.4 GHz, 5 GHz, and 6 GHz bands, electromagnetic interference (EMI) management has become mission-critical. Telcona is pleased to introduce the LinkCom LCMF7060 Series, a family of ultra-compact common mode filters specifically engineered to address the complex EMI requirements of tri-band wireless infrastructure.
The WiFi 7 EMI Challenge
WiFi 7 represents more than just another incremental upgrade—it's the first standard to implement true Multi-Link Operation, transmitting data simultaneously across all three frequency bands. This creates a unique EMI challenge: the 5 GHz band (5150-5850 MHz) sits immediately adjacent to the new 6 GHz band (5925-7125 MHz), with only a 75 MHz guard band separating them. When high-power RF amplifiers operate across these closely-spaced bands simultaneously, power supply noise, harmonic interference, and cross-coupling between RF chains can quickly compromise system performance and regulatory compliance.
Modern WiFi 7 access points must meet stringent FCC and ETSI emission limits across all three bands while delivering higher output power to support increased data rates. Common mode EMI filtering on DC power lines becomes essential—not optional—to prevent power supply noise from coupling into sensitive RF circuits and violating emission masks in the newly opened 6 GHz spectrum.
LCMF7060 Series: Purpose-Built for High-Density RF
The LinkCom LCMF7060 Series delivers the impedance range, current capacity, and compact footprint that WiFi 7 system architects need. Measuring just 7.0 × 6.0 × 3.8mm, these surface-mount common mode filters fit easily into space-constrained access point designs while providing robust EMI suppression across a broad frequency spectrum.
Key Technical Specifications
The LCMF7060 Series offers ten impedance variants, enabling designers to target specific interference frequencies:
For Power Supply Filtering:
- LCMF7060P1-301-2P: 300Ω typical @ 100MHz, 5A rated current
- Ideal for main RF power amplifier supply filtering
- Broadband suppression from 100 MHz through multi-GHz harmonics
- 10mΩ DC resistance minimizes voltage drop
- LCMF7060P1-501-2P: 350Ω typical @ 100MHz, 5A rated current
- Optimized for suppressing 2.4 GHz harmonics that land in 5-6 GHz bands
- Critical for preventing 2nd and 3rd harmonic interference
- Maintains low power dissipation at 10mΩ DCR
For PoE Integration:
- LCMF7060P1-101-2P: 140Ω typical @ 100MHz, 9A rated current
- High current rating supports PoE++ (IEEE 802.3bt) up to 90W
- Protects Gigabit and Multi-Gigabit Ethernet data integrity
- Enables single-cable power + data for WiFi 7 APs
For Ultra-Low Noise Applications:
- LCMF7060P1-601-2P: 700Ω typical @ 100MHz, 4A rated current
- Superior high-frequency attenuation for sensitive clock and PLL circuits
- 15mΩ DCR for analog power rail filtering
- Critical for maintaining phase noise performance in multi-band systems
All LCMF7060 variants operate reliably from -40°C to +85°C, suitable for both indoor enterprise deployments and outdoor industrial installations. With 80VDC voltage rating and >10MΩ insulation resistance, these filters meet the demanding requirements of modern powered networking equipment.
Multi-Point Filtering Strategy
Unlike legacy single-band WiFi designs, WiFi 7's simultaneous tri-band operation requires EMI filtering at multiple strategic locations within the access point architecture. The LCMF7060 Series' impedance options enable system designers to implement a comprehensive filtering strategy:
RF Power Amplifier Rails: LCMF7060P1-301-2P provides broadband common mode suppression, preventing power supply noise from modulating RF output and creating spectral splatter across adjacent bands.
2.4 GHz Radio Supply: LCMF7060P1-501-2P targets harmonic suppression, as 2.4 GHz harmonics (4.8 GHz, 7.2 GHz) land directly in the 5 GHz and 6 GHz operating bands.
PoE Data/Power Integration: LCMF7060P1-101-2P's 9A rating handles high-power PoE++ delivery while protecting Ethernet signaling from conducted emissions, enabling reliable Multi-Gigabit backhaul performance.
Sensitive Analog Circuits: LCMF7060P1-601-2P delivers ultra-low noise for voltage-controlled oscillators (VCOs), phase-locked loops (PLLs), and other frequency-critical subsystems.
Applications Beyond WiFi 7
While optimized for WiFi 7 infrastructure, the LCMF7060 Series addresses EMI challenges across multiple high-frequency wireless applications:
- WiFi 6E Tri-Band Access Points – Upgrading existing designs for improved EMI performance
- 5G Small Cell Base Stations – Compact filtering for distributed antenna systems
- Industrial IoT Gateways – Reliable operation in electrically noisy environments
- Automotive Connectivity Modules – Meeting stringent automotive EMC requirements
- High-Speed Networking Equipment – 10GbE switches with integrated PoE++
The series' compact 7×6mm footprint and surface-mount design simplify high-volume manufacturing while maintaining excellent RF performance through minimized lead inductance.
Availability and Technical Support
The LinkCom LCMF7060 Series is available now through Telcona AG. Our applications engineering team provides comprehensive technical support including impedance selection guidance, insertion loss modeling, and PCB layout recommendations optimized for your specific system architecture.
👉 For more information on applications, specifications, or required quantities, please contact Telcona – your trusted partner for high-performance electronic components.
