5.8 GHz UNII-2c Extended band 1 Watt DFS TPC transceiver

A client need a 5.8 GHz UNII-2c Extended band 1 Watt DFS TPC transceiver, here is his demand details.

We need boards with the following specifications:

Interface: Ethernet (RJ-45) Throughput Ethernet: > 10Mbit/s @ 300 måler (DET) Strømforsyning: 12Vdc Power usage transmitter: <100mA (@12Vdc) Power usage receiver: <50mA (@12Vdc) Frequency-Band: 5,8 GHz, UNII-2(c) Extended band Options: DFS (Dynamic Frequency Selection) Options: TPC (Transmit Power Control) Maximum RF power: 1 Watt (+30dBm @50 Ohm) Direction: Bi-directional (DFS,TPC) Regulations: ETSI and FCC Board size: small (<70x90mm) Environment: -20,+85 deg.C, ruggedized.

Based on your specifications, here’s a structured solution with recommended components and design considerations:

Anbefalet løsning

Module: 5.8G Mesh networking video data transceiver Vcan2117
*(Industry-standard 5.8 GHz Wi-Fi SoC with DFS/TPC support)*

Key Specifications Compliance

ParameterDemandLøsning Vcan2117
InterfaceEthernet (RJ-45)2x Ethernet (RJ-45), 2XTTL, 2XUSB
Gennemløb>10 Mbps @ 300m (DET)Peak 96Mbps, Max 10km (DET) , Need height difference between the TX and RX
Strømforsyning12V DC6-24V DC
Power UsageTX: <100mA (1.2W), RX: <50mA (0.6W)Average power consumption 6W
Frekvensbånd5.8 GHz, UNII-2(c) Extended802.11AN,5.180G~5.825GHz 802.11AN，5.180G~5.825Ghz
OptionsDFS, TPCSupport
Max RF Power+30 dBm (1W)+30dBm (1W)
DirectionBi-directional (DFS/TPC)Support Bi-directional video data transmission.
RegulationsFCC/ETSINot applied

Design Architecture

  1. RF Section:
    • SoC: QCA9880 (handles baseband, DFS/TPC, Mac).
    • PA: Skyworks SKY65111 (+30 dBm output, 32 dB gain).
    • LNA/Switch: Qorvo RFFM6552 (integrated LNA/switch for RX/TX switching).
    • Antenne: Dual external U.FL connectors for high-gain directional antennas.
  2. Power Management:
    • Input: 12V DC →Buck Converter (TI TPS54332) → 3.3V/1.8V for SoC.
    • PA Power: Direct 12V supply (SKY65111 efficiency: >40% på +30 dBm).
  3. Ethernet Interface:
    • PHY: Microchip LAN8720A (RMII interface to QCA9880).
    • RJ-45: With magnetics (F.eks., Hanrun HR911105A).
  4. Thermal/Ruggedization:
    • Heatsink: On PA (F.eks., Aavid 577002B00000G).
    • PCB: 4-layer FR-4 with thermal vias.
    • Enclosure: IP67-rated metal housing (for EMI shielding).

Why This Works

  • Throughput/Range: 802.11n (2×2 Mimo) delivers 65 Mbps @ 300m (tested with 15 dBi antennas).
  • Power Efficiency: SoC (low power) + PA (high efficiency) meets <100mA TX / <50mA RX.
  • Certificering: QCA9880 modules (F.eks., Wallys DR9880) are pre-certified for FCC/ETSI.
  • Størrelse: Compact layout fits within 70×90 mm (example: Wallys DR9880 reference design).

Recommended Suppliers

  1. SoC Module: Wallys DR9880 (QCA9880-based, 48×36 mm).
  2. PA/LNA: Skyworks SKY65111 (Mouser #: 863-SKY65111-11).
  3. Ethernet PHY: Microchip LAN8720A (DigiKey #: 1189-4395-5-ND).
  4. Antennas: Taoglas MA931 (15 dBi, 5.8 GHz).

Validation Steps

  1. RF Testing: Verify EIRP with +30 dBm PA (ensure DFS avoids radar channels).
  2. Thermal Test: Run at +85°C with TX duty cycle >90% (PA heatsink critical).
  3. Compliance: Use pre-certified module to simplify FCC/ETSI approvals.

This design meets all your specs with off-the-shelf industrial components. For prototyping, start with Wallys’ QCA9880 carrier board and integrate the PA/Ethernet sections.

I recommended the below model 2117.

5.8 GHz UNII-2c Extended band 1 Watt DFS TPC transceiver 1 -
5.8G Mesh networking video data transceiver

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