A client need a 5.8 GHZ UNII-2C ขยายวงดนตรี 1 ตัวรับส่งสัญญาณ Watt DFS TPC, here is his demand details.
We need boards with the following specifications:
อินเตอร์เฟซ: อีเทอร์เน็ต (RJ-45) Throughput Ethernet: > 10Mbit/s @ 300 เมตร (เดอะ) แหล่งจ่ายไฟ: 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) สิ่งแวดล้อม: -20,+85 deg.C, ruggedized.
Based on your specifications, here’s a structured solution with recommended components and design considerations:
โซลูชั่นที่แนะนำ
Module: 5.8G Mesh networking video data transceiver Vcan2117
*(Industry-standard 5.8 GHz Wi-Fi SoC with DFS/TPC support)*
Key Specifications Compliance
| พารามิเตอร์ | Demand | วิธีการแก้ Vcan2117 |
| อินเตอร์เฟซ | อีเทอร์เน็ต (RJ-45) | 2x Ethernet (RJ-45), 2XTTL, 2XUSB |
| ปริมาณงาน | >10 Mbps @ 300m (เดอะ) | Peak 96Mbps, Max 10km (เดอะ) , Need height difference between the TX and RX |
| พาวเวอร์ซัพพลาย | 12วี ดีซี | 6-24วี ดีซี |
| Power Usage | เท็กซัส: <100mA (1.2W), รับ: <50mA (0.6W) | Average power consumption 6W |
| Frequency Band | 5.8 GHz, UNII-2(C) Extended | 802.11AN,5.180G~5.825GHz 802.11AN，5.180G~5.825Ghz |
| Options | DFS, TPC | สนับสนุน |
| Max RF Power | +30 dBm (1W) | +30dBm (1W) |
| Direction | Bi-directional (DFS/TPC) | Support Bi-directional video data transmission. |
| Regulations | FCC/ETSI | Not applied |
Design Architecture
- RF Section:
- SoC: QCA9880 (handles baseband, DFS/TPC, MAC).
- PA: Skyworks SKY65111 (+30 dBm output, 32 กำไรจากเดซิเบล).
- LNA/Switch: Qorvo RFFM6552 (integrated LNA/switch for RX/TX switching).
- เสาอากาศ: Dual external U.FL connectors for high-gain directional antennas.
- Power Management:
- ป้อนข้อมูล: 12V DC →Buck Converter (TI TPS54332) → 3.3V/1.8V for SoC.
- PA Power: Direct 12V supply (SKY65111 efficiency: >40% ที่ +30 dBm).
- Ethernet Interface:
- PHY: Microchip LAN8720A (RMII interface to QCA9880).
- RJ-45: With magnetics (เช่น, Hanrun HR911105A).
- Thermal/Ruggedization:
- Heatsink: On PA (เช่น, 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.
- การรับรอง: QCA9880 modules (เช่น, Wallys DR9880) are pre-certified for FCC/ETSI.
- ขนาด: Compact layout fits within 70×90 mm (example: Wallys DR9880 reference design).
Recommended Suppliers
- SoC Module: Wallys DR9880 (QCA9880-based, 48×36 mm).
- PA/LNA: Skyworks SKY65111 (มูสเตอร์ #: 863-SKY65111-11).
- Ethernet PHY: Microchip LAN8720A (DigiKey #: 1189-4395-5-ND).
- Antennas: Taoglas MA931 (15 dBi, 5.8 GHz).
Validation Steps
- RF Testing: Verify EIRP with +30 dBm PA (ensure DFS avoids radar channels).
- Thermal Test: Run at +85°C with TX duty cycle >90% (PA heatsink critical).
- 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.
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