A high-performance lightning surge protection module engineered for GPS antenna systems in 5G network stations — featuring an aluminum enclosure, 2-layer PCB, and ±20 kA lightning immunity.
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The GPS Surge Protection Module is a compact, metal-enclosed device designed to shield GPS antenna feeds in 5G base station environments from destructive lightning transients while maintaining full signal integrity.
Housed in a durable aluminum enclosure (67.6 × 50 × 31 mm), the module features a 2-layer FR-4 TG160 PCB with gold-plated surface finish. The unit connects seamlessly between the GPS antenna and station equipment via N female and SMA female connectors.
The module operates across a wideband frequency range of 1,000 MHz to 2,000 MHz with a characteristic impedance of 50 Ω, insertion loss below 1 dB, and a VSWR ≤ 1.2, ensuring minimal signal degradation during normal operation.
A dedicated 5V SMA female port receives power from the Card Alarm board to supply the GPS antenna, while the AC-coupled SMA female output feeds the clean GPS signal to downstream receivers.
Withstands surge currents of ±3 kA (10/350 µs) and ±20 kA (8/20 µs) at the GPS antenna power input, ensuring uninterrupted station operation after direct or induced lightning strikes.
Covers the full GPS L1/L2 frequency band from 1,000 MHz to 2,000 MHz with insertion loss under 1 dB, preserving signal quality for precise satellite positioning.
Accepts 5V±1V via SMA female input port to supply the GPS antenna, with AC-coupled signal output — enabling a clean separation between power and RF signal paths.
Compact metal enclosure with M6 grounding screw provides excellent EMI shielding and mechanical protection, fully compliant with industrial telecom deployment requirements.
Uses N female for the GPS antenna interface and SMA female for signal output and power input — ensuring compatibility with standard telecom cabling infrastructure.
Operates reliably from -10°C to +55°C and withstands 5%–85% relative humidity, making it suitable for outdoor and harsh indoor 5G station environments.
| Parameter | Specification |
|---|---|
| Enclosure Material | Aluminum metal |
| Grounding Point | Enclosure body, M6 screw with spring washer included |
| Enclosure Dimensions (L×W×H) | 67.6 mm × 50 mm × 31 mm |
| PCB Material | FR-4 TG160 |
| PCB Layers | 2 layers |
| PCB Dimensions (L×W) | 62.7 mm × 40 mm |
| PCB Thickness | 1.57 mm (±0.1 mm) |
| Surface Finish | Gold-plated, white silkscreen, green solder mask |
| Parameter | Specification |
|---|---|
| Operating Frequency | 1,000 MHz – 2,000 MHz |
| Impedance | 50 Ω |
| Insertion Loss | Return loss: ≤ 1 dB |
| VSWR / Return Loss | VSWR ≤ 1.2 or Return loss ≤ -26.4 dB |
| Standard Connectors | Port 1: SMA female, Port 2: SMA female |
| GPS Signal Output Port | SMA female, AC coupled |
| 5V Power Input Port | SMA female, receives 5V±1V |
| GPS Antenna Interface | N female — provides power to and receives signal from GPS antenna |
| Test Condition | Performance |
|---|---|
| Surge Test 1 (GPS Antenna Power Port) | ±3 kA, 10/350 µs — module operates normally |
| Surge Test 2 (GPS Antenna Power Port) | ±20 kA, 8/20 µs — module operates normally |
| Lightning Standard | IEC 61312 / ITU-T K series (telecom surge) |
| Parameter | Specification |
|---|---|
| Operating Temperature | -10°C to +55°C |
| Relative Humidity | 5% to 85% |
| Warranty | ≥ 6 months from date of acceptance |
| Year of Manufacture | 2025 or later |