The N Female to SMA Male Cable Assembly built with LMR-200 coaxial cable is the ideal solution for connecting professional-grade antenna systems and infrastructure to standard radio modules and devices. This assembly is specifically designed to provide superior performance and lower attenuation than typical thin cables (like RG58 or RG316), making it essential for maximizing signal integrity in demanding cellular, Wi-Fi, and IoT applications.
This adapter cable bridges the gap between the robust, weather-resistant N-Type interface and the common, compact SMA interface, ensuring a secure and high-quality RF link.
Key Features and Technical Components
1. High-Performance LMR-200 Coaxial Cable
Low Attenuation: The LMR-200 cable is a premium, low-loss coaxial cable.1 Its construction, which typically includes a solid center conductor and multiple layers of shielding, results in significantly lower signal loss across its length compared to thinner, more flexible cables like RG58 or RG174. This low loss is crucial, particularly at higher frequencies (e.g., 2.4 GHz, 5 GHz, and high-band LTE).
Broadband Application: Excellent performance across a broad spectrum, reliably handling frequencies from DC up through 6 GHz, covering all major wireless technologies including GPS, Cellular (3G/4G/5G), Wi-Fi, and ISM band devices.2
Superior Shielding: The enhanced shielding of the LMR-200 cable offers excellent isolation against external electromagnetic interference (EMI), leading to a cleaner Signal-to-Noise Ratio (SNR) for your radio receiver.
2. Reliable Connector Interfaces
N Female Connector: The N-Type connector is a medium-sized, highly durable, threaded connector widely used in professional and outdoor RF applications, high-power systems, and test equipment. The Female configuration is designed for secure, weatherproof connection to a male antenna port or device.
SMA Male Connector: The SMA (Sub-Miniature A) Male connector is the industry standard for smaller RF modules, cellular modems, GPS receivers, and portable communication devices. Its screw-on mechanism ensures a reliable, threaded connection.
Impedance Match: The entire cable assembly is precisely terminated and tested to maintain a strict 50Ω impedance, minimizing signal reflections (VSWR) and guaranteeing maximum power transfer efficiency.
Versatile Application Scenarios (Use Cases)
The combination of the rugged N-Type connector and the low-loss LMR-200 cable makes this assembly invaluable in scenarios where signal quality over distance is paramount.
1. Fixed Wireless Access (FWA) and Cellular
• Remote Modem Connection: Used to connect a large, outdoor, high-gain N-Female cellular antenna (for 4G/5G LTE) to an indoor modem or router that utilizes an SMA-Maleport. The LMR-200 cable ensures minimal signal degradation over the necessary cable run (typically 5 to 10 meters).
• Repeater Systems: Interconnecting components of signal boosters or repeaters where minimizing loss is critical for system gain calculation.
2. Industrial IoT and Telemetry
• Gateway Installation: Facilitates the link between a robust, externally mounted antenna and an internal IoT gateway, ensuring the long-haul telemetry signals (e.g., LoRa, cellular) are transmitted efficiently.
3. Wi-Fi and Wireless Backhaul
• External Wi-Fi Links: Connecting an N-Type external access point or high-gain dish antenna to an indoor wireless controller or router, extending the effective range and stability of the network.
4. Test and Measurement
• An ideal, low-loss adapter cable for laboratory use, reliably linking test equipment (often N-Type) to DUTs (Devices Under Test) with SMA ports, preserving the accuracy of measurements.
