Description

A 4:4 combiner, also known as a 4x4 hybrid combiner, is a specialized RF device used to combine four input signals and distribute them evenly across four output ports. It's commonly used in neutral host Distributed Antenna Systems (DAS), where multiple operators or technologies share the same infrastructure. Here are its key characteristics: - Frequency Range: Typically operates from 698 MHz to 2700 MHz, covering 2G, 3G, 4G, and LTE bands. - Power Handling: Can handle up to 300 watts per port, making it suitable for high-power applications. - Insertion Loss: Around 6–7 dB, due to the signal being split across multiple paths. - Isolation: High isolation between ports, often ≥ 18–23 dB, to prevent interference. - VSWR: Low VSWR (e.g., <1.3:1), ensuring efficient signal transfer. - Impedance: Standard 50 ohms, compatible with most RF systems. - Connectors: Usually equipped with N-type or DIN connectors for robust RF connections. - Build: Rugged aluminum housing, often IP55 or IP65 rated for indoor or outdoor use.