RF Duplexer 890-915MHz/935-960MHz

Cavity Duplexer: Core device for High-Performance RF Front-End

The cavity duplexer is a key passive device in wireless communication systems, used to separate or combine RF signals of different frequency bands, enabling isolation between transmit and receive channels and efficient signal transmission. Its primary function is to ensure that transmitted and received signals do not interfere with each other while sharing the same antenna, thereby enhancing the overall performance and reliability of the communication system. The cavity duplexer offers excellent performance in terms of low intermodulation (PIM), low insertion loss, and high isolation, making it suitable for wireless network optimization, in-building distribution systems (IBS), base stations (BTS), distributed antenna systems (DAS), and antenna feeder systems (AFS).

The duplexer features the following characteristics:

1. High Isolation: Achieves strong isolation between transmit and receive channels through precision cavity design, effectively suppressing signal crosstalk.

2. Low Insertion Loss: Minimizes energy loss during signal transmission through optimized internal structure and material selection, improving system efficiency.

3. Excellent Frequency Selectivity: Utilizes high-quality resonant cavities to deliver steep out-of-band rejection, ensuring signal purity.

4. High Power Handling Capacity: The cavity structure offers effective thermal management, supporting high-power signal processing and making it ideal for high-power applications such as base stations.

5. Robust and Reliable Construction: Metal cavity housing provides strong interference resistance, durability in harsh environments, and a long service life.

6. Low Intermodulation Characteristics: Employs premium materials and precision manufacturing processes to significantly reduce intermodulation distortion and ensure signal quality.

7. Versatile for Indoor and Outdoor Use: The design accommodates both indoor and outdoor complex environments, featuring good temperature stability and protective performance.

Application Scenarios:

· Wireless Communication Base Stations: Used in systems such as cellular base stations and microwave communications to separate transmit and receive signals.

· Satellite Communication Equipment: Ensures efficient isolation of uplink and downlink signals in satellite ground stations and vehicle-mounted satellite terminals.

· Radar Systems: Enables switching and protection of transmit and receive channels in military and civilian radar equipment.

· Aerospace Electronics: Communication systems on aircraft and spacecraft, which demand high reliability and strong anti-interference capabilities.

· Test Instruments: Used in RF test equipment for signal separation and frequency selection.

· In-Building Distribution Systems (IBS & DAS): Enhances signal quality and stability in indoor wireless coverage scenarios such as shopping malls, subways, and office buildings.

· Outdoor Communication Equipment: Suitable for base stations, repeaters, and other devices exposed to natural environments, featuring resistance to rain, wind, and high temperatures.