Cavity Multiplexers

Product Features

• Low Insertion Loss: Cavity resonators, with their high Q-factor characteristics, ensure extremely low insertion loss within the passband of each channel, maximizing system efficiency.
• High Isolation: Provides excellent isolation between channels, effectively preventing mutual interference and crosstalk between different frequency channels.
• Steep Out-of-Band Rejection: Possesses very good out-of-band rejection capabilities, effectively filtering out unwanted frequency components and ensuring signal purity.
• High Power Handling: The robust metallic cavity structure boasts excellent heat dissipation capabilities and robustness, enabling it to withstand high RF power, suitable for high-power transmit applications.
• Good Frequency Stability: The choice of cavity dimensions and materials ensures frequency stability over a wide temperature range.
• Excellent In-Band Flatness: Maintains good flatness of the signal response within the passband of each channel, ensuring distortion-free signal transmission.
• High Reliability: The rugged and durable structural design ensures long-term stable and reliable operation even in harsh environments.
• Highly Customizable: Can be flexibly designed and customized according to specific frequency combinations, bandwidths, isolation requirements, power handling capacities, and connector types.
• Compact and Highly Integrated: Integrates multiple filter functions into a single unit, saving space and simplifying system design.

Applications

• Cellular Base Stations (4G/5G): Serves as a critical component in the RF front-end for combining multiple transmit signals from different frequency bands onto a single antenna, or for separating multi-band signals received by an antenna into different receivers, thereby enabling antenna sharing.
• Satellite Communication Systems: In ground stations and on-board transponders, used for combining or separating multiple uplink/downlink frequency channels.
• Radar Systems: In multi-band radar or co-located radar systems, used for combining or separating signals of different frequencies.
• Broadcast & TV Transmitters: Used for combining RF signals of multiple television or radio broadcast programs onto a single transmit antenna.
• Microwave Point-to-Point Communication: In multi-channel microwave backhaul links, used for simultaneous transmission and reception of signals across multiple frequency bands.
• Electronic Warfare and Reconnaissance: In broadband multi-channel receivers and transmitters, used for signal frequency management and separation.
• Test & Measurement Equipment: As high-precision frequency combining/splitting devices in scenarios requiring simultaneous testing or processing of multiple RF frequency channels.
• Aerospace & Defense: Applied in airborne and military communication/radar systems where stringent requirements for size, weight, performance, and environmental adaptability are essential, enabling shared antennas and equipment.