What the Return Loss of a Cavity Filter? Keenlion Confirms ≥15 dB for New 975-1005Hz Cavity Filter

When engineers ask “What the return loss of a cavity filter?”, they are really asking for the guarantee that precious signal power is not reflected back to the source. Keenlion’s latest 975-1005 Hz Cavity Filter answers that question with a decisive ≥15 dB return loss across the entire passband, a specification now validated by rigorous vector-network-analyzer tests conducted in our ISO-9001-certified factory.

Measurement Results

During the qualification campaign, 50 production units of the 975-1005 Hz Cavity Filter were swept from 950 Hz to 1050 Hz. Every Cavity Filter exhibited return-loss values between 15.2 dB and 19.8 dB, comfortably surpassing the ≥15 dB design target. The consistent results confirm that the Cavity Filter’s precisely machined cavity and silver-plated resonator maintain excellent impedance matching even under wide temperature swings (-40 °C to +85 °C).

Design Excellence

The ≥15 dB return loss of this Cavity Filter is achieved through a patented stepped-impedance coupling structure and high-Q ceramic tuning elements. These features reduce internal reflections and keep the Cavity Filter stable under vibration and humidity, making it ideal for LF seismic monitoring and submarine communication systems.

Factory Advantage

Keenlion’s twenty years of cavity filter experience allow us to guarantee ≥15 dB return loss while offering rapid customization, free samples dispatched within 48 hours, and end-to-end support from simulation to field deployment. Our vertically integrated CNC process also ensures competitive pricing and lead times as short as seven days.

For anyone still wondering “What the return loss of a cavity filter?”, Keenlion’s new 975-1005 Hz Cavity Filter delivers a confident ≥15 dB. Contact our RF engineering team today to request data sheets, samples, or custom variants of this high-performance Cavity Filter.