Diplexer – 803909

Multiplexer – Diplexer

This RF Diplexer utilizes two ports that allows two different types of filters into one package. The most common topology we use, typically involves a High Pass and Lowpass combination. This combination can be altered based on customer specifications.

This particular Diplexer provides a lowpass passband between 0 and 720 MHz with low Insertion Loss and consistent Return Loss. The lowpass also contains a solid 50 dB of isolation from the high pass and carries out this isolation through 8.5 GHz. The High pass maintains low loss through the passband of 930 to 8570 MHz while keeping a consistent VSWR through the same passband. The opposing isolation from the lowpass is also held to 50 dB. The wide range of diplexers that we have been able to achieve here at Bree Engineering is shown with the many Multiplexers that we do, this Part Number reflects that with its low diplexed cut off frequencies.

As with all of our Filters here at Bree Engineering the design is custom and tailored to the specifications of our clients. We are always striving to do our best to design, build and tune filters of any type.

Please see the attached Filter Test Data for the performance of the filter.

Package Size: 1.00 x 1.00 x 0.40 Inches

Configuration: SMA-F Connectors

Insertion Loss:

Channel 1: <1.00 dBa 0 MHz – 720 MHz

Channel 2: <1.00 dBa 930 MHz – 8570 MHz

Return Loss:

Channel 1: >17 dB 0 MHz – 720 MHz

Channel 2: >17 dB 930 MHz – 8570 MHz


Channel 1: >50 dBc 930 MHz – 8570 MHz

Channel 2: >50 dBc 0 MHz – 720 MHz

Please feel free to reach out to us at Bree Engineering with any questions or comments regarding any of our custom filters and we will be happy to answer them.