Bandpass Filter – 803702

Bandpass Filter

Bandpass Filters are an extremely common filter found in many RF systems. Bandpass filters have become a rather powerful tool when it comes to RF Communications because of their ability to allow a range of frequencies as well as provide isolation on either side of the band of interest. Bandpass filters can also be made with varying topologies and each topology can provide different responses with respective strengths and weaknesses.

This bandpass filter maintains its performance around the center frequency 7875 MHz. The bandwidth for this particular bandpass filter is 1500 MHz with having rejection points located at 6100 MHz and 10167 MHz. The performance of the filter at center frequency and across the passband is exceptional when it comes to insertion loss coming in less than 2dB and maintains a variation of less than 2 dB as well. The bandwidth is rather large in respect to its center frequency being around 20%. The rejection points are also very stable in maintaining their greater than 60 dB performance at the aforementioned locations.

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: 1.20 x 0.40 x 0.20 Inches

Configuration: SMT

Insertion Loss:

<2.0 dBa at Center Frequency 7875 MHz

<2.0 dBc Passband Variation 7125 – 8625 MHz

Return Loss:

>14 dB 7125 to 8625 MHz


>60 dBc 6100 MHz

>60 dBc 10167 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.

Outline Drawing.pdf
Test Data CH1.pdf