Bandpass Filter – 803727

Surface Mount Bandpass FilterBandpass 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 4000 MHz. The bandwidth for this particular bandpass filter is 700 MHz with having rejection points located at 3500 MHz and 4800 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 2.5 dB and maintains a variation of less than 1 dB as well. The bandwidth is rather large in respect to its center frequency being around 17.5%.

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:

<2.5 dBa at Center Frequency 4000 MHz

<1.0 dBc Passband Variation 3650 – 4350 MHz

Return Loss:

>14 dB 3650 to 4350 MHz


>70 dBc DC – 1000 MHz

>40 dBc 1000 – 3400 MHz

>15 dBc 3400 – 3500 MHz

>40 dBc 4800 – 10000 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