Custom RF Filters 0.1 Mhz to 40 Ghz

The passive components available in the Bree Engineering custom product lines include a broad range of both performance characteristics and unique applications. Filters cover the 0.1 Mhz to 40 Ghz range in Lowpass, Highpass, Bandpass, Bandstop and Multiplexing. 1% to multi-octave 3dB bandwiths are available. These RF filters can be configured in a number of formats to realize very simple to highly complex filter schemes. While Bree Engineering specializes in surface mount products these same designs can be packaged in more traditional pin outs and connectorized versions. Bree Engineering is capable of providing distributed element type RF filters, comblines and interdigitals.

Bree Engineering can efficiently design and produce drop-in replacements providing a competitive alternative source. contact our sales team for details.
Our products are available in any Configuration, contact our sales team for details.

 

 

THE FOLLOWING ARE EXAMPLES OF PAST RF FILTER DESIGNS

Multiplexer - Diplexer - Strong Insertion Loss

 

Diplexer

802858
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.

CH1: 1427 – 1980 MHz
CH2: 2854 – 5940 MHz

Multiplexer - Diplexer - Good Insertion Loss - Extended Passband

 

Diplexer

803911
This 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.

CH1: 1000 – 5000 MHz
CH2: 6500 – 25500 MHz

Multiplexer - Triplexer - Type-n

 

Diplexer

803683
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.

CH1 663 – 915 MHz
CH2 3660 – 12810 MHz

Multiplexer - Diplexer - Good Insertion Loss

 

Diplexer

803450
This 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.

CH1 698 – 915 MHz
CH2 1396 – 6737 MHz

Multiplexer - Diplexer - Low Insertion Loss

 

Diplexer

803417
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.

CH1 1425 – 2200 MHz
CH2 2850 – 14000 MHz

Multiplexer - Diplexer - Extended Rejection

 

Diplexer

803909
This 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.

CH1 0 – 720 MHz
CH2 930 – 8750 MHz

Multiplexer - Diplexer - Good VSWR

Diplexer

802820

This Diplexer is an example of the two channel multiplexers that we are able to design and manufacture at Bree Engineering.

CH1: 698 – 915 MHz
CH2: 1396 – 6000 MHz
CH2(extended): 6000 – 14000 MHz

Multiplexer - Diplexer - Great Extended Rejection

 

Diplexer

803691
One of Bree Engineering’s two channel multiplexers, with female SMA connectors out. This particular Diplexer also works out to 25 GHz.

CH1: 3800 – 5950 MHz
CH2: 7600 – 18000 MHz
CH2(extended): 18000 – 25000 MHz

Multiplexer - Triplexer - Low Insertion Loss - Good VSWR

 

Triplexer

802070
One of Bree Engineering’s Triplexers, with female SMA connectors for the input and output. With this custom triplexer we at Bree Engineering were able to provide one of our customer with a varying passband ratio while still meeting their performance specifications. The variety that we are able to provide while multiplexing is entirely up to our customers, and we will happily work with anyone to find a solution that matches your needs.

CH1: 50 – 220 MHz
CH2: 1600 – 2200 MHz
CH3: 3500 – 6000 MHz

Multiplexer - Triplexer - Low Insertion Loss - High VSWR

 

Triplexer

802650
One of Bree Engineering Triplexers that allows us to provide 3 channels in one package for our customers. Compared to other triplexers that we have done, this once again demonstrates the variety that we are able to achieve. This particular design also demonstrates the flexibility we have with our customers when a custom filter is in need.

CH1: 0 – 2620 MHz
CH2: 5000 – 5240 MHz
CH3: 7500 – 7860 MHz

Multiplexer - Triplexer - High Power

Triplexer

802861

This triplexer is a common example of what we can achieve here at Bree Engineering, utilizing one package and three output ports

CH1: 0 – 400 MHz
CH2: 1200 – 2800 MHz
CH3: 3500 – 7800 MHz

Multiplexer - Triplexer - Type-N - High Power

 

Triplexer

803194
One of Bree Engineering’s Triplexers, with female SMA connectors out from channels 1, 2, and 3 along with a Type-N Female common input.

CH1: 700 – 960 MHz
CH2: 1710 – 2690 MHz
CH3: 4400 – 5600 MHz

Multiplexer - Triplexer - Good Performance

 

Triplexer

801480
One of Bree Engineering’s Triplexers, with female SMA connectors for the input and output. With this custom triplexer we at Bree Engineering were able to provide one of our customer with a varying passband ratio while still meeting their performance specifications.

CH1: 1710 – 1910 MHz
CH2: 3420 – 3820 MHz
CH3: 5130 – 5730 MHz

Mutiplexer - Triplexer - Close Cutoff's

 

Triplexer

803912
One of Bree Engineering’s Triplexers, with female SMA connectors for the input and output. With this custom triplexer we at Bree Engineering were able to provide one of our customer with a very narrow stopband to passband ratio while still meeting their performance specifications.

CH1: DC – 1620 MHz
CH2: 1680 – 2200 MHz
CH3: 2300 – 6000 MHz

Multiplexer - Diplexer - High Return Loss - Good Insertion Loss

Diplexer

802635

This Diplexer is an example of our two channel multiplexers that we are able to design and manufacture at Bree Engineering.

CH1: 824 – 915 MHz
CH2: 1648 – 6000 MHz
CH2(extended): 6000 – 12810 MHz

Bandpass Filter - High Frequency

 

Bandpass Filter

803702
One of Bree Engineering’s Bandpass Filters.

Passband: 7125 – 8625 MHz

Bandpass Filter - Low Insertion Loss

 

Bandpass Filter

803768
A standard custom bandpass RF filter made here at Bree Engineering. We target to match the specifications that our customers ask of us, and this tailored bandpass filter is no different. This particular filter comes in one of our standard surface mount packages, but this filter can be applied to other package types.

Passband: 2200 – 2400 MHz

Bandpass Filter - Low Passband Variation

 

Bandpass Filter

803671
A standard custom bandpass RF filter made here at Bree Engineering. We target to match the specifications that our customers ask of us, and this tailored bandpass filter is no different. This particular filter comes in one of our standard surface mount packages, but this filter can be applied to other package types.

Passband: 4400 – 5150 MHz

Bandpass Filter - Sample - Excellent Passband Variation

 

Bandpass Filter – Low Passband Variation – Low Insertion Loss

One of our Bandpass Filters targeted to have very low passband variation across 400 MHz bandwidth centered at 3600 MHz.

Passband: 3400 – 3800 MHz

Bandpass Filter - Very Low Insertion Loss

 

Bandpass Filter

803544
A standard bandpass filter made here at Bree Engineering. We target to match the specifications that our customers ask of us, and this tailored bandpass filter is no different.

Passband: 950 – 1450 MHz

Bandpass Filter - Low Percent Bandwidth

 

Bandpass Filter

One of our Bandpass Filters targeted to have a very narrow response, designed and built to work with Bree Part Number 803751

Passband: 2260 – 2300 MHz

Bandpass Filter - Low Percent Bandwidth - Good Return Loss

 

Bandpass Filter

803751
A standard bandpass filter made here at Bree Engineering. This particular filter was designed to work with Part Number 803750

Passband: 2200 – 2240 MHz

High Pass Filter - 2 - 18 GHz

High pass filter 2-18 GHz

803358
This filter suppresses signals below 1.65 GHz by more than 40 dB, and passes signals from 2.0 GHz to 18.0 GHz with less than 1.0 dB if insertion loss and typically more than 17 dB of return loss in the passband. This filter is available from stock.

Bandpass Filter - Low Percent Bandwidth - Good VSWR

 

Non-Reflective Filter

800003
With typical performance of a six-section filter this unique design utilizes internal circuitry to absorb all mismatch well into the extended passband.

Passband: 589.5 – 595.5 MHz

Bandpass Filter - Telemetry

2042.5 MHz Telemetry Bandpass Filter

803447
This filter passes 1900 MHz to 2185 MHz with 14.0 dB minimum return loss in the passband. The surface mount package size is 1.5 X 0.3 X 0.2 inches. (Other configurations are available.)

Passband: 1900 – 2185 MHz

High Power Lowpass Filter

 

High Power Lowpass Filter

800506
Bree Engineering’s 13 element elliptic low-pass filter. Its construction allows for handling 120 watts CW power.

Cutoff Frequency: 980 MHz

Mutiplexer - GPS Switched Filter - Diplexer

Multiplexed GPS Switched Filter

802998
These multi-channel switched filter banks cover from 100MHz up to 8 GHz and are now in production. We offer customizable multi-channel, TTL Controlled Switched Filter Banks that use a +5 volt DC bias and a 0V/+5V control logic (3.3vdc optional). Units are available 2 or more channels, and using any of the filters currently manufactured by Bree Engineering, with custom band breaks as required. Typical switching speed is 10 – 200 µsec. Rejection up to 70dBc.

CH1: 1217 – 1237 MHz
CH2: 1565 – 1585 MHz

Multiplexer - Diplexer - RF Filter with low insertion loss

Multiplexer

802857

Multiplexer 802857 refers to one of Bree Engineerings tailored Diplexers.

CH1: 698 – 980 MHz
CH2: 1396 – 3920 MHz

Bandpass Filter - Surface Mount

Data Link Filter

800019
A series of miniature filters includes a surface mount data link transmitter cleanup filter.

Passband: 2125.4 – 2175.4 MHz

Bandpass Filter - Good Insertion Loss - Good VSWR

 

Asymmetrical Filter Bank

800095 – 800097
This bank of three filters utilizes a non-symmetrical skirt selectivity response to minimize size and costs while maximizing specialized custom requirements.

800095: 950 – 1550 MHz
800096: 1450 – 2350 MHz
800097: 2250 – 3150 MHz

High Pass - High Power RF Filter

High pass – High Power Filter

803925
This High Pass RF Filter is set to operate with 200 Watt CW.

Cutoff Frequency: 500 MHz

High Pass High Power RF Filter - 200 Watt

 

High Pass – High Power Filter

803926
This High Pass RF Filter is set to operate with 200 Watt CW.

Cutoff Frequency: 1240 MHz

High Pass - High Power RF Filter type n

High pass – High Power Filter

803924
This High Pass RF Filter is set to operate with 350 Watt CW.

Cutoff Frequency: 2000 MHz

Lowpass High Power RF Filter - 200 Watt

 

Lowpass – High Power Filter

803921
This lowpass RF Filter is set to operate with 200 Watt CW.

Cutoff Frequency: 220 MHz

Bandpass Filter - Good Insertion Loss at Center Frequency

Low Profile Surface Mount LC Filter

800819
Bree Engineering’s 5 section high performance lumped element filter designed into a low profile SMT package.

Passband: 4400 – 5000 MHz

 

Multiplexed High Power Band Splitter

800334
A series of high power filters includes a diplexer capable of splitting the UHF and GPS bands while handling 50 watts of contiguous power.

Bandpass Filter - Low Insertion loss at  center frequency

LC Multichannel Transceiver

800825
Bree Engineering model number 800825 is one in a series of 4 filters.

Center Frequency: 76 MHz

High Power Bias Tee

 

High Power Bias T

800105
Bree Engineering part number 800105 is a three port biased T capable of handling over 1,000 watts dc and 10 watts of RF power.

Multiplexer - Diplexer - Surface mount GPS

Multiplexed GPS Diplexer

800589
A diplexer for the GPS bands of L1 and L2.

CH1: 1217 – 1237 MHz
CH2: 1565 – 1585 MHz

Surface Mount Bandpass Filter

 

Surface Mount Bandpass Filter

803727
Bree Engineering model number 803727 is a surface mount bandpass filter designed at 4000 MHz

Passband: 3650 – 4350 MHz

Multiplexer - Diplexer - GPS Bandsplitter

Multiplexed GPS Band Splitter

800020
A series of filters includes a surface mount package with a common input to high pass and low pass filters.

CH1: 400 – 1237.5 MHz
CH2: 1562.5 – 2400 MHz

Ultra High Q Lumped Element RF Filter

 

Ultra High Q Lumped Element Filter

800150
Bree Engineering part number 800150 is used as the IF discriminator filter in a High Probability Tracking Radar (HPTR).

Passband: 90.5 – 101.5 MHz

Multiplexer - Diplexer - Surface Mount Low Insertion Loss

Diplexer – SMT

800509
A family of elliptic function diplexers optimized for extended 50 ohm match.

CH1: DC – 140 MHz
CH2: 160 – 900 MHz

High Pass RF Filter

 

High Pass Filter

800339
A Series of high pass filters includes a broadband image cleanup filter.

Cutoff Frequency: 5000 MHz

RF Broadband Filter Bank

RF Broadband Filter Bank

800300 – 800302
This bank of three filters utilizes a broadband filter synthesis technique to realize highly selective filtering for the 1.7 GHz IF band.

800300: 1610 – 1790 MHz
800301: 1530 – 1870 MHz
800302: 1360 – 2040 MHz

High Pass RF Filter - Low Insertion Loss

 

High Pass Filter

800629
Part Number 800629 refers to a particular high pass filter intended for the uses of cleaning up unwanted signals across the frequency range. This type of high pass filter is one intended use, but different designs and uses can be implemented for filtering wanted signals.

Cutoff Frequency: 3800 MHz

Bandpass Filter - Pin Connections

PCB Mounted LC Filter

800798
Bree Engineering’s 4 section high performance lumped element filter at 700 MHz.

Passband: 687.5 – 732.5 MHz

Lowpass RF Filter - Clean up Filter

 

Clean up Lowpass Filter

800412
A Lowpass filter in a coaxial package for interface outside the system package.

Cutoff Frequency: 2060 MHz

Bandpass Filter - With Leads

Surface Mount LC Filter with Leads

800686
Bree Engineering’s high density surface mount filter featuring gull wing lead pins for input, output and grounding.

Passband: 9.98 – 10.56 MHz

Bandreject RF Filter

 

Bandreject Cellular/PCS Test Station Cleanup Filter

800673
This series of bandreject filters far exceeds the applications original needs. The passbands of interest are the cellular at 700 to 894 MHz and the PCS at 1850 to 2000 MHz.

Center Frequency: 1575 MHz