# Bree Engineering

Manufacturer of custom RF Filters and Multiplexers from 5 MHz to 20 GHz

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Miniature Combline Cavity Filter 800004 This cavity filter combines high performance with a small foot print. This seven section filter has a center frequency of 3840 MHz its insertion loss is less than 0.9 dBa from 3650 to 4030 MHz. VSWR is less than 1.5: 1.0 and passband flatness is less than 0.80 dBc. Rejection is 30 dBc at 3500 MHz, 20 dBc at 3450 MHz and ultimate rejection of 80 dBc. Size is 2.70 x 0.75 x 0.65 and input/outputs are SMA female connectors.

Surface Mount LC Filter with Leads 800686 A high density surface mount filter featuring gull wing lead pins for input, output and grounding. Center frequency is 10.27 MHz. and the passband is .58 MHz. Passband loss is less than 1.0 dBa maximum and VSWR is 1.5:1.0 maximum. Rejection for this 4 pole chebyshev filter is 10 dBc minimum at 8.23/12.31 MHz and 30 dBc minimum at 5.23/15.31 MHz. Size is 1.25 x 0.45 x 0.30.

PCB Mounted LC Filter 800798 Bree Engineering model number 800798 is a 4 section high performance lumped element filter at 700 MHz. Its 25 MHz bandwidth has less than 3.0dBa of insertion loss (1.5 dBa is typical). The VSWR is less than 1.5 to 1.0 passband flatness is less than 1.0 dBc from 700 to 720 MHz. Rejection is greater than 40 dBc at 620 MHz and 790 MHz. Size is 0.75 x 0.44 x 0.31 inches with .020 RF pins.

Highpass / Lowpass Diplexer 800509 Bree Engineering model Number 800509 is in a family of elliptic function diplexers optimized for extended 50 ohm match. The lowpass of 0 to 140 Mhz and the highpass passband of 160 to 900 MHz both have less than 1.5dBa of insertion loss. The VSWR is less than 1.5 to 1.0 from 0 to 900 MHz at the common junction port. Rejection is greater than 40 dBa at 50 MHz from the crossover frequency. Size is 1.5 x 0.5 x 0.3.

High Power Low-pass Filter Bree Engineering 800506 Bree Engineering model number 800506 is a 13 element elliptic low-pass filter. Its construction allows for handling 120 watts CW power. The cutoff frequency of 980 MHz has less than 0.5 dba of insertion loss. Pass-band VSWR is less than 1.5 to 1.0. Rejection is greater than 28dBa at 1150 MHz. Size is 3.0 x 1.0 x 1.0 inches with Type N connectors.

Combline Filter 800524 Bree Engineering model number 800524 is a 7 section high Q filter at 1.7 GHz. Its 18 MHz bandwidth has less than 1.5 dBa of insertion loss and a VSWR of less than 1.5 to 1.0. The pass-band flatness is less than 0.4 dBc. Selectivity is greater than 60dBc at 40 MHz away from center frequency on both band edges. Size is 5.85 x 1.50 x 1.0 inches.

Broadband Filter Bank Bree Engineering 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. Typical passband range from 25 to 40 percent, bandpass flatness is less than 1.0 dBc and 2.0 nSc. Passband VSWR is better than 1.5:1.0. Skirt selectivity is greater than 35 dBc at 1.06 times the passband edge. Size for each of the three filters is 1.75 x .50 x .25 Inputs/outputs are .017 diameter pins.

High Pass Filter Bree Engineering 800339 A Series of high pass filters includes a broadband image cleanup filter. This configuration has a low loss of 2.0 dba of loss less than 1.0db of flatness from 5000 to 11500 Mhz. Rejection for this filter is greater than 50 db from DC to 4200 Mhz. Inputs and outputs are SMA-F and the overall size of the unit is 1.25 x 0.5 x 0.5 inches. Other sizes and configurations are available.

Clean-up High Pass Filter Bree Engineering 800629 A series of high pass filters includes a broad band image cleanup filter. This configuration has a low loss of 2.0 dBa and less than 1.0 db of flatness from 3800 to 5000 MHz. Rejection for this filter is greater than 30 dB from DC to 2000 MHz and 20 dB from 2000 to 3600 MHz. Input and outputs are SMA-F and the overall size of the unit is 2.00 x 0.5 x 0.5 inches. Others sizes and configurations are available.

Ultra High Q Lumped Element Filter Bree Engineering part number 800150 is used as the IF discriminator filter in a High Probability Tracking Radar (HPTR). Skirt selectivity on all units is controlled from 10 to 70 dBc. Repeatability is less than 5 nsec between all units. Size is 2.75 x 1.0 x 0.6 inches and is available in both surface mount and with connectors.

1.4 GHz Combline Filter Bree Engineering model number 800552 is a 4 section high Q combline filter at 1.4 GHz. Its 100 MHz bandwidth has less than 0.5 dBa of insertion loss and a VSWR of less than 1.5 to 1.0. Passband flatness is less than 1.0 dBc. Rejection bands are 20dBc at 1090 MHz and 40 dBc from 2700 to 4050 MHz. Power handling is rated at 150 watts at a 50% duty cycle. Size is 2.70 x 2.0 x 0.75 inches with .040 RF pins.

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. Its RF characteristics range from 200 to 1000 Mhz with a low loss of less than 0.5 db and VSWR better than 1.5:1.0. Input/Output RF connectors are type N and DC connection is 7/16 DIN Plug.

800589 Bree Engineering model Number 800589 is a diplexer for the GPS bands of L1 and L2. Insertion loss is less than 2.0 dBa across the bands. Rejection for L1 is 30 dBc at 1425 and 1800 MHz. Rejection for L2 is 30 dBc at 1110 and 1370 Mhz. The unit will survive a Sn62 re-flow environment. The size is 1.0 x 0.5 x 0.4.

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. Center frequency is 592.54 Mhz with a bandwidth of 12 Mhz. Passband characteristics are 3.5 dBa maximum loss, 1 ns maximum group delay variation and a minimum of 1.5:1.0 VSWR. Extended rejection is 70 dBc to 7.5 Ghz while maintaining less than 2.0:1.0 VSWR over the same band. Size is 3.10 x 1.00 x .60.