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BPF 900/3

Band Pass FiltersBPF 900/3

Band-Pass Filter for the 900 MHz Band

Description

  • The BPF 900/3 is a 3-cavity band-pass filter using full-length quarter-wave resonators.
  • This filter can be used as a preselector to protect a receiver against interference from transmissions out of the passband, or it can be used to reduce spurious output from a transmitter with up to 50 W output power.
  • The filter can be tuned within the entire 820 - 960 MHz band. Careful design and choice of materials ensure reliable operation over a wide temperature range.
  • The housing is made of extruded aluminium, the chassis of steel, and teflon insulation has been used in the coaxial cables and in the connectors.
  • BPF 900/3 is coated with black vinyl to prevent corrosion.

Specifications

Electrical
Model BPF 900/3
Filter Type Band-pass filter
Frequency 820 - 960 MHz
Max. Input Power 50 W
Insertion Loss ≤ 1.2 dB
Impedance 50 Ω
Attenuation 0-790 MHz > 45 dB, See curves
Reject Attenuation See curve
VSWR ≤ 1.5:1
Bandwidth See curve
Mechanical
Connection(s) N(f)
(BNC(f), TNC(f), UHF(f) or SMA(f) on request)
Dimensions 153 x 77 x 33 mm / 6 x 3 x 1 in.
Weight Approx. 0.35 kg / 0.77 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability Approx. 10 ppm / °C

Ordering Designations

Model Product No.
BPF 900/3 N(f) 200000935

Typical Response Curve

Mounting Details

BPF-900-3-holeplacing\

All dimensions are given in mm.

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