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BPF 70/...-250

Band Pass FiltersBPF 70/...-250

Band-Pass Filters for the 450 MHz Band

Description

  • High power base station band-pass filters for the 380 – 470 MHz range.
  • The use of large ø250 mm cavities means a high Q, resulting in a very narrow passband.
  • The large dimensions also mean a high power rating.
  • Unloaded Q of a single cavity is approx. 8000.
  • High frequency stability on temperature and power.
  • 19” mounting brackets are included for BPF 70/2-250 and BPF 70/3-250 models.

Specifications

Electrical
Model BPF 70/1-250 BPF 70/2-250 BPF 70/3-250
Frequency 380 - 470 MHz
Max. Input Power 350 W @ 0.5 dB IL
150 W @ 2.0 dB IL		 350 W @ 1.0 dB IL
150 W @ 4.0 dB IL		 350 W @ 1.5 dB IL
150 W @ 6.0 dB IL
Insertion Loss Adjustable 0.5 - 2.0 dB Adjustable 0.8 - 4.0 dB Adjustable 1.2 - 6.0 dB
Impedance 50 Ω
Attenuation See figure 1 See figure 2 See figure 3
VSWR < 1.5:1
Mechanical
Connection(s) N(f)
Dimensions ø250 x 400 mm
ø9.84 x 15.74 in.		 L : 250 x W : 500 x H : 400 mm
L : 9.84 x W : 19.68 x H : 15.74 in.		 L : 250 x W : 750 x H : 400 mm
L : 9.84 x W : 29.52 x H : 15.74 in.
Weight Approx. 2.8 kg / 6.17 lb. Approx. 5.2 kg / 11.46 lb. Approx. 9.6 kg / 21.16 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability Approx. 1.5 ppm / °C

Ordering Designations

Model Product No.
BPF 70/1-250 200000955
BPF 70/2-250 200000963
BPF 70/3-250 200000957

Typical Response Curves

Figure 1

 

Figure 2

Figure 3

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