Cavity Filters
Series-Notch Cavity Filters
Cavity Filters
Bird Technologies - The RF Experts

Series-Notch Cavity Filters

Series-Notch® Cavity Filters
The Series-Notch® passes a relatively wide band of frequencies while rejecting a very narrow band of frequencies. It is equivalent to a series-tuned circuit. Notch depth is variable from 15-25 dB. Pass and notch frequencies must be known so that the optimum loop assembly can be used. This is the best filter for very close separations (200-400 KHz) in UHF applications.
Check up to five products to compare
  Item No Item Name Frequency Range Insertion Loss vs Frequency Separation Interface Specs Ω
  20-35-01 108-136 MHz, Series-Notch Cavity Filter 108-136 MHz

(with single cavity, notch depth @ 15 dB)
<1.0 dB @ 100 kHz
<0.2 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
<1.5 dB @ 100 kHz
<0.3 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

50
  20-35-02 108-136 MHz, Series-Notch Cavity Filter 108-136 MHz

(with dual cavity, notch depth @ 34 dB)
<2.0 dB @ 100 kHz
<0.6 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
<3.0 dB @ 100 kHz
<0.8 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

50
  20-36-01 132-150 MHz, Series-Notch Cavity Filter 132-150 MHz

(with single cavity, notch depth @ 15 dB)
<1.0 dB @ 100 kHz
<0.2 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
<1.5 dB @ 100 kHz
<0.3 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

50
  20-36-02 132-150 MHz, Series-Notch Cavity Filter 132-150 MHz

(with dual cavity, notch depth @ 34 dB)
<2.0 dB @ 100 kHz
<0.6 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
<3.0 dB @ 100 kHz
<0.8 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

50
  20-37-01 144-174 MHz, Series-Notch Cavity Filter 144-174 MHz

(with single cavity, notch depth @ 15 dB)
<1.0 dB @ 100 kHz
<0.2 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
<1.8 dB @ 100 kHz
<0.3 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

50
  20-37-02 144-174 MHz, Series-Notch Cavity Filter 144-174 MHz

(with dual cavity, notch depth @ 34 dB)
<2.0 dB @ 100 kHz
<0.6 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
<3.6 dB @ 100 kHz
<0.8 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

50
  20-37-05 144-174 MHz, Series-Notch Cavity Filter 144-174 MHz

(with single cavity, notch depth @ 15 dB)
<2.0 dB @ 50 kHz
<0.2 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
<1.0 dB @ 100 kHz
<0.2 dB @ 250 kHz
<0.2 dB @ 500 KHz
<0.2 dB @ 1 MHz

50
  20-37-06 144-174 MHz, Series-Notch Cavity Filter 144-174 MHz

(with dual cavity, notch depth @ 34 dB)
<3.5 dB @ 50 kHz
<0.5 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
<2.0 dB @ 100 kHz
<0.6 dB @ 250 kHz
<0.5 dB @ 500 KHz
<0.4 dB @ 1 MHz

50
  20-70-01 450-470 MHz, Series-Notch Cavity Filter 450-470 MHz

(with single cavity, notch depth @ 15 dB)
1.5 dB @ 175 kHz
0.7 dB @ 250 kHz
0.2 dB @ 500 kHz
0.1 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
1.5 dB @ 250 kHz
1.2 dB @ 275 kHz
0.4 dB @ 500 kHz
0.1 dB @ 1 MHz

50
  20-70-02 450-470 MHz, Series-Notch Cavity Filter 450-470 MHz

(with dual cavity, notch depth @ 34 dB)
3.0 dB @ 175 kHz
1.5 dB @ 250 kHz
0.5 dB @ 500 kHz
0.4 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
3.1 dB @ 250 kHz
2.6 dB @ 275 kHz
1.0 dB @ 500 kHz
0.4 dB @ 1 MHz

50
  20-70-25 450-470 MHz, Series-Notch Cavity Filter 450-470 MHz

(with single cavity, notch depth @ 15 dB)
1.2 dB @ 100 kHz
0.4 dB @ 250 kHz
<0.1 dB @ 500 kHz
<0.1 dB @ 1 MHz

(with single cavity, notch depth @ 20 dB)
0.6 dB @ 200 kHz
0.4 dB @ 250 kHz
0.1 dB @ 500 kHz
<0.1 dB @ 1 MHz

50
  20-70-26 450-470 MHz, Series-Notch Cavity Filter 450-470 MHz

(with dual cavity, notch depth @ 34 dB)
2.6 dB @ 100 kHz
1.0 dB @ 250 kHz
0.3 dB @ 500 kHz
0.3 dB @ 1 MHz

(with dual cavity, notch depth @ 44 dB)
1.5 dB @ 200 kHz
1.0 dB @ 250 kHz
0.4 dB @ 500 kHz
0.3 dB @ 1 MHz

50