Cavity Filters
Bandpass Cavity Filters
Cavity Filters
Bird Technologies - The RF Experts

Bandpass Cavity Filters

Bandpass Cavity Filters
The Bandpass cavity passes one narrow band of frequencies and attenuates all others with increasing attenuation above and below the pass frequency. It is equivalent to a parallel-tuned circuit and is most often used for general transmitter spurious clean-up or a sharpening of a single receiver front end selectivity with or without amplification.

TX RX bandpass cavities (4", 6", 8” and 10") have adjustable selectivity characteristics (rotatable loops) to allow a trade-off between insertion loss (0.5--3.0 dB) and selectivity. Maximum power handling is typically determined by insertion loss setting.

T-Pass Cavity Filters are a variation of the Bandpass cavity used for our expandable multicoupler applications. Its general characteristics are nearly identical to a bandpass cavity but the output loop has a pair of N-connectors so it can easily be coupled to other channels.

Check up to five products to compare
  Item No Item Name Frequency Range Max Power per Cavity Impedance Ω
100 11-35 Series 108-136 MHz, Bandpass Cavity Filters 108-136 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
200 11-36 Series 132-150 MHz, Bandpass Cavity Filters 132-150 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
300 11-37 Series 144-174 MHz, Bandpass Cavity Filters 144-174 MHz 270 W, per cavity @ 0.5 dB IL (100 W - Model: 11-37-09)
60W, per cavity @ 3.0 dB IL (N/A - Model: 11-37-09)
50
400 11-53-01 225-400 MHz, Bandpass Cavity Filter 225-400 100 W, per cavity @ 0.5 dB IL
100 W, per cavity @ 3.0 dB IL
50
500 11-65-26 406-420 MHz, Bandpass Cavity Filters 406-420 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
600 11-69 Series 470-512 MHz, Bandpass Cavity Filters 470-512 MHz 270 W, per cavity @ 0.5 dB IL (100 W - Model: 11-69-09)
60 W, per cavity @ 3.0 dB IL (N/A - Model: 11-69-09)
50
700 11-70 Series 450-470 MHz, Bandpass Cavity Filters 450-470 MHz 270 W, per cavity @ 0.5 dB IL (100 W - Model 11-70-09)
60W, per cavity @ 3.0 dB IL (N/A - Model 11-70-09)
50
800 11-83B Series 746-869 MHz, Bandpass Cavity Filters 746-869 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
1000 11-86 Series 806-821 MHz, Bandpass Cavity Filters 806-821 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
1050 11-87 Series 851-866 MHz, Bandpass Cavity Filters 851-866 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
1100 11-88 Series 806-960 MHz, Bandpass Cavity Filters 806-960 MHz 270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
50
1100 11-90-05 806-960 MHz, Bandpass Cavity Filters 806-960 MHz 100 W, per cavity @ 0.5 dB IL
N/A, per cavity @ 3.0 dB IL
50