Reconfigurable Filter Bank

  • Eight 2 GHz channels
  • 256 Filter states
  • Fast, <100 ns switching speeds
  • Low noise figure,  15 dB nominal

BSC have independently developed a fully reconfigurable adaptive filter solution, designed for fast & seamless switching into any of 256 filter states across the 2-18 GHz range.  Ideally suited to EW front-end preselection or protection, any combination of bandpass and bandstop states can be selected INTRODUCTION.  Each 2 GHz channel can be switched in (bandpass) and out (bandstop) of the signal path with a switching time of less than 100 ns. DC power and 8-bit TTL control is supplied through a standard 15-pin MDM connector. In the crowded spectrum of the future, front-end flexibility is of increasing importance. Not limited to 2-18 GHz or equal channel widths, the same core architecture may be used in more specific bands, for example at VHF/UHF frequencies. This makes the system equally as suited to EW as it is to Mil Comms applications, where sampling sensitivity or frequency-agile protocols respectively are key to system function.

Specification:

Channel Nominal Passband (GHz) Offset from band edge (MHz) Useable Passband
(GHz)
Lower 50 dB Rejection
(GHz)
Upper 50 dB Rejection
(GHz)
1 2-4 -250 2.00-3.75 N/A 5
2 4-6 +/- 250 4.25 – 5.75 3 7
3 6-8 +/- 250 6.25—7.75 5 9
4 8-10 +/- 300 8.30—9.70 7 11
5 10-12 +/- 300 10.30—11.70 9 13
6 12-14 +/- 400 12.40—13.60 11 15
7 14-16 +/- 400 14.40—15.60 13 17
8 16-18 +/- 400 16.40—18.00 15 N/A

 

Characteristic: Specification:
Passband Insertion Loss: 0 dB nominal, +/- 2.5 dB max
(+/- 0.05 dB/°C deviation)
Passband VSWR: 2.5:1 nominal, 3:1 max
Passband Group Delay Variation: 6 ns max
Noise Figure: 15 dB nominal, 17 dB max
P1dB (input): +5 dBm min
IP3 (input): +15 dBm min
Reconfiguration Time: 100 ns max
Operating Temperature: -30°C to +70°C
Control Method: 8-bit TTL
DC Power Supply: +12 V / -12 V
Current Consumption: +12V: 1.5 A max
-12V: 100 mA max
RF Connector: SMA Female
DC & Control Connector: 15-pin MDM, male contact
External Dimensions (Excluding Connectors): 130 x 105 x 16 mm typical

 

Pin Function Pin Function Pin Function
1 GND 6 CH 2 11 CH 5
2 +12 V 7 CH 3 12 CH 6
3 +12 V 8 GND 13 CH 7
4 -12 V 9 GND 14 CH 8
5 CH 1 10 CH 4 15 GND

 

 

Measured Performance Data

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BSC is a world-leader in the design and manufacture of Microwave filter based active Subsystems, Modules and Filters, from low quantity prototypes, up to high production volumes.

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