The QSFx001 series of switched RF filter banks from Open.Tech delivers high-speed, high-isolation filtering across 0.5 to 18 GHz in a ruggedized, SOSA-aligned 6U VPX form factor. With sub-100 ns switching speeds and up to 10 filter channels per module, these filter banks are engineered for mission-critical RF signal routing and preconditioning.
Each module supports TTL or CMOS digital control via Micro-D, DC pin headers, or VITA 46-compliant VPX interfaces. Filtering is implemented using a range of techniques—including lumped element, combline, ceramic, and printed filters—to support bandwidths from 1% to 100%, depending on the target band.
The compact, hermetically sealed design features internal potting for reliability in high-vibration or thermally stressed environments.
Feature Highlights
0.5 to 18 GHz operating range
Sub-100 ns switching between filter channels
>60 dB isolation (typical 70 dBc)
Supports up to 10 switched channels
TTL/CMOS control via RS232 or RS485
Filter types: Lumped, Combline, Ceramic, Printed
Bandwidth options from 1% to 100%
Ruggedized, hermetic housing (VITA format available)
SMA, GPO, GPPO, or SMT microstrip I/O options
-150 dBc/Hz phase noise, 2 ns group delay match
RoHS compliant, conduction-cooled
Use Cases
Electronic Warfare (EW) spectrum shaping
Radar bandpass filtering and clutter reduction
Frequency thinning for SIGINT and COMINT systems
Programmable RF front-end conditioning
Pre-digitization signal path isolation
RF testing, emulation, and prototyping environments
