Fast Tune Notch Filter Fast Tune Notch Filter Teledyne Defence’s fast tune notch filter (FTNF) has been designed to protect ESM receivers from high duty cycle frequency agile interference from on board (or cohort) combat radar systems. • Front-end filtering of the Radar pulses in the ESM sensor: Band-stop filters leave “holes” in ESM sensor spectral coverage YIG tuned filters are too slow to keep up with modern agile radar Each FTNF provides two independently controlled notches to suppress multiple interference. Electronic Support Measures (ESM) sensors need protection from high-level frequency-agile Radars; Common mitigating techniques include: • Synchronous blanking of the ESM sensor: Probability of intercept of ESM receiver is compromised when operating near a high duty cycle radar Multiple emitters on the same platform compounds the problem Teledyne Defence’s Fast Tuned Notch Filters (FTNF) can track the emitter’s transmissions at its agility rate such that the ESM sensor’s Probability of Intercept is maintained at an acceptable level. FEATURES APPLICATIONS • • • • • • • • • • • Modules for both S and X band coverage Fast tuning speed (<250ns) Dual independently controlled notches High rejection level Low loss in all pass state Can be cascaded Digital Tuning Control Quickly switches from notch to all-pass Good power handling ESM Receiver Protection Direction Finding (DF) System Protection See restrictions on published datasheets at www.teledynedefence.co.uk/ Teledyne Defence, Airedale House Royal London Industrial Estate Acorn Park, Charlestown Shipley, West Yorkshire | UK, BD17 7SW Tel: +44 (0) 1274 531` 602 | Fax: +44 (0) 1274 595 724 Email: [email protected] | Web: www.teledynedefence.co.uk Fine Tune Notch Filter | 022016 | Page 1 of 2 Fast Tune Notch Filter SPECIFICATIONS Specification Part Number (Band) All-Pass State Passband Insertion Loss Insertion Loss Ripple Passband VSWR (Input & Output) Harmonics (0 dBm input) Input 3rd Order Intercept Point ES005 (S-Band) ES006 (X-Band) 2.0 to 4.8 GHz 2.0 dB max 1.0 dB max 6.0 to 13.0 GHz 2.5 dB max 1.25 dB max 1.9:1 max (relative to 50 Ohms) 1.8:1 max (relative to 50 Ohms) -60 dBc max -60 dBc max +20 dBm min +25 dBm min 2 2 2.8 to 3.7 GHz 4 MHz ± 3.0 MHz 250 MHz max 12 MHz min 250 ns max 8.5 to 11.5 GHz 16 MHz ± 5.0 MHz 1.0 GHz max 40 MHz min 250 ns max +3 dBm max +25 dBm max +5V @ 300mA max +15V @ 300mA max -12V @ 200mA max Hermetic, SMA Female Hermetic, 37-way MDM (Micro-D) with receptacle pins +10 dBm max +25 dBm max +5V @ 210mA max +15V @ 225mA max -12V @ 200mA max Hermetic, SMA Female Hermetic, 37-way MDM (Micro-D) with receptacle pins Notch Operation Number of Independently Tuned Notches Tuning Range Tuning Resolution Tuning Accuracy –3dBc bandwidth –25dBc bandwidth Full range switching speed Power Handling & Supply Operating power range Survival power range Power Supplies RF Connectors Digital Control and Power Supplies Connector Tuning Control Input Requirement Single 8-bit binary Frequency Control Word - common for Notch A and B Independent Notch A Frequency Data Strobe Bit Independent Notch B Frequency Data Strobe Bit N/A N/A Single 8-bit binary Frequency Control Word - common for Notch A and B Independent Notch A Frequency Data Strobe Bit Independent Notch B Frequency Data Strobe Bit 1-bit Active-Low Auto-Correction Bit 3-bit LED (red, yellow) drive output lines for auto- calibration status indication Mechanical Weight Dimensions Environment Operating Temperature Storage Temperature 950 grams max 258.5 x 76 x 30 mm 750 grams max 206 x 76 x 30 mm -28 to +65ºC -40 to +85ºC -28 to +65ºC -40 to +85ºC See restrictions on published datasheets at www.teledynedefence.co.uk/ Teledyne Defence, Airedale House Royal London Industrial Estate Acorn Park, Charlestown Shipley, West Yorkshire | UK, BD17 7SW Tel: +44 (0) 1274 531` 602 | Fax: +44 (0) 1274 595 724 Email: [email protected] | Web: www.teledynedefence.co.uk Fine Tune Notch Filter | 022016 | Page 2 of 2