MTI 3948U Pulse TWT 9 GHz – 10 GHz RF Performance • • • • • • 5% Maximum Duty 7945 W Minimum Power 9.0 to 10.0 GHz -40° to 85° C 1150 W Typ. Prime Power @5% 47-48 dB Typical Gain • 15.45” L x 4” W x 3.78” H (39.2 x 10.15 x 9.6 cm) • ±15° Phase Match Typical Operating Conditions Element Voltage Heater Helix with RF without RF Grid On Grid Off Cathode (Ek) Collector w/RF Coll. #1 Coll. #2 Coll. #3 Current Power Supply Requirements Voltage Min. Voltage Max. Current Max. -6.3 Vdc 2.2 A -6.1 Vdc -6.5 Vdc 2.8 A Ground Ground 185 Vpk -325 Vdc -14.2 kV 400 mApk 80 mApk 1.0 mApk 0.02 mA 2.25 Apk Ground Ground 100 Vpk -300 Vdc -13 kV Ground Ground 300 Vpk -500 Vdc -15 kV 460 mApk @ 5% 460 mApk @ 5% 30 mApk 0.5 mA 2.5 Apk 10.5 kV 7.67 kV 5.4 kV 825 mApk 740 mApk 285 mApk 74% x Ek ±2% 54% x Ek ±2% 38% x Ek ±2% Cathode voltage is measured with respect to ground. Heater, Collector, and Grid voltages are measured with respect to Cathode. 1.1 Apk 1.0 Apk 2.4 Apk Freq (GHz) Typ. Sat. Power Output (W) Min. Spec. Power Output (W) Typ. Gain @ Spec. Power (dB) 9.0 8000 7945 47 9.1 8000 7945 47 9.2 8000 7945 47 9.3 8000 7945 47 9.4 8000 7945 48 9.5 8000 7945 47 9.6 8000 7945 47 9.7 8000 7945 47 9.8 8000 7945 47 9.9 8000 7945 47 10.0 8000 7945 47 Typical power output is shown to illustrate capability. Typical gain shown is without equalizer. Performance Typical Spec Input VSWR .......................................1.6:1 .................... 2.0:1 Output VSWR ....................................1.4:1 .................... 2.0:1 Max. Duty ........................................... 5% ......................... 5% Max. Pulsewidth ............................... 50 µs ................. 100 µs Grid Capacitance .............................. 49 pF .................. 60 pF. Min. Harmonic Separation .............. -12 dBc .............. -10 dBc Noise Power Density (dBm/MHz) ..................................... >-14 ........................ -10 Prime Power ................................... 1150 W .............. 1500 W This model number is controlled by the International Traffic in Arms Regulations, and can only be exported via a U.S. Department of State export license. They may not be transferred, transshipped on a non-continuous voyage, or otherwise be disposed of in any other country, either in their original form or after being incorporated into other end-items, without the prior written approval of the U.S. Department of State. Specifications are subject to change without notice. Teledyne TWT Products • 11361 Sunrise Park Drive • Rancho Cordova, CA 95742 • 916.638.3344 • www.teledynemicrowave.com This model number is controlled by the International Traffic in Arms Regulations, and can only be exported via a U.S. Department of State export license. They may not be transferred, transshipped on a non-continuous voyage, or otherwise be disposed of in any other country, either in their original form or after being incorporated into other end-items, without the prior written approval of the U.S. Department of State. Teledyne TWT Products • 11361 Sunrise Park Drive • Rancho Cordova, CA 95742 • 916.638.3344 • www.teledynemicrowave.com 9 GHz – 10 GHz Pulse TWT ● MTI 3948U