MTI 3948 Pulse TWT 8.8 GHz – 10.5 GHz RF Performance • • • • • • 2% Maximum Duty 8200 W Minimum Power 8.8 to 10.5 GHz -40° to 85° C 621 W Typ. Prime Power @2% 50-51 dB Typical Gain • 15.4” L x 2.75” W x 3.25” H (39.2 x 7 x 8.3 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 Current Power Supply Requirements Voltage Min. Voltage Max. Current Max. -6.3 Vdc 2.2 A -6.1 Vdc -6.5 Vdc 2.5 A Ground Ground 250 Vpk -300 Vdc -14.2 kV 470 mApk 75 mApk 0 0 2.5 Apk Ground Ground 50 Vpk -300 Vdc -14 kV Ground Ground 250 Vpk -500 Vdc -15 kV 800 mApk @ 2% 800 mApk @ 2% 30 mApk 0.5 mA 2.5 Apk 11 kV 2.13 Apk 75% x Ek ±2% Cathode voltage is measured with respect to ground. Heater, Collector, and Grid voltages are measured with respect to Cathode. 2.5 Apk Freq (GHz) Typ. Sat. Power Output (W) Min. Spec. Power Output (W) Typ. Gain @ Spec. Power (dB) 8.8 8.9 9.0 9.2 9.4 9.6 9.8 10.0 10.1 10.2 10.3 10.4 10.5 8510 8700 8700 8800 8900 8900 8900 8900 8900 8800 8800 8800 8700 8200 8600 8700 8700 8700 8700 8700 8700 8700 8700 8700 8700 8500 50 50 51 51 51 51 51 51 51 51 51 51 50 Typical power output is shown to illustrate capability. Typical gain shown is without equalizer. Higher gain is available with SSA. Performance Typical Spec Input VSWR .......................................1.5:1 .................... 2.0:1 Output VSWR ....................................1.5:1 .................... 1.8:1 Max. Duty ............................................ — .......................... 2% Max. Pulsewidth .................................. — ...................... 50 µs Grid Capacitance .............................. 40 pF ................... 60 pF Min. Harmonic Separation .............. -12 dBc .............. -10 dBc Noise Power Density (dBm/MHz) ...................................... -14 ......................... -10 Prime Power .................................... 621 W ................. 750 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 8.8 GHz – 10.5 GHz Pulse TWT ● MTI 3948