Frequency Multiplier Oscillator (FMO) SPECTRUM MICROWAVE The Frequency Multiplier Oscillator (FMO) is a compact 21 channel synthesized signal generator that provides transmit and LO signals for L-band and S-Band airborne radar systems. This design incorporates a unique isolation system for exceptional phase noise performance during vibration. This ruggedized design has successfully passed environmental qualification for Temperature-Altitude, Humidity, Salt Fog, Vibration, Acoustical Noise, and Shock Testing. Interested parties should contact the factory directly for exact levels and conditions used for environmental test. Typical Performance Characteristics ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 21 Transmit channels 21 first LO channels 195 MHz fixed second LO. 5 MHz fixed third LO 5 MHz differential TTL processors clock All signals are coherent to an internal reference Frequency accuracy +/- 0.3 PPM after an 8 minute warm-up Residual FM noise measured 100% Biphase modulation on transmit and first LO Output Power 27 dBm min Output Frequency “L” through “S” Band Frequency Switching Time <50 ms Modulation J1-22 Differential line driver F1-800-200 or F1-800-150 F1 Freq Coupler 10 MHz Frequency Standard VCO3 Divide by 2 50 MHz X2 Multiplier X3 Multiplier Divide by 10 5 MHz Differential line driver Amp F1 Mixer Coupler Amp Bandpass Filter F1 J3 Amp VCO2 F1+200 MHz Bandpass Filter Amp F0 J2 200 MHz 150 MHz Mixer X2 Multiplier Amp 400 MHz 5 MHz Divide by 2 100 MHz VCXO Note: Only 1 of the 3 VCOs are active depending on the channel selected. Coupler 800 MHz Loop Filter VCO1 Biphase Modulator 200 MHz Phase Detector Loop Filter Phase detector 150 MHz SPDT switch 200 MHz 800 MHz F1-800 MHz divide by N 200 MHz Mixer 5 MHz Lowpass Filter Mixer Amp X2 Multiplier Filter 195 MHz Filter F2 J4 5 MHz sine J5 J1 pins 8 and 20 5 MHz Differential TTL CERTIFIED SPECTRUM MICROWAVE • 2707 Black Lake Place • Philadelphia, PA 19154 • Phone: (215) 464-4000 • Fax: (215) 464-4001 SPECTRUM CONTROL GmbH • Hansastrasse 6 • 91126 Schwabach, Germany • Phone: (49)-9122-795-0 • Fax: (49)-9122-795-58 www.specwave.com