Mixer

800 MHz

F1-800

MHz

Lowpass

Filter

F1 Freq

Mixer

divide

by N

SPDT

switch

200 MHz

150 MHz

5 MHz

Phase

detector

Loop

Filter

Coupler

VCO1

VCO2

VCO3

Amp

Note:

Only 1 of the 3

VCOs are active

depending on the

channel selected.

Modulation

Dierential

line driver

J1-22

Biphase

Modulator

Amp

Bandpass

Filter

Amp

Mixer

F1+200 MHz

200 MHz

800 MHz

400 MHz

200 MHz

Amp

Filter

195 MHz

Phase

Detector

Loop

Filter

Divide

by 2

5 MHz

10 MHz

Frequency

Standard

100 MHz

VCXO

Coupler

Multiplier

Divide

by 2

Divide

by 10

Multiplier

J1 pins 8 and 20

5 MHz

Dierential TTL

Amp Filter

5 MHz

50 MHz

150 MHz

Mixer

5 MHz sine

200 MHz

F1-800-200 or F1-800-150

Coupler

Dierential

line driver

Multiplier

Bandpass

Filter

Frequency Multiplier

Oscillator (FMO)

SPECTRUM MICROWAVE

CERTIFIED

www.SpectrumMicrowave.com

SPECTRUM MICROWAVE • 2707 Black Lake Place • Philadelphia, PA 19154 • Phone: (215) 464-4000 • Fax: (215) 464-4001

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.

Typical Performance Characteristics

21 Transmit channels

21 rst LO channels

195 MHz xed second LO

5 MHz xed third LO

5 MHz dierential 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 rst LO

Output Power 27 dBm min

Output Frequency “L” through “S” Band

Frequency Switching Time <50 ms

This rugged design has successfully passed environmental

qualication 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.