SPECTRUM 95100

Comb
Generators
Series 900
Series 95
Combline Spacing 1 to 1000 MHz
Commercial -- Military
Features
■ Built-in-Test (BIT)
■ Jammers
■ Phase Locked Loops
■ Lower Cost
■ Modulation Option
Spectrum Microwave Series 95 Comb Generators use a
Step Recovery Diode (SRD) to generate very narrow
voltage spikes; these in turn produce an output
frequency spectrum rich in harmonics. The spacing
between the signals is equal to the source that drives
the SRD, which in most cases is a stable crystal
oscillator. Examples of the spectrum for a number of
comb generators are included on the reverse side of
this fact sheet. The crystal oscillator is normally
internal; however, an external signal can be used to
drive the SRD.
If only certain combline signals are required for a
particular application, a filter tuned to the desired
combline must be used.
Comb Generators have several applications. They are
commonly used as Built-in-Test (BIT) oscillators to
calibrate receivers; other uses are in Phase Locked
Loops (PLL), Jammers, Antenna Testing, Linearizing
Voltage Controlled Oscillators, etc.
Spectrum Microwave, Inc.
www.SpectrumMicrowave.com
2707 Black Lake Place Phila, Pa. 19154
PH: 215-464-4000 FAX: 215-464-4001
Comb
Generators
SERIES 95
Series 900
SPECIFICATIONS
Comb Spacing .......................................................... 1 to 1000 MHz
Output Spectrum ................................................ See plots (Typical)
Frequency Stability ................................................... +1 to +30 ppm
Temperature ...................................... (0 to +50 ºC) to (-55 to +85 ºC)
Input Voltage ..................................................................... +15 VDC
Connectors ................................................................ RF-SMA Jack
DC Input .............................................. Solder Type Filter Capacitors
SERIES 95
SPECTRUM ENVELOPES
Spectrum Microwave, Inc.
www.SpectrumMicrowave.com
2707 Black Lake Place Phila, Pa. 19154
PH: 215-464-4000 FAX: 215-464-4001