Microwave Electronics Products

Microwave Synthesizer SERIES SMS60 With MODULATION

Fast Indirect Synthesizer With Modulation

Applications Notes for RF oscillators Other Microwave Synthesizers

KRATOS General Microwave developed the series SMS60 fast, broadband, indirect synthesizer with modulation function to be used as the frequency source in signal generators to support the 5G cellular market.

The modulation input can be an analog voltage or a digital signal. This provides the system designer with more flexibility in his application and possibilities for complex modulation options. 

Of special importance is the fact, that this synthesizer remains fully locked even during frequency modulation. As a result of it, the high frequency accuracy and other high performances of the synthesizer are kept all of the time. For this reason, in this synthesizer there isn’t the “movement” of the center frequency nor the problem of non linearized modulation.

APPLICATIONS

The Model SMS60 series Fast Synthesizer, with Frequency Modulation capability, is a cost effective solutin for various test systems with emphsis on the 5G cellular test applications.

  • Wide Frequency range: 2 to 20 GHz
  • Low Phase Noise
  • Small Size
  • High Reliability
Microwave Synthesizer Series SM60 with Modulation 
SERIES SMS60 SYNTHESIZER SPECIFICATIONS
                                     SPECIFICATION
  PARAMETER  MODEL SMS6218
 MODEL SMS6618  MODEL SMS6220
1  FREQUENCY RANGE (GHz)  2 to 18 (1)  6 to 18 (1)  2 to 20 (1)
 2  ACCURACY  Same (PPM) as of the reference crystal oscillator
 3  FREQUENCY AGING  Same (PPM) as of the reference crystal oscillator
 4  OUTPUT POWER
4.1  Min. (dBm) (1)  10
 4.2  Variation, over freq. at a given  temp., max. (dB)   ±1.5
 4.3  Variation, over temperature, max. (dB)  ± 2.5
 5  SETTLING TIME (6) , max. (µsec)
 125±25
 6  SSB PHASE NOISE , max (dBc/Hz) (4)
 6.1     @ 100 Hz Offset  -75   -74
 6.2     @ 1 kHz Offset  -90  -89
 6.3     @ 10 kHz Offset  -97  -96
 6.4     @ 100 kHz Offset  -97  -96
 6.5     @ 1 MHz Offset  -97  -96
 6.6     @ 10 MHz Offset  -100  -99
 7  HARMONICS, max (dBc)

 -30 up to 24 GHz
-40 from 24 GHz to 40 GHz

 8  SUB-HARMONICS, max (dBc)  -55
 9  SPURIOUS, max (dBc) (2)  -55  -54
 10  FREQUENCY CONTROL (PARALLEL)  18 BITS
 11  FREQ. STEP SIZE, nominal LSB (kHz) (1)  100
 12  REFERENCE CRYSTAL OSCILLATOR - EXTERNAL (3)
 12.1     INPUT FREQUENCY, (MHz) (5)  100
 12.2     INPUT POWER,  (dBm) 0 ± 2
 13  MODULATION
 13.1     Bandwidth, (MHz)  DC to 10
 13.2     Frequency Deviation, min. (MHz) ±500 
 13.3     Sensitivity control (3 levels plus Mod. OFF)  2 BITS
 13.4     Digital Sensitivity, nominal (MHz/bit)  1, 1/4, 1/16, Mod. OFF
 13.5     Analog Control, (V)  ± 1
 13.6     Analog Sensitivity, nominal (MHz/V)  512, 128, 32, Mod. OFF
 13.7    Analog Modulation Input Impedance, Ω 50
 14  POWER SUPPLY REQUIREMENT, max. (A)
 14.1     +12V to +15V  3.2
 14.2     -12V to -15V  0.45
 14.3     +5V ±5%  2.1
 15  OPERATING TEMP. (°C) (1)  +10 to +70
 16  DIMENSIONS, Inches (mm)  6.48 (164.6) x 6.23 (158.2) x 1.24 (31.5) 
     
   NOTES  
  (1) Other values are available. Please contact Sales.
(2) Spurious level is guaranteed during modulation at OFF state. When modulation is set to ON, the spurious
     level is -50 dBc typical.
(3) Internal Reference Oscillator is optional
(4) With an external reference oscillator with the following phase noise dBc/Hz
     @ 100 Hz Offset: -125
@ 1 kHz Offset: -140
@ 10 kHz Offset: -155
@ >100 kHz Offset: -160
 

(5) 10 MHz Optional

(6) To within ± 1 MHz from rhe final frequency

 

 

 

   
 

AVAILABLE OPTIONS

 Option No.   
Description
 G01   Internal Reference Crystal Oscillator
 G15  Analog Modulation (J4) - Input Impedance 1KΩ

 

 

DIMENSIONS and WEIGHT MODELS SM6218, SM6618 & SM6220

Dimensions and weight Models SM6218 and SM6219 Synthesizers 

 DIMENSIONS IN INCHES (mm

 Weight (Approx.): 1,4 Kg (3.1 Pounds

Functions for Power Connector J3 and Control Connector J2

Dimensions are stated in inches (mm). Tolerances, unless otherwise indicated: .XX ±.02; .XXX ±.008

The information contained in this data sheet is basic marketing information and does not contain any export controlled information.