Application Notes for Microwave Oscillators
Series SQ Narrow Frequency Band Synthesizer
Kratos General Microwave introduces the Series SQ Narrow Band Synthesizer as a high performance, low cost alternative to a fixed frequency source.
APPLICATIONS
The Series SQ synthesizer has been designed to be used as the L.O. in various up and down frequency converters. It can be used as a replacement of a DRO, in applications that require high frequency stability over temperature and in operation under vibrations.
- Operating Frequency within 0.5 to 8 GHz
- High Frequency Accuracy
- High Frequency Stability
- Low Cost
- Compact Size
- High Reliability
| SPECIFICATION | ||
|---|---|---|
| PARAMETER | MODEL SQ0580 | |
| 1 | FREQUENCY RANGE (GHz) (1) | 0.5 to 8 |
| 2 | RF BANDWIDTH, up to (%) | 0.3 |
| 3 | ACCURACY, (ppm) | Same as of the ref. crystal |
| 4 | FREQUENCY AGING, (ppm) | Same as of the ref. crystal |
| 5 | FREQUENCY STABILITY, (ppm) | Same as of the ref. crystal |
| 6 | OUTPUT POWER, (dBm) | +10 to +14 |
| 7 | SETTLING TIME, max (μsec) | 50 |
| 8 | SSB PHASE NOISE , max (dBc/Hz) (2) | |
| 8.1 | @ 100 Hz Offset | -70 |
| 8.2 | @ 1 KHz Offset | -90 |
| 8.3 | @ 10 KHz Offset | -99 |
| 8.4 | @ 100 KHz Offset | -125 |
| 8.5 | @ 1 MHz Offset | -142 |
| 9 | HARMONICS, typ. (dBc) | -60 |
| 10 | SUB-HARMONICS, max (dBc) | -60 |
| 11 | SPURIOUS, max (dBc) | -80 |
| 12 | CONTROL | Serial Control |
| 13 | FREQ. STEP SIZE, nominal LSB (Hz) (1) | 100 |
| 14 | EXTERNAL REFERENCE OSCILLATOR (2) | |
| 14.1 | INPUT FREQUENCY (MHz) | 100 |
| 14.2 | INPUT POWER (dBm) | 0 ± 2 |
| 15 | SUPPLY VOLTAGE , (VDC) | 12 ±0.4V @ 290 mA |
| 16.1 | DIMENSIONS, (Inch) | 2.25 x 2.25 x 1.28 |
| 16.2 | DIMENSIONS, (mm) | 57.2 x 57.2 x 32.5 |
| 17 | RF CONNECTORS | SMA Female |
| 18 | CONTROL CONNECTOR | MDM |
| 19 | OPERATING TEMPERATURE, (oC) | -40 to +85 |
| 20 | ENVIRONMENTAL CONDITIONS | Airborne and Naval |
| 21 | LOCK DETECT OUTPUT | TTL High |
- Other Parameters are Optional
-
For internal Reference Oscillator (option G01) or external reference oscillator with the following specs (100MHz output):
- 100Hz offset: – 120 dBc/Hz
- 1KHz offset: -137 dBc/Hz
- 10KHz offset: -145 dBc/Hz
DIMENTIONS AND WEIGHT
Series SQ Narrow Frequency Band Synthesizer Models S2779
|
|
Model S2779-14.5 |
Model S2779-16.5 |
Model 2771 | |
|
No. |
Parameter |
Value |
Value |
Value |
|
1
|
Nominal Frequencies |
14.425 – 14.575 GHz |
16.425 – 16.575 GHz |
16.5 GHz |
|
2
|
Step Size |
25 MHz |
25 MHz |
NA |
|
3
|
Settling time |
2.6 msec, typ |
2.6 msec, Typ |
NA |
|
4
|
Frequency Accuracy |
±1.0 MHz max. |
±1.0 MHz max. |
±1.0 MHz max. |
|
5
|
RF Power ON |
12 dBm, Min |
12 dBm, Min |
10 to 12 dBm |
|
6
|
RF Power OFF |
60dBc ,Min |
60dBc ,Min |
NA |
|
7
|
Switching Time |
500 nsec |
500 nsec |
NA |
|
8
|
Phase Noise |
-85 dBc/Hz max. at rest -78 ±3.0 dBc/Hz under vibration |
-84 dBc/Hz max. at rest -77 ±3.0 dBc/Hz under vibration |
-85 dBc/Hz max. -90 dBc/Hz typ. @ rest -80 dBc/Hz max. -85 dBc/Hz typ. @ 12 Grms vibration |
|
9
|
Spurious, Harmonics& Sub Harmonics |
-60 dBc max. |
-60 dBc max. |
-60 dBc max. |
|
10
|
Supply Voltages |
+12.0 to +15.0 V |
+12.0 to +15.0 V |
+6.5 V to +7.0 V |
|
11
|
Current Consumption |
380 mA typ. 400mA,Max |
380 mA typ. 400mA,Max |
330 mA typ. |
|
12
|
Power Consumption |
4.56 Watt @12V |
4.56 Watt @12V |
|
|
13
|
Operating Temperature Range |
-40 to +85 °C |
-40 to +85 °C |
-40 to +85 °C |
|
14
|
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