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고성능시간, 주파수 분배시스템 > Frequency Synthesizers |
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The 9.192 GHz Synthesizer CS-1 constitutes of two separate units: the
Synthesizer Module and the DC Module.
The Synthesizer Module is a high
stability and high resolution signal source designed to be used in the
implementation of a Cesium atomic clock. The unit is provided in a 2U, 19 inch
rack-mount enclosure. All synthesizer functions are accessed from the front
panel or a RS232 interface. An external trigger input may be used to synchronize
programmable events such as frequency sweeps, phase modulation and amplitude
modulation with external events.
The synthesizer is implemented with a
flexible modular topology. Two ultra-low noise quartz oscillators are part of
the multiplication chain from 5 MHz to 100 MHz. Buffered outputs are provided at
the front panel for 5 MHz, 10 MHz and 100 MHz. The 100 MHz signal is the highest
frequency in the low frequency section of the synthesizer. This 100 MHz signal
is distributed using a 1 input, four output isolation amplifier. One of these
100 MHz signal is used as the reference for a 9.2 GHz DRO. The output of the 9.2
GHz DRO is buffered and used to drive the LO port of a single-sideband mixer.
The second 100 MHz signal is used to clock a DDS synthesizer module. The DDS
synthesizer generates a 7.xx MHz signal with 48 bit resolution and complete
modulation capabilities. The DDS synthesizer output drives the IF port of the
single-sideband mixer. The lower sideband of the mixer is selected as the output
generating the 9.192 GHz output signal. The amplitude of the 9.192 GHz output is
controlled with 12 bits of resolution and an internal relay may be used to turn
off the RF signal.
The DC Module, also in a 2U, 19-inch rack-mount
enclosure, provides the DC power to the Synthesizer Module through DC cable.
Request a quote for this item. |
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| Specification |
|
Parameter |
Conditions |
Typ |
Units |
Frequency Stability
Ref. 5MHz, +13 dBm
Pair
Measurement |
Averaging Time
1 s
10 s
100 s
1000 s
100000
s
1000000 s |
-
6x10-14
6x10-15
6x10-16
7x10-17
3x10-17
1x10-17 |
|
Phase Noise
Carrier 9.192 GHz
Pair Measurement |
Offset Frequency
1 Hz
10 Hz
100 Hz
1kHz |
-
-69
-80
-93
-107 |
dBc/Hz |
Phase Noise
Carrier 100 MHz |
Offset Frequency
10 Hz
100 Hz
1 kz
>
10kHz |
-
-120
-133
-155
-175 |
dBc/Hz |
Phase Noise
Carrier 10 MHz |
Offset Frequency
1 Hz
10 Hz
100 Hz
>
1kHz |
-
-114
-142
-160
-168 |
dBc/Hz |
Phase Noise
Carrier 5 MHz |
Offset Frequency
1 Hz
10 Hz
100 Hz
>
1kHz |
-
-118
-150
-167
-17 |
dBc/Hz |
| Temperature Coefficient @ 9.192 GHz |
|
0.5 |
ps/K | | |
