
HIGH PERFORMANCE DISTRIBUTION AMPLIFIER
The HPDA-100RM is a high performance distribution and isolation amplifier that may contain up to three distribution amplifier modules. Each module provides five unity gain outputs and 100 dB of channel-to-channel isolation, and 110 dB of reverse isolation. The phase noise of the modules is exceptionally low, typically –158 dBc/Hz @ 10 Hz and -174 dBc/Hz @ 10 kHz from the carrier. All the outputs are AC-coupled and the grounds are DC-isolated to reduce the effects of ground loops. The input and outputs have a low VSWR to minimize environmental effects on frequency distribution through long transmission lines.
The HPDA-100RM is available in a 1 U high 19” rack-mount enclosure.

- Features
- Applications
- Specifications
- Options
- 80-120 MHz
- Unity gain
- Return loss -25 dB
- High isolation: 100 dB
- Low phase noise:
-158 dBc/Hz @ 10 Hz
-174 dBc/Hz @ 10 kHz - Low distortion: -43 dBc
- High output: +16 dBm
- Specifications shown are valid for Part Numbers:
HPDA-100RM-A, HPDA-100RM-B, HPDA-100RM-B2, HPDA-100RM-C, HPDA-100RM-C2 and HPDA-100RM-D.
- Atomic frequency standards
- Instrumentation
- Reference frequency distribution
- Time scales
PARAMETER |
CONDITIONS |
TYP |
UNITS |
Input level |
1 dB compression |
16 |
dBm |
Bandwidth |
+/- 1 dB |
80 - 120 |
MHz |
Gain |
@ 100 MHz |
0.2 |
dB |
Impedance |
input output |
50 50 |
Ohms |
Return loss
|
input (S11) 100 MHz output (S22) 100 MHz |
-22
-30 |
dB
|
Distortion |
+13 dBm |
-43 |
dBc |
Isolation |
output to output output to input |
100 110 |
dB |
Phase noise |
10 Hz 100 Hz 1 kHz 10 kHz |
-158 -165 -171 -174 |
dBc/Hz |
HPDA-100RM-A, HPDA-100RM-B, HPDA-100RM-B2, HPDA-100RM-C, HPDA-100RM-C2 and HPDA-100RM-D.