Teledyne 7 RU Chassis, Руководство по эксплуатации, Страница: 81 / 144

Operations Manual, 7RU SSPA Chassis 208528 REV M 81
5.1 zBUC Converter Features
This section describes the features available in the new Teledyne Paradise Datacom zBUC
TM
converter. The zBUC converter is available as an option for the SSPA. The zBUC converter
is available in four C-Band models, two Ku-Band models and one X-Band model.
Table 5-1
shows the specifications for the respective models.
5.2 zBUC Converter Theory of Operation
The ZBUC converter is a low gain block up converter with a P
1dB
of 0 dBm. This topology
allows the system to be integrated with little impact on the general electrical specifications of
the SSPA module.
The ZBUC converter utilizes single up conversion from L-Band to the desired RF band. The
local oscillator circuits are designed to maintain the lowest possible output phase noise. The
frequency synthesizer utilizes industry leading technology which allows for phase noise
performance previously unattainable in PLL design. The typical phase noise specification is
outlined in
Table 5-2 .
Band selectivity is accomplished using the most aggressive filtering possible while maintain-
ing specified power and spurious performance.
Table 5-1: zBUC Converter Frequency Specifications
Band Frequency Plan* IF Input LO Frequency RF Output
C Standard C-Band 950 - 1525 MHz 4.900 GHz 5.850 - 6.425 GHz
C Extended C-Band 950 - 1825 MHz 4.900 GHz 5.850 - 6.725 GHz
C Palapa Band 950 - 1250 MHz 5.475 GHz 6.425 - 6.725 GHz
C Insat Band 950 - 1250 MHz 5.775 GHz 6.725 - 7.025 GHz
X Standard X-Band 950 - 1450 MHz 6.950 GHz 7.900 - 8.400 GHz
Ku Standard Ku-Band 950 - 1450 MHz 13.050 GHz 14.00 - 14.50 GHz
Ku Extended Ku-Band 950 - 1700 MHz 12.800 GHz 13.75 - 14.50 GHz
* Custom frequency plans available upon request.
Table 5-2: zBUC Converter RF Output Phase Noise
Offset Guaranteed Max. C-Band (typical) X-Band (typical) Ku-Band (typical) Units
10 Hz -30 -60 -60 -50 dBc/Hz
100 Hz -60 -80 -75 -65 dBc/Hz
1 kHz -70 -80 -75 -72 dBc/Hz
10 kHz -80 -85 -100 -90 dBc/Hz
100 kHz -90 -120 -110 -110 dBc/Hz
1 MHz -90 -125 -122 -120 dBc/Hz