4780 GaN BUC

80 and 100 W C-band GaN BUCs
Compact and Lightweight
Designed and built with VSAT stabilized antenna platforms
and other similar satcom-on-the-move customer applications
in mind.
Highly Efficient
CPI has incorporated state-of-the-art Gallium Nitride (GaN)
HEMT technology into its popular and field-proven Mini-BUC
packaging. 30% to 50% more efficient than comparable
GaAs-based products.
Comprehensive M&C Functionality
Accessible anytime, anywhere via Internet or mobile phone.
Integrate with SNMP to NMS. Enables effective operational
management and minimizes network outage. Allows change
of IP address without serial cable. Dual LO, serial and
LAN interface.
Internal Self-Resetting Protection
Protects against high temperatures, open/short/overdrive RF
output conditions (forward and reverse), INT/EXT reference
10 MHz conditions, prime power fluctuations. RF output
overdrive protection prevents damage from higher than rated input power.
Models 4780 and 4710H
80/100 watt C-band GaN BUCs
for satellite uplink applications
•Internal or multiplexed 10 MHz reference
•Multi-band BUC: select from multiple
factory-set frequency bands within
•1:1 Redundant Switching
•Auto-sensing, high stability internal
10 MHz OCXO reference
•Future option: DC power
(contact CPI if required)
Global Applications
Meets Electromagnetic Compatibility Directive 2004/108/EC
to satisfy worldwide requirements and is CE-marked.
Worldwide Support
Backed by over 35 years of satellite communications
experience, and CPI’sworldwide 24-hour customer
support network that includes more than 20 regional
factory service centers.
811 Hansen Way, PO Box 51625
Palo Alto, CA 94303 USA
+1 (650) 846-3803
+1 (650) 424-1744
e-mail:[email protected]
Specifications 80 and 100 W C-band GaN BUCs
Model 4780
Model 4710H
5.850 to 6.425 GHz, or 5.850 to 6.725 GHz
L-Band Input
Output Power (min.)
Saturated (Psat, CW)
Linear (Plin1)
Linear (Plin2)
Local Oscillator Frequency
950 to 1525 MHz or 950 to 1825 MHz
Note: Plin1 is the output power at the specified intermodulation. Plin2 is output power at specified spectral regrowth.
80 watts (49 dBm)
40 watts (46 dBm)
50 watts (47 dBm)
100 watts (50 dBm)
50 watts (47 dBm)
63 watts (48 dBm)
4900 and 4975 MHz (with extended band option user may also select 5200 and 5275 MHz)
Gain at 0 dB Attenuation
77 dB ±2.0 dB
Gain Stability
Over any 50˚C range, freq. set
Over temp, frequency set
Over 24 hours
±1.5 dB max.
±2.0 dB max.
±0.25 dB (fixed temperature and constant drive)
Gain Flatness Over Any 40 MHz
±1.0 dB max.
Gain Flatness Over Full Band
±2.0 dB max.
Spectral Regrowth
Reference Frequency
-25 dBc max. with respect to each of two equal carriers 5 MHz apart
Input and Output: 14 dB return loss, 1.5:1
<-30 dBc @ 1.0x symbol rate, 1024 kbps, QPSK 7/8 VIT
10 MHz (internal reference option available)
RF output VSWR
1.5:1 max.
Reference Freq. Input (external)
Multiplexed on N-type transmit IF input
Reference Freq. Level (external)
-10 to +5 dBm
Ref. Freq. Level Meter
Yes, via M&C
IF Input Level Meter
-5 to -45 dBm, ±2.0 dBm
Output Phase Noise
-65 dBc/Hz at 100 Hz, -75 dBc/Hz at 1 kHz, -85 dBc/Hz at 10 kHz, -95 dBc/Hz at 100 kHz
Transmit Attenuator
0 to 20 in 0.25 dB steps
AM/PM Conversion
2.0˚/dB max. at 2 dB output backoff
Output Power Meter
Range: 15 dB; Absolute Accuracy: ±1 dB max. when compensation frequency compensation set;
Relative Accuracy: ±0.5 dB max. when compensation frequency compensation set;
Modes: CW and burst with adjustable threshold
Spurious/Harmonic Output
-55 dBc max. at linear output power
Group Delay
0.03 ns/MHz linear max, 0.01 ns/MHz2 parabolic max, 1.0 ns pk-pk ripple max. in any 36 MHz band
Prime Power
95 to 265 VAC (Future option: 36 to 60 VDC with min. 40 VDC turn-on optional)
Power Consumption
Ambient Temperature
280 watts typ. Plin, 400 watts max.
Relative Humidity
100% condensing
Shock and Vibration
300 watts typ. at Plin, 420 watts max.
-40˚C to +60˚C operating, -40˚C to +70˚C non-operating
5000 m operating (16,400 ft)
20 g peak, 11 msec, 1/2 sine; 2.1 grms, 5 to 500 Hz
RF Output Connection
WR-137G with 5 mm through-holes
M&C Interface
FSK, RS-232, RS485/422, LAN
M&C Protocols
ASCII, NDSatcom v1, SABus, Codan packet, Telnet, SNMP v1, WEB GUI
Prime Power Connectors
Dimensions, L x W x H
AC Connector: LTW PWF-04PMMS-SC7001; AC Mating Connector: C016 20D003 110 12;
(future option: DC Connector : 97B 3102R 16-11P-622; DC Mating Connector: 97B 3106F 16-11S-622)
250 x 151 x 134 mm (9.8” x 5.9” x 5.3”) Note: does not include connectors, contact CPI for outline drawing if needed.
4.9 kg (10.8 lbs) typ.
Quality Management
System - ISO 9001:2008
Specifications may change without notice as a result of additional data or product refinement. Please contact CPI
before using this information for system design.
MKT 373, ISSUE 8 dated OCT 2015 Page 2 of 3
Configuration Guide
80 and 100 W Ku-band GaN BUCs
Configure your 4700 Series GaN BUCs
Configuring your BUC is easy. Much of the configuration is already predetermined.
All that is left is to indicate output power level, whether LAN interface is required,
which frequency range is needed, which type of prime power is required, and
whether the internal reference option is required. Instructions follow:
Box 1: Output Power Level/Model Number
- Enter “4780” for 80 W model
- Enter “4710H” for 100 W model
Box 2: LAN Option placeholder
- Enter “L” for BUCs with LAN option selected
- LEAVE BLANK if the LAN option is not selected Box 4: Output frequency range (within the C-band)
- Enter “S” for 5.850 to 6.425 GHz
- Enter “E” for 5.850 to 6.725 GHz
Box 5: Input power
- Enter “AC” for AC power
- Future Option: Enter “48” for 36-60 V DC input power
(contact CPI if required)
Box 8: Internal reference
-Enter “R” only if internal reference option is selected
-LEAVE BLANK if internal reference option is not selected
_ AC /
_ CE _
Examples: 4710HL-W/S-AC/EX-CE-R indicates a BUC with a frequency
range of 5.850 - 6.425 GHz, with LAN, AC input power and internal
reference. 4780-W/E-AC/EX-CE indicates a BUC with a frequency range
of 5.850 - 6.725 GHz, without LAN, with AC input power and no
internal reference.
Notes: Box 3 indicates a waveguide RF output connection. Box 6 indicates that
power is fed via an external connector. Box 7 indicates that this product is
CE marked.
Quality Management
System - ISO 9001:2008
For more detailed information, please refer to the corresponding CPI technical description if one has been
published, or contact CPI. Specifications may change without notice as a result of additional data or product
refinement. Please contact CPI before using this information for system design.
MKT 373, ISSUE 8 dated OCT 2015, page 3 of 3