VSS3617

Beverly Microwave Division
150 Sohier Road • Beverly, MA 01915
Phone: +1(978) 922-6000 • Email: [email protected]
www.cpii.com/bmd
S-Band GaN SSPA for Air Traffic Control
VSS3617
Features:
• 12 kW power combined (minimum)
• BITE and controls local/remote
• Fully redundant
• Soft fail power combining
• Independent short and long pulse 50 dB sector
power control
• Dual receiver channels
Benefits:
• High efficiency
• Excellent pulse fidelity
• Excellent AM/PM, phase noise, and spectral
regrowth performance
CPI-Built RF Power Modules
High efficiency, high power, and compact with
proven GaN transistor technology.
CPI’s VSS3617 Solid State Power Amplifiers are
rugged, highly-efficient and easy to maintain.
The VSS3617 Solid State Power Amplifiers are
designed for use as air traffic control radar
transmitters and cover the 2.7 – 2.9 GHz
frequency band. Gallium nitride transistors are
combined into 1.3 kW bricks which are air cooled.
The 1.3 kW bricks are power-combined using
radial combiners and waveguide combiners.
Optimized for Pulsed Radars
This amplifier utilizes GaN transistors to provide
high gain, high efficiency and excellent pulse
fidelity. The result is excellent AM/PM,
phase-noise and spectral regrowth performance.
This amplifier is compliant to NTIA regulatory
requirements for this frequency.
•• Solid
Power Amplifiers
Amplifiers• •Integrated
IntegratedMicrowave
Microwave
Assemblies
Solid State
State Power
Assemblies
••Receiver
ControlComponents
Components• •Transmitters
Transmitters
• Amplifiers
Receiver Protectors
Protectors •• Control
• Amplifiers
•• Modulators
Magnetrons• •Crossed
CrossedField
FieldAmplifiers
Amplifiers
Modulators •• Magnetrons
• Ring Loop
Loop Traveling
TravelingWave
WaveTubes
Tubes• •Power
PowerCouplers
Couplers
Beverly Microwave Division
www.cpii.com/bmd
S-Band GaN Solid State Power Amplifier - VSS3617
Frequency Range
Specifications
2.7 to 2.9 GHz
Minimum Saturated Peak RF
Output
Typical Pulse Width
12 kW
1 to 100 µsec
Maximum Pulse Droop
0.5 dB
Maximum Duty Cycle
10%
Output Power Flatness
across frequency range
Nominal Small Signal Gain
1 dB
62 dB
Stability
65 dB
Maximum Output VSWR
1.5:1
Maximum Harmonic Output
-65 dBc
-165 dBm / Hz
Maximum Interpulse Thermal
Noise
Noise Power Density
-100 dBc into a 100 MHz
bandwidth
Pulse Repetition Rate
800 Hz – 1 KHz
NTIA Compliance
Compliant for a radar of
this frequency – with
customer pulse shaping
as required.
Prime Power
Specifications
Ambient Temperature
380 VAC, 3 Phase, 50-60Hz
-20C to +50C operating
Relative Humidity
100% non-condensing
Altitude - Operating
- Non-operating
30,000 feet (9.14km)
70,000 feet (21.34km)
Shock and Vibration
Air & Truck Transportation
Cooling
Forced air
RF Input Connection
N type female
RF Output Connection
WR 284
RF Output Monitor
Control Connector
Dimensions (width)
32 in (81.28cm)
Dimensions (height)
74 in (187.96cm)
Dimensions (depth)
24 in (960.96cm)
Weight
Output Circulator
Less than 900 lbs.
(408.23kg)
Provided for VSWR
protection.
Long and Short Pulse Comparison
Long Pulse Attenuation
80.00
70.00
Output Power (dBm)
60.00
50.00
40.00
Long Pulse
Attenuation
30.00
20.00
10.00
0.00
0.0
10.0
20.0
30.0
40.0
50.0
60.0
Attenuation (dB)
The values listed above represent specified limits for the product and are subject to change. The data should be used for basic
information only. Formal, controlled specifications may be obtained from CPI for use in equipment design.
For information on this and other CPI products visit our webpage at www.cpii.com/bmd, or contact:
CPI Beverly Microwave Division, Telephone: +1 (978) 922-6000 • FAX: +1 (978) 922-8914
• Email: [email protected]
Rev. 7/15