The Dudley Lab Dual Band SSPA is a solid-state power amplifier delivering high-gain amplification across the Ku Band (13.75–14.50 GHz). Engineered for dual-band operation, it provides output power configurations from 20 W to 250 W with exceptional gain stability and low distortion. The amplifier integrates automatic protection switching with manual override capability, making it suitable for demanding RF systems requiring precise power control and rapid standby transitions.
Technical Specifications
Frequency Range: 13.75–14.50 GHz (Ku Band)
Output Power (P1dB):
• 20 W SSPA: 43 dBm
• 50 W SSPA: 47 dBm
• 100 W SSPA: 50 dBm
• 250 W SSPA: 54 dBm
Gain at P1dB (minimum):
• 20 W SSPA: 55 dB
• 50 W SSPA: 56 dB
• 100 W SSPA: 59 dB
• 250 W SSPA: 65 dB
Gain Characteristics: Adjustable range of minimum 20 dB in 0.1 dB steps. Flatness limited to 2 dB peak-to-peak across the full band. Gain slope does not exceed 0.6 dB/40 MHz. Gain stability maintains ±0.25 dB/24 hours at 25°C ±5°C.
Linearity & Distortion: AM/PM conversion of maximum 2.5°/dB at P1dB and 2.0°/dB at 3 dB back-off. Intermodulation products reach −23 dBc at 3 dB back-off. Harmonics and spurious outputs are suppressed to −60 dBc at rated 1 dB gain compression.
Group Delay over 40 MHz Band: Linear component of 0.050 nsec/MHz maximum. Parabolic component of 0.005 nsec/MHz² maximum. Ripple limited to 1.000 nsec p-p/±18 MHz.
VSWR: Input 1.3:1 maximum, output 1.3:1 maximum, load 1.25:1 maximum.
Noise Figure: ≤10 dB at maximum gain.
Output Power Stability: ±0.2 dB of the desired setting value.
Power Supply: −48 VDC nominal (−44 V to −57 V operating range) with surge protection at 0.5 kV peak for line-to-ground and line-to-line coupling.
– Key Features
• Automatic protection switching with changeover time not exceeding 100 milliseconds
• Manual changeover capability for system redundancy
• Operation guaranteed to 3,000 meters altitude without degradation
• Designed for saline coastal environments with corrosion protection
• Category A environmental compliance for operation, transportation, and storage
• EMC protection against RF devices at test levels 2 (3 V/m) and 3 (10 V/m)
– Compatibility & Integration
The SSPA accommodates −48 VDC supply rails with integrated protection against surge conditions. Input and output waveguide flanges operate at maximum VSWR of 1.3:1, enabling straightforward integration into existing RF systems. Load impedance tolerance extends to 1.25:1 VSWR.
