When designing modern electronic warfare (EW), radar test benches, multi-band jamming, or broadband EMC testing systems, RF engineers face the challenge of achieving high saturation power across multi-octave bandwidths while maintaining stable integration.
The MCW0472M50A provides a single-module ultra-wideband solution spanning UHF, L-band, S-band, and C-band. Designed to deliver a nominal 100W saturated output power across the 400 MHz to 7200 MHz frequency range, this Solid-State Power Amplifier (SSPA) simplifies RF front-end architectures by reducing the need for complex band-switching networks.
Technical Specs & Engineering Support
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Key RF Specifications at a Glance (MCW0472M50A)
| Parameter | Specification | Unit / Note |
| Frequency Range | 400 – 7200 | MHz |
| Output Saturated Power (Psat) | 100 | W (Nominal) |
| Small-Signal Gain | 50 | dB (Typ.) |
| Operating Voltage | +36 | VDC |
| Current Consumption | 13 | A (Typ. at full CW power) |
| Operating Baseplate Temp | -40 to +75 | °C |
| Dimensions (L × W × H) | 400 × 300 × 30 | mm (Aluminum Housing) |
Broadband 400 MHz–7.2 GHz RF Power Amplifier Architecture
Traditional multi-band test setups often rely on several sub-octave amplifiers multiplexed together. The MCW0472M50A’s broadband architecture consolidates frequency coverage into a single footprint.
Based on the typical small-signal gain of 50 dB, a theoretical input level of approximately 0 dBm corresponds to 50 dBm (100W) under ideal small-signal gain conditions. Actual drive requirements will vary with frequency and gain compression.
100 W GaN SSPA for EW, Radar and EMC Test Systems
For applications involving non-constant envelope modulations (such as those used in advanced communication or radar simulation testing), the module can be considered when operated with appropriate power back-off to align with the system’s specific linearity requirements.
3:1 VSWR Protection and RF Load Mismatch Handling
In dynamic environments like EMC susceptibility testing and active jamming, antenna impedances can fluctuate wildly. The MCW0472M50A incorporates internal protection circuitry designed to tolerate a load VSWR of up to 3:1. This ensures robust survivability against typical RF load mismatches encountered in laboratory and field testing without catastrophic failure.
Thermal Management for Continuous 100W CW Operation
Thermal dissipation is the physical bottleneck for any high-power CW RF amplifier. With a 36V / 13A nominal DC draw at full power, proper thermal management is critical to prevent degradation.
Conductive cooling through the baseplate is required for continuous CW operation. The unit should be mounted to an appropriately sized heatsink, with forced-air cooling recommended for continuous high-power operation to maintain the baseplate temperature safely below the +75°C maximum operating limit.
Frequently Asked Questions (Technical & Integration)
Q: What is the input power required to achieve 100 W output?
A: With a typical small-signal gain of 50 dB, a theoretical input level of approximately 0 dBm corresponds to 100W under ideal conditions. The exact required input drive will vary depending on frequency-dependent gain compression.
Q: Can the MCW0472M50A handle high VSWR loads?
A: Yes, the amplifier is designed with rugged devices and internal protection circuitry to safely tolerate up to a 3:1 VSWR load mismatch condition.
Q: Can the amplifier cover custom frequency subsets?
A: Yes. If your application only requires a specific sub-band (e.g., 2–6 GHz or 4–7 GHz), the module can be evaluated for a specific sub-band based on system requirements.
Q: What cooling method is recommended for continuous CW operation?
A: Conductive cooling through the baseplate is required. We recommend mounting the unit to a finned extruded aluminum heatsink, supplemented by active forced-air cooling across the fins to ensure the baseplate remains below +75°C.