250W Ku-Band Block Up Converter | 13.75–14.5 GHz

The BUCPAM1370014500-250W is a 250W Block Up Converter developed for satellite communication ground station transmitters. It accepts a 950–1700 MHz IF input and up-converts it to a Ku-band output covering 13.75–14.5 GHz. The module uses GaN devices and a universal frequency conversion design. It is built for high output power, good linearity and long-term reliability in outdoor RF systems. The 800 MHz output bandwidth supports Ku-band transmit planning in a compact sealed package.

RF Performance

At 25°C with 0 dBm input, the converter delivers 250 W saturation output power. Typical power gain at PSAT is 54 dB, and small-signal gain is about 60 dB. Gain flatness stays within ±1 dB over the band. Input return loss is 10 dB. Harmonics and spurious signals are rated at -60 dBc, while IMD3 is typically -25 dBc and -23 dBc maximum. Test data at +0 dBm input shows output from 54.6 to 56.1 dBm across the band. In-band noise density is -80 dBm/Hz, and out-of-band noise in 10.7–12.7 GHz is -156 dBm/Hz. The listed performance assumes 50-ohm input and output matching.

Control and Protection

The host can turn the module on or off and read key parameters through the RJ45/Gigabit Ethernet interface. Monitoring includes current, voltage, temperature and transmit power. The product feature list also mentions RS485. This control link supports remote status checks, which helps unattended station monitoring. Internal key components are hermetically sealed to protect bare GaN dies and improve long-term reliability. Forced air cooling removes heat from power devices. Thermal shutdown triggers at 85°C ±5°C. The absolute maximum RF drive is +10 dBm, and the output tolerates a 10:1 load VSWR at 250 W across all load phases.

Mechanical and Environmental Fit

The unit measures 220 × 330 × 180 mm without connectors and weighs about 14 kg. RF input is SMA female. RF output uses a BJ120/FBP120 square flat flange. DC and AC connections use aerospace connectors. The housing is rated IP66. Operating case temperature is -20°C to +50°C, storage temperature is -25°C to +65°C, and relative humidity is up to 95% non-condensing. Operating voltage is 85–265 VAC, with 1100 W power consumption. Allow clearance around connectors and air paths during rack layout.

System Integration

Use a clean IF drive and confirm the input level before full-power operation. Keep forced airflow clear and mount the output flange securely. Because the output is 250 W, use suitable waveguide or coaxial transitions and follow RF safety rules. Monitor temperature, current and output power through the control interface. The sealed housing and IP66 rating help in ground station racks and outdoor cabinets where moisture and dust are concerns. Check AC supply capacity and cooling margin before commissioning.

Deployment Notes

The 250W Block Up Converter suits satellite ground stations, teleport racks and Ku-band transmitter chains that need a compact sealed high-power up converter. It covers the 13.75–14.5 GHz Ku-band transmit range with 800 MHz bandwidth. Before installation, check AC supply, cooling and load VSWR. During commissioning, log gain, power and temperature at several frequencies to confirm system margin. Keep connector seals clean and verify control-link settings before remote operation.