BUC
BUC
A Block Upconverter that translates a block of frequencies from an intermediate frequency (IF) to a higher RF frequency for satellite uplink transmission
Understanding BUC
BUCs receive L-band or IF signals (typically 950-1450 MHz) from indoor equipment and upconvert them to the satellite uplink frequency band (C-band, Ku-band, or Ka-band). They include a frequency converter, power amplifier, and often a reference oscillator.
BUC output power ranges from 1W for small VSAT terminals to over 400W for large earth station transmitters. Key specifications include output power, gain flatness, phase noise, and spurious performance.
Common Questions
Frequently Asked Questions
What is the difference between a BUC and an SSPA?
A BUC includes frequency conversion from IF to RF plus amplification, while an SSPA is purely a power amplifier operating at the final RF frequency.
Where is a BUC mounted?
BUCs are typically mounted outdoors at the antenna feed to minimize cable losses at the high uplink frequency.
See Also