Amplifiers > S-Band 500 W Ultra-Linear PA
Key highlights
The S-Band 500 W Ultra-Linear PA Subsystem is designed for S-band RF links that require high output power, linear performance and integrated control. Covering 2.0-2.2 GHz with 60 MHz operating bandwidth, the PA supports >500 W saturated output, >250 W linear QPSK output and >50 W linear WCDMA output with specified ACPR performance. It includes external on/off control, RF output power, temperature and DC bias monitoring, plus an integrated alarm signal, making it suitable for satellite communications payloads, TT&C transmitters and other S-band systems where linearity and health telemetry are important.
Applications
S-band satellite communications, S-band TT&C transmitters, QPSK RF links, WCDMA RF links, ultra-linear power amplifiers, payload transmit chains, LEO/MEO/GEO communications, telemetry downlinks.
Key features
• Operational frequency: 2.0-2.2 GHz; typical center frequency: 2.1 GHz.
• Operating bandwidth: 60 MHz.
• Saturated output: Psat >500 W.
• Linear output: >250 W for QPSK with ACPR <-25 dBc.
• Linear output: >50 W for WCDMA with ACPR <-50 dBc.
• PAE: >14% for 50 W WCDMA with ACPR <-50 dBc.
• Gain: 55 dB; stability: unconditional.
• Drain voltage: 28 V; Idq: 1 A.
• PDC and dissipated power: TBD.
• Package: 8 x 7 x 1.8 in.
• MCU controller interface: RS-422.
• Subsystem functions: gain, external on/off control, RF output power, temperature monitoring, DC bias monitoring, RF output power monitoring and integrated alarm signal.
• Temperature range: -20 deg C to +85 deg C.
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Last updated: 2026-08-19
S-Band 500 W Ultra-Linear PA
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