Amplifier Research 15S1G3

The Amplifier Research 15S1G3 is a solid-state, air-cooled broadband microwave amplifier delivering 15 watts minimum CW output across 0.8 GHz to 3.0 GHz. Engineered for instantaneous bandwidth and high linearity, this self-contained unit excels in EMC testing, communications, and radar applications where gain stability and output power control are critical. The amplifier accepts maximum input of 1.0 milliwatt for rated output and provides 42 dB minimum gain with front-panel adjustment.

Gain flatness is ±1.5 dB typical across the band. Input and output impedance are both 50 ohms nominal. RF input leveling protects the first stage when input exceeds 0 dBm, while over-temperature protection removes DC bias from amplifier stages during thermal fault conditions.

A digital display shows operating status and fault indication; the unit automatically returns to operation once the fault clears. Type N female connectors serve RF input and output. The 15S1G3 supports both local front-panel control and remote operation via IEEE-488 (GPIB) and RS-232 interfaces, making it suitable as a driver amplifier for wireless and communication component testing including CDMA, W-CDMA, TDMA, and GSM systems.

The unit weighs 20.5 kg and measures 50.3 × 15.5 × 37.6 cm (W × H × D) in standard benchtop configuration. The enclosure is removable for equipment rack mounting.

Technical Specifications

• Frequency Range: 0.8 GHz to 3.0 GHz


• Rated Output Power: 15 watts minimum CW


• Output Power @ 3 dB Compression: 15 watts nominal


• Maximum Input for Rated Output: 1.0 milliwatt


• Gain (maximum setting): 42 dB minimum


• Gain Flatness: ±1.5 dB typical; ±2.0 dB maximum


• Input Impedance: 50 ohms


• Output Impedance: 50 ohms nominal


• Cooling: Air-cooled


• Weight: 20.5 kg (45.0 lb)


• Dimensions: 50.3 × 15.5 × 37.6 cm (W × H × D)

Key Features

• RF input leveling circuit with 0 dBm threshold protection


• Over-temperature fault detection with automatic DC bias removal


• Excellent linearity with low spurious signal content


• Front-panel gain control with digital display


• Removable cabinet for benchtop or rack-mount configuration

Typical Applications

• EMC testing


• Communications system development


• Radar system design


• CDMA, W-CDMA, TDMA, and GSM component testing


• Driver amplifier for wireless subsystems

Compatibility & Integration

• Remote control via IEEE-488 (GPIB) and RS-232


• Type N female RF connectors


• Front-panel local control with gain adjustment