Amplifier Research 25S1G4 - Precision Solid State RF Amplifier
The Amplifier Research 25S1G4 is a state-of-the-art, solid-state, self-contained, air-cooled broadband amplifier meticulously engineered for applications demanding instantaneous bandwidth, high gain, and exceptional linearity. Encased in a sleek, modern cabinet, this versatile unit is designed for benchtop use while allowing for easy removal for immediate rack mounting.
Key Features & Specifications
- Rated Power Output: Minimum 25 watts
- Input for Rated Output: 1.0 milliwatt maximum
- Power Output at 3dB Compression:
- Power Output at 1dB Compression:
- Flatness: ±1.5 dB typical / ±2.0 dB maximum
- Frequency Response: 0.8 – 4.2 GHz instantaneously
- Gain (at Maximum Setting): 44 dB minimum
- Gain Adjustment: Continuous range, 10 dB minimum (4096 steps remote)
- Input Impedance: 50 ohms; VSWR 2.0:1 maximum
- Output Impedance: 50 ohms, nominal
- Mismatch Tolerance: Capable of 100% rated power without foldback; operates without damage or oscillation across varying source and load impedance
- Modulation Capability: Accurately reproduces AM, FM, or pulse Modulation present in the input signal
- Third Order Intercept: Refer to specific chart determined using two tones spaced 1 MHz apart, typical for WCDMA systems
- Harmonic Distortion: Minus 20 dbc maximum at 20 watts
- Spurious Signals: Minus 73 dbc typical
- Phase Linearity: ±1.0 deg/100 MHz, typical
- Primary Power: Automatically selected from 90-132 or 180-264 VAC, 50/60 Hz, single phase; maximum 340 watts
- RF Connectors: Type N female
- Remote Interfaces:
- RS-232: 9 pin Subminiature D (female)
- Safety Interlock: 15 pin Subminiature D
- Cooling: Forced air (self-contained fans)
This amplifier is particularly valuable for use as a driver amplifier in testing wireless and communication components and subsystems. Its low spurious signals and outstanding linearity make it a reliable choice across multiple frequency bands and various communication technologies, including CDMA, W-CDMA, TDMA, and GSM. It also excels in EMC test applications, ensuring undistorted modulation envelopes.
