Amplifier Research 125A400 Amplifier
Innovative Amplification Solution
Introducing the Amplifier Research 125A400, a self-contained, air-cooled, broadband amplifier designed for demanding applications requiring instantaneous bandwidth and high gain. This cutting-edge device employs push-pull LDMOS circuitry across all high-power stages, effectively reducing distortion while enhancing stability for superior performance.
Key Features
- Minimum Output Power: 125 watts with an RF sweep generator.
- Advanced Control Panel: Equipped with a Digital Control Panel (DCP) featuring a color LCD touch screen and rotary knob, enabling both local and remote operation.
- Status Reporting: Display real-time Forward Power and Reflected Power, along with internal amplifier status reports.
- Gain Control: Easily adjustable gain control and pulse input capabilities for versatile applications.
- RF Sample Ports: Forward and reflective RF sample ports allow for precise power measurements.
Connectivity and Compatibility
The Amplifier Research 125A400 offers comprehensive remote control options via GPIB/IEEE-488, RS-232, RS-232 fiber optic, Ethernet, and USB interfaces. The rear panel is fitted with bus interface connectors, while a dedicated switch on the front panel ensures seamless operation whether locally or remotely. High-efficiency, power factor corrected switching power supplies provide reliable DC to all internal sub-assemblies.
Applications
This amplifier is an ideal choice for various RF applications, including:
- RF susceptibility testing
- Antenna and component testing
- Driving higher power amplifiers
Specifications
- Rated Output Power: 125 watts minimum
- Input for Rated Output: 1.0 milliwatt maximum
- Power Output @ 3 dB Compression:
- Power Output @ 1 dB Compression:
- Flatness: ± 2.0 dB maximum
- Frequency Response: 10 kHz–400 MHz instantaneously
- Gain (at Maximum Setting): 51 dB minimum
- Gain Adjustment: Continuous range of 20 dB minimum
- Input Impedance: 50 ohms, VSWR 1.5:1 maximum
- Output Impedance: 50 ohms, nominal
- Mismatch Tolerance: Operates at 100% rated power with up to 6.0:1 mismatch
- Modulation Capability: Supports AM, FM, and pulse modulation on the input signal
- Pulse Mode Gating Characteristics: Signal +3.0 to 6.0 VDC (into 50 ohms)
- Harmonic Distortion: -20 dBc maximum at 75 watts
- Third Order Intercept Point: 62 dBm typical
- RF Power Display: 0–200 watts full scale
- Primary Power: 85–264 VAC, 47–63 Hz, 600 watts maximum, @ 0.99 P.F. typical
