Amplifier Research 400A400
RF Amplifier, 10 kHz - 400 MHz, 400W

Amplifiers - RF and Microwave >> 1 GHz or Less and 101 Watt to 999 Watt >> RF Amplifier, 10 kHz - 400 MHz, 400W





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Product Overview

AMPLIFIER RESEARCH 400A400

The Amplifier Research 400A400 RF Amplifier is a self-contained, air-cooled, broadband, completely solid state amplifier designed for applications where instantaneous bandwidth and high gain are required. Push-pull LDMOS circuitry is utilized in all high power stages in the interest of lowering distortion and improving stability. The Model 400A400, when used with an RF sweep generator, will provide a minimum of 400 watts of swept power. 

The AR 400A400 Amplifier is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a 3.75 inch diagonal graphic display, menu assigned softkeys, a single rotary knob, and four dedicated switches to offer extensive control and status reporting capability. The display provides operational presentation of Forward Power and Reflected Power plus control status and reports of internal amplifier status. Special features include a gain control, forward RF sample port, and a reflective RF sample port for precise power measurements. 

All amplifier control functions and status indications are available remotely in GPIB/IEEE-488, RS-232 and USB format. The buss interface connectors are located on the back panel and positive control of local or remote operation is assured by a keylock on the front panel of the amplifier. 

High efficiency universal input, power factor corrected switching power supplies provides DC to all internal subassemblies. 

Housed in a stylish enclosure (if not sylish, it's at least noticable!), the Amplifier Research 400A400 Amplifier provides readily available RF power for typical applications such as RF susceptibility testing, antenna and component testing, watt meter calibration, particle accelerators, plasma generation, communications and use as a driver for higher power amplifiers.

Specifications of the AR 400A400 Amplifier include:

RATED OUTPUT POWER ............................................... 400 watts, 10kHz-250MHz 

 400-350 watts, 250MHz-400MHz (derated slope of .33W/MHz) 

INPUT FOR RATED OUTPUT .......................................... 1.0 milliwatt maximum 

POWER OUTPUT @ 3 dB compression ......................... 350 watts, 10kHz-250MHz 

 350-300 watts, 250MHz-400MHz (derated slope of .33W/MHz) 

POWER OUTPUT @ 1 dB compression .......................... 275 watts, 10kHz-250MHz 

 275-225 watts, 250MHz-400MHz (derated slope of .33W/MHz) 

FLATNESS ..................................................................... . ± 3.5 dB maximum 

FREQUENCY RESPONSE ............................................... 10 kHz–400 MHz instantaneously 

GAIN (at maximum setting) ........................................... 56 dB minimum 

GAIN ADJUSTMENT (continuous range) ......................... 20 dB minimum 

INPUT IMPEDANCE ....................................................... 50 ohms, VSWR 1.5:1 maximum 

OUTPUT IMPEDANCE ................................................... 50 ohms, nominal 

MISMATCH TOLERANCE ............................................... 100% rated power without foldback up to 6.0:1 mismatch, above which may 

limit to 200W reflected power. Will operate without damage or oscillation with 

any magnitude and phase of source and load impedance. 

MODULATION CAPABILITY ........................................... Will faithfully reproduce AM, FM, or pulse modulation appearing on the input 

signal 

HARMONIC DISTORTION ............................................. Minus 20 dBc maximum at 250 watts 

THIRD ORDER INTERCEPT POINT .................................. 65 dBm typical 

RF POWER DISPLAY ...................................................... 0–750 watts full scale 

PRIMARY POWER .......................................................... 180–264 VAC 

 47–63 Hz, 2500 watts maximum @ 0.99 P.F. typical 

CONNECTORS 

 RF input ................................................................. See Model Configurations 

 RF output ............................................................... See Model Configurations 

 Forward Sample ..................................................... BNC female on front panel (coupling factor 60 dB typical; data supplied) 

 Reverse Sample ...................................................... BNC female on front panel (coupling factor 60 dB typical) 

 Safety Interlock ....................................................... 15 pin female Type D on rear panel 

 REMOTE CONTROL 

 IEEE-488 ............................................................ 24-pin female on rear panel 

 RS-232 .............................................................. 9 pin female Type D on rear panel 

 USB ................................................................... Type B female 

COOLING .................................................................... Forced air (self contained fans) 

WEIGHT, maximum ...................................................... 45.8 kg (101 lbs) 

SIZE (W x H x D) ............................................................ 50.3 x 41.9 x 56.9 cm (19.8 x 16.5 x 22.0 in) 

EXPORT CLASSIFICATION ............................................. EAR99