Amplifier Research 400A400A Amplifier : The Amplifier Research 400A400A is a self-contained, aircooled, 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 Amplifier Research 400A400A, when used with an RF sweep generator, will provide a minimum of 400 watts of swept power. The Amplifier Research 400A400A is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a color LCD touch screen and a single rotary knob to offer status reporting and control 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, pulse input capability, 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, RS-232 fiber optic, Ethernet, 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 switch on the front panel of the amplifier. High efficiency universal input, power factor corrected switching power supplies provides DC to all internal sub-assemblies. Housed in a stylish, contemporary enclosure, the Amplifier Research 400A400A 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. Functions and Specifications for the Amplifier Research 400A400A 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: ±3.0 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 upto 6.0:1 mismatch, above which may limit to 200W reflected power.Will operate without dam- age or oscillation with any magnitude andphase of source and load impedance. MODULATION CAPABILITY: Will faithfully reproduce AM, FM, orpulse 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     

• Amplifier Research 400A400A - Datasheet (124 kB)