Amplifier Research 120S4G8 Solid State Amplifier 4 GHz – 8 GHz 120W

Description

Amplifier Research 120S4G8 is a portable, self-contained, air-cooled, broadband, completely solid-state amplifier designed for applications where instantaneous bandwidth, high gain and linearity are required.

The Model 120S4G8, when used with a sweep generator, will provide a minimum of 120 watts of RF power instantaneously from 4 to 8 GHz.

The Model 120S4G8 is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a graphic Liquid Crystal Display, menu assigned softkeys, a single rotary knob, and a dedicated power on/off switch 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, internal/external automatic level control (ALC) with front panel control of the ALC threshold, pulse input capability and RF output level protection. Also included is an internal RF detector which provides an output for use in self-testing or operational modes. All amplifier control functions and status indications are available remotely in GPIB/IEEE-488 format, RS-232 hardwire and fiber optic, USB, and Ethernet. The bus interface connector is 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.

The Model 120S4G8 is designed to have low spurious signals, linearity and is extremely load tolerant which enables it to be used in many RF applications such as: RF susceptibility testing, antenna/component testing, and communication technology testing. It can be used as a test instrument covering multiple frequency bands and is suitable for a variety of communication technologies such as CDMA, W-CDMA, TDMA, GSM, UWB, WiMAX etc.

The 120S4G8 is part of AR’s Expandable Power concept, which gives the amplifier much more versatility. The 120S4G8 consists of four 35S4G8A sub-amplifiers housed in a single equipment rack with a controller. The 120S4G8 can function as one amplifier or be separated and operate as four separate 35S4G8A amplifiers which can be used independently.

 

Features

  • Broadband
  • Solid State Broadband
  • Gain Control
  • Mismatch Tolerant
  • Modulation Capability
  • Digital Control Panel
  • Automatic Primary Power Selection
  • RF Input Leveling Circuit – Overdrive Protection
  • Over Temperature Protection
  • Standard Remote Interfaces
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Specifications

RATED POWER OUTPUT

120 watts minimum

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum, 0 dBm

POWER OUTPUT @ 3dB COMPRESSION

Nominal

135 watts

Minimum

120 watts

POWER OUTPUT @ 1dB COMPRESSION

Nominal

120 watts

Minimum

100 watts

FLATNESS

±1.5 dB typical

±2.5 dB maximum

FREQUENCY RESPONSE

4-8 GHz instantaneously

GAIN (at maximum setting)

50.8 dB minimum

GAIN ADJUSTMENT (Continuous Range)

15 dB minimum

INPUT IMPEDANCE

50 ohms, VSWR 2.5:1 maximum

OUTPUT IMPEDANCE

50 ohms, nominal

MISMATCH TOLERANCE

100% of rated power without foldback. 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 120 watts

THIRD ORDER INTERCEPT POINT

58 dBm typical

RF POWER DISPLAY

Digital, forward, and reflected

PRIMARY POWER

(selected automatically)

90-132, 180-264 VAC

50/60 Hz, single phase

<2200 watts maximum

CONNECTORS

RF INPUT

Type N female on front panel

RF OUTPUT

Type N female on rear panel

External Leveling Inputs

Type BNC female on front panel

Pulse Modulation Input

Type BNC female on front panel

Detected RF Output

Type BNC female on front panel

REMOTE INTERFACES

IEEE-488

24 pin female

RS-232

9 pin Subminiature D (female)

RS-232 (Fiber-optic)

Type ST

USB 2.0

Type B

Ethernet

RJ-45

SAFETY INTERLOCK

15 Pin Subminiature D

COOLING

Forced air (self contained fans)

SIZE (W x H x D)

56.1 x 152.4 x 67.1 cm, 22.1 x 60.0 x 26.4 in

WEIGHT (approximate)

172.4 kg (380 lbs)

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