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Amplifier Research 25S1G4
Microwave Amplifer, 0.8 - 4.2 GHz, 25W

Amplifiers - RF and Microwave >> Above 1 GHz and 100W or Less >> Microwave Amplifer, 0.8 - 4.2 GHz, 25W
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Manufacturer: Amplifier Research
Model: 25S1G4

Amplifier Research 25S1G4 Microwave Amplifer, 0.8 - 4.2 GHz, 25W

Electronic Test and Measurement Equipment

Amplifier Research 25S1G4 Microwave Amplifer, 0.8 - 4.2 GHz, 25W Product Datasheet Download Product Datasheet

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Product Overview

The Amplifier Research 25S1G4 is a solid state, self-contained, air-cooled, broadband amplifier designed for applications where instantaneous bandwidth, high gain and linearity are required. Housed in a stylish contemporary cabinet, the unit is designed for benchtop use, but can be removed from the cabinet for immediate equipment rack mounting.

The AR 25S1G4, when used with a sweep generator, will provide a minimum of 25 watts of RF power. Included is a front panel gain control which permits the operator to conveniently set the desired output level. The Amplifier Research 25S1G4 is protected from RF input overdrive by an RF input leveling circuit which controls the RF input level to the RF amplifier first stage when the RF input level is increased above 0 dBm. The RF amplifier stages are protected from over-temperature by removing the DC voltage to them if an over-temperature condition occurs due to cooling blockage or fan failure. There is a digital display on the front panel to indicate the operate status and fault conditions if an over-temperature or power supply fault has occurred. The unit can be returned to operate when the condition has been cleared. The 25S1G4 digital panel provides control of all amplifier functions both locally and remotely via IEEE-488 (GPIB) or RS-232 interfaces.

The low level of spurious signals and linearity of the Model 25S1G4A make it ideal for use as a driver amplifier in testing wireless and communication components and subsystems. 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 etc. It is also suitable for EMC Test applications where undistorted modulation envelopes are desired. 3RD ORDER INTERCEPT POINT (dBm)

Specifications of the AR 25S1G4 Amplifer:

  • RATED POWER OUTPUT: 25 watts minimum
  • INPUT FOR RATED OUTPUT: 1.0 milliwatt maximum
    • Nominal: 32 watts
    • Minimum: 25 watts
    • Nominal: 27 watts
    • Minimum: 20 watts
  • 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: 100% of rated power without foldback. Will operate without damage or oscillation with any magnitude and phase of source and load impedance. (See Application Note #27)
  • MODULATION CAPABILITY: Will faithfully reproduce AM, FM, or pulse Modulation appearing on the input signal
  • THIRD ORDER INTERCEPT: .See chart. The third order intercept points for this chart have been determined using two tones spaced 1 MHz apart. This is typical for WCDMA systems. Closer tone spacing such as 60 kHz generally provides about a 1db to 3db improvement in the IP.
  • HARMONIC DISTORTION: Minus 20 dbc, max at 20 watts
  • SPURIOUS: Minus 73 dbc Typ.
  • PHASE LINEARITY: ± 1.0 deg/100 MHz, Typ
  • PRIMARY POWER: (Selected Automatically)
    • 90-132, 180-264 VAC
    • 50/60 Hz, single phase
    • 340 watts maximum
  • CONNECTORS RF: Type N female
    • IEEE-488: 24 pin female
    • RS-232: 9 pin Subminiature D (female)
  • SAFETY INTERLOCK: 15 pin Subminiature D
  • COOLING: Forced air (self contained fans)

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