Keysight 489A Microwave TWT Amplifier

HP/Agilent 489A Microwave TWT Amplifier
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HP/Agilent 489A Microwave TWT Amplifier HP/Agilent 489A Microwave TWT Amplifier HP/Agilent 489A Microwave TWT Amplifier
Keysight 489A
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Manual Datasheet

The Keysight 489A Microwave TWT Amplifier covers the 1 to 2GHz frequency range with 1 W output and 30 dB gain. 

 

Features:

  • Input/output impedance is 50- ohms
  • Type N female connectors
  • Sensitivity: modulation input of >-20 V peak reduces RF output by >/=20 dB from DC to 50 kHz
  • Frequency response is DC to 500 kHz (3 dB)
  • Pulse response is <1 µs rise and fall times
  • Front-panel gain adjust
  • Cathode current meter
  • Modulation input


Specifications:

Frequency Range 1 to 2 GHz
Power Output 1 watt or greater with 1 mW or less input
Gain 30 dB or greater with 1 mW or less input
Gain Variation with Frequency: At 1 watt output 6 dB or less across the band
Small Signal 12 dB or less across the band;
5 dB or less across any 10% of band.
Gain Varation with Line Voltage: 1.0 dB or less for 10% variation from rated line voltage
Maximum RF input 100 mW
Input/Output Characteristics Impedance 50 ohms
SWR 2.5:1 or less (cold)
Connectors Type N Female
Input Impedance 100 k shunted by approximately 50 pF
Pulse Response Less than 1μ sec rise and fall times
Residual AM At least 45 dB below modulated output
Noise
Noise Figure 30 dB or less
Noise Power Output -10 dBm or less