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General information

The PLT11-122S power amplifier operates at frequency of 81,25 MHz and it is rated for continuous duty at an RF output power of 1200 Watts. It is mainly designed as final power stage and it uses a single last generation LDMOS device capable of 1200 W RF output. The module is realized with a very compact layout to maximize the number of pallet in high power amplifiers and include the bias circuits, matching network and circuits for stabilization of the operating point. The configuration of the amplifier is a “push-pull” stage coupled by means of the combining network fully integrated in the RF block. This design allows obtaining broadband high efficiency and extremely low harmonic emissions.

Technical Specifications (th = 25 °C ; 50 OHm loaded ; Vdc = +50Vdc)

  • Output power : > 1200 W CW @1dB c.p.
  • Power Gain: > 23 dB (@ full power)
  • Input power: 5 W (nominal)
  • Frequency range: 81,25 MHz ±5MHz
  • Class operation: AB
  • Drain current: 32 typical
  • Drain efficiency: > 75% (@ 1200W CW; 1dB c.p.)
  • Input return loss: > 15 dB
  • Insertion phase variation: ±5° max typ.
  • Gain variation: ±0.5 dB max
  • Harmonic emissions: < 40dBc
  • Power supply requirement: 50Vdc ±2% ; 35A max.
  • Heat sink requirement : < 0.05 °C/W
  • Operating temperature : -5°C to +45°C
  • Heatsink temperature: -5°C to +75°C
  • Dimensions: 115 x 52 x 25mm
  • Weight: 250 gr


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