Double Ridge Active Horn Antenna


18 - 40 GHz

Horn Antenna with Built in Preamplifier


The AHA-840 Active Horn Antenna is part of Com-Power’s extensive line of EMC test antennas. The AHA-840 smartly incorporates a broadband, double ridged waveguide horn antenna with precision waveguide to coaxial adapter (meticulously tuned as a set for optimum VSWR performance and impedance matching) and a broadband, high-gain, low noise preamplifier; integrated into a single, well-built, durable, custom designed assembly which facilitates the flexibility to be configured for almost any application.

  • Broadband - 18 GHz to 40 GHz
  • Built-in Preamplifier Increases Sensitivity
  • Low Antenna Factor
  • Emissions & Immunity Capability
  • Individual Calibration Included
  • FCC, CISPR, EN, ETSI, FAA, Mil-Std, Automotive etc.
  • Frequency Range: 18 GHz to 40 GHz
  • Polarization: Linear
  • VSWR - Antenna Port: 1.4:1 average (see graph below)
  • P(out) @ 1 dB Compression: >10 dBm
  • Noise Figure: < 6 dB
  • Active Antenna Gain: > 55 dBi
  • Preamplifier Gain: 37 to 43 dB (see graph below)
  • Dimensions: 10.2” x 8.5” x 5.9” (26 cm x 21.7 cm x 15 cm)
  • Weight: 1.5 lbs (0.68 kg)
  • Connector Types: 50Ω [2.92mm] “K type” female (for all RF connections)

  • Active Antenna Factors / Gain

    Antenna Factors / Gain

    (not including preamplifier gain)

    Preamplifier Gain

    VSWR / Return Loss

    Field Strength - 200W input power

    (directly to waveguide input - waveguide to coaxial adapter removed)

    Field Strength - 10W input power

    (to 2.92mm input of waveguide to coaxial adapter)