Com-Power Double Ridged Waveguide Antenna (Built-in Preamplifier)

The AHA-840 waveguide antenna smartly incorporates a double ridged waveguide horn antenna with precision waveguide to coaxial adapter and a high-gain, low noise preamplifier, integrated into a single antenna.
Article number:
In stock
Delivery time:
7 - 12 days
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The AHA-840 double ridged waveguide 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.

The RF connection between the waveguide antenna output connector and preamplifier input is made externally via a short, high quality coaxial cable assembly. The accessibility of these connection points allows the insertion of attenuation pads, band pass filters, notch filters, etc., as needed, between the horn antenna and preamplifier, which is not possible with other antennas of this type available on the market.

This test equipment arrangement, with the placement of the preamplifier near the antenna, rather than next to (or embedded into) the test receiver, increases measurement accuracy by amplifying the received signals prior to being significantly attenuated by the long cable run between the test site and test equipment area. The gain of the preamplifier intentionally increases with frequency at about the same slope as the antenna factor of the horn vs frequency, resulting in a relatively flat active antenna factor over the frequency range.

  • Frequency range: 18 GHz to 40 GHz
  • Built-in Preamplifier increases Sensitivity
  • Low Antenna Factor
  • Emissions & Immunity capability
  • Individual calibration included
  • Three Year Warranty

Waveguide Horn Antenna AHA-840 - Antenna factors

Model Frequency Range Antenna Factors
AHA-840 18 GHz - 40 GHz
Manufacturer: Com-Power
Model: AHA-840
Product Name: Double Ridged Waveguide Horn Antenna (Built-in Preamplifier)
Frequency Range: 18 GHz to 40 GHz
Polarization: Linear
VSWR - Antenna port: 1.4 : 1 (average)
P out @ 1 dB Compression: > 10 dBm
Noise Figure: < 6 dB
Preamplifier Gain: 37 to 43 dB
Connector Types: 50 Ω [2.92mm] "K type" female (for all RF connections)
Specifications: FCC, CISPR, EN, ETSI, FAA, Mil-Std, Automotive, etc.
Dimensions (H x W x D): 26 x 21.7 x 15 cm [10.2" x 8.5" x 5.9"]
Weight: 0.68 kg [1.5 lbs.]
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