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Horn Antenna FAQ's

As part of our commitment to provide you with information that adds value to your work, A.H. Systems is continuously producing articles and application notes on specific uses of our products. Our complete library of technical articles and application notes is available below for public use as an open reference for the RF engineering community. If you need information on a topic you don’t see here or you require additional technical support, we can help. Contact support to talk with one of our engineers for answers.

Common Questions

Attach the antenna to a tripod or mast with the 1/4-20 threaded hole in the mounting bracket. The location of the rear screw makes it easy to rotate the antenna from horizontal to vertical polarization. For horizontal polarization, mount the antenna such that the ridge guides and connector are parallel to the ground. For vertical polarization, mount the antenna such that the ridge guides are perpendicular to the ground.

The standard gain horn antennas come with a waveguide to coax right angle adapter and mounting block. Mounting the antenna so the RF connector is parallel to the ground will place the antenna in the horizontal polarity. Mounting the antenna with the RF connector facing perpendicular to the ground will place the antenna in the vertical polarity.

Yes, most standard gain horns will operate slightly below and well above their specified frequency range. Most of the standard gain horn antennas that we offer will have typical performance data (both Gain and VSWR) listed on the product page with typical data below and above the specified frequency range.

The calibration measurement point for all horn antennas is from the aperture or tip (nearest point) of the antenna.

For a standard 15 dBi gain horn antenna the typical half power beamwidth is about 30 degrees and the maximum coverage would be about 0.5 meter. Here is a Half Power Beamwidth Coverage Calculation tool to help calculate the maximum coverage that the antenna will cover from a specified distance.

There are several different types of horn antenna:
  • Pyramidal Horn Antenna (also known as Standard Gain Horn Antenna or Feed Horn Antenna)
  • Octave Horn
  • Ridge guide Horn (double and quad ridge)
  • Corrugated Horn Antenna
  • Sectoral Horn Antenna
  • Conical Horn Antenna
  • Exponential horn antenna
  • Scalar horn antenna

Yes, the standard gain horn series has a very precise and predictable performance (very little variation over its frequency range).

Yes, contact the factory with your requirements.

50-ohm and rated high enough in frequency to cover the operating band of the horn antenna. We offer a wide range of >RF test cable assemblies and RF Adapters that can be custom made to your specifications.

Because the horn antenna happens to be pointed at that motion detector on the wall behind you.
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