Custom Horn Antennas
Steatite provides a custom design horn antenna capability, providing a flexible and responsive microwave engineering approach to satisfy customer specific horn antenna requirements.
Lensed Horns produce an improved gain figure, ideal for materials testing where a high field strength is achievable over the desired spot size, and may be an alternative to a reflector antenna solution. A lens may be retrofitted to existing horns are useful for EMC / HiRF measurement systems. Lensed horns provide lower back-scatter and improved sidelobe performance. Applications include: Radar Systems, EMC testing, Point-to-Point communication links, Traffic control systems and many others.
Hog Horns can be a useful compact and rigid alternative for sectoral horns and standard pyramidal horns. One of the better known applications of a Hog (or Hogg) horn is by Bell Telephone Laboratories where they 'accidentally' discovered microwave background radiation existing when they were pointing to the sky, this provided support for the Big Bang theory and in 1978 Penzias and Wilson received the Nobel Peace Prize for their momentous discovery. The distinctive shape of the hog horn can be an advantage for many applications, especially where space-saving is important.
Dielectric Filled Horns have the advantage of providing operation as a horn antenna but at a lower frequency than the physical size of the antenna would suggest. Filling with dielectric material may also be beneficial for matching an antenna that is designed to launch microwaves into a medium other than free-space. The trade-off for size reduction using dielectric filling, is greater losses in the dielectric material reducing gain and limiting to lower power usage. Steatite has designed many dielectric filled antennas, mostly in the standard waveguide sizes, however many variants may be considered.
Sectoral Horns give a larger beamwidth in one plane in comparison to the other plane where it is very narrow. This is desirable in many applications such as in broadcasting where a few sectoral horns may be arranged, back to back, to cover 360 degrees in azimuth. A fan beam enables the concentration of microwave energy in a fan pattern, as the name suggests, without wasting energy in the orthogonal plane where coverage is not needed. Sectoral horns may be designed for all standard waveguide sizes and also encompasses ridged wideband designs. The 'flare' may be designed to be an E-plane or H-plane flare.
Low Sidelobe Diagonal Horns may be useful to provide a solution when high gain and low sidelobes are required from an antenna. One major application is in radiometry work where the noise temperature of a target has to be measured with minimal contribution from sources outside the main beam, which may often be at a higher intensity than at the main beam. Generally Gaussian or corrugated horns are considered for this task however they may be expensive and of restricted bandwidth, both factors arising from the horn's complex internal structure. Diagonal horns give a very similar level of performance but are simpler to make and have a wider bandwidth.
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To find out more about Steatite Antennas or discuss specific requirements please contact on +44(0)1568 617920, or email firstname.lastname@example.org
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