horn antenna

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

horn antenna

See waveguide.

Horn Antenna


an antenna consisting of a widening metal funnel—the horn—and a wave guide coupled to it. Horn antennas are used for the directional radiation and reception of radio waves in the superhigh-frequency range and as radiators for lens and reflector antennas; they are also used as self-contained antennas in communications satellites and in equipment used in measurement technology. The radiation pattern of a horn antenna depends on the character of the field strength distribution at the mouth (the largest cross section) of the horn, which, in turn, is determined by the shape of the inner and outer surfaces of the horn and by the horn’s geometric dimensions.

Figure 1. Types of horn antennas: (a) pyramidal, (b) sectoral, (c) conical, (d) horn with a parabolic generatrix; (1) wave guide, (2) horn

Horns are classified according to shape as pyramidal (Figure 1, a), sectoral (Figure 1, b), and conical (Figure l, c). Others are versions of these three basic types and include, for example, antennas with a generatrix in the form of a broken line or a smooth curve and antennas with a smooth or a corrugated inner surface. Various versions are used to improve one or another of the antenna’s electrical characteristics, for example, to obtain a radiation pattern that is axially symmetrical or has low power levels in the side lobes. In some cases, a delay or accelerating lens is placed at the mouth of a horn antenna in order to correct the antenna’s directional properties (seeLENS ANTENNA). For the best match between a horn antenna and its wave guide and between the antenna and free space, a matching section and tuning elements are sometimes provided, and the surface of the horn has a parabolic generatrix (Figure 1, d).


Aizenberg, G. Z. Antenny uïtrakorotkikh voln [part 1]. Moscow, 1957.
Fradin, A. Z. Antenny sverkhvysokikh chastot. Moscow, 1957.
Kühn, R. Mikrovolnovye antenny. [Leningrad] 1967. [Translated from German.]


horn antenna

[′hȯrn an′ten·ə]
A microwave antenna produced by flaring out the end of a circular or rectangular waveguide into the shape of a horn, for radiating radio waves directly into space. Also known as electromagnetic horn; flare (British usage); hoghorn antenna (British usage); horn; horn radiator.
References in periodicals archive ?
Tenders are invited for Supply of Advanced Microwave Bench (Klystron),Polar Pattern and Gain Characteris tics of Horn Antenna Module,MagicTee/Directional Coupler/Isolator/Attenuator/ Circulator Module.
a preeminent supplier of on-demand microwave and RF components, today announced the expansion of their standard gain horn antenna lines aimed to provide engineers with a complete and comprehensive selection of components for various calibration and testing applications.
Back in 1964, Arno Penzias and Robert Wilson were conducting experiments with the Holmdel Horn Antenna, an extremely sensitive device originally used to detect radio waves that were bounced off Echo balloon satellites, and later the Telstar, the first active communications satellite.
To detect obrusnE'ch layers are required Horn Antenna and Ground Coupled Antenna, diagnostic core groud Coupled Antenna.
The receiver subsystem, supplied by Broadcast Microwave Services, features a small tripod-mounted broad beam horn antenna and receiver.
Now, with its state-of-the-art data-collection network in place, and a new Gregorian horn antenna, Arecibo will continue to be on the cutting edge of space exploration, acting as a magnet to draw the world's leading scientists to do what can't be done anywhere else on earth.
The FMR 230 V features a horn antenna and is available in a high-temperature model that withstands temperatures of up to 662[degrees]F and pressures up to 928 psig.
A single horn antenna is used for both transmitting and receiving the radar pulses.
She uses a 1- to 20-GHz high-frequency horn antenna to heat objects then view them with an infrared sensor that relays data to a Computer.
suppliers are currently offering high-gain (23 dBi) horn antenna s for smaller satellites however low weight pointing mechanisms ( T29157780.
This increase in power allows the amplifier to run an entire 600 V/m @ 1m radar pulse test using a single horn antenna.
Design and optimization of a new double ridged guide horn antenna," Journal of Electromagnetic Wave and Applications, 21(4): 501-516.