Standard Gain Horn Antenna View More
Pyramidal Standard-Gain Horn antenna/ Standard-Gain Horns
Applications
Accurate antenna gain measurements are essential in a wide range of applications
such as satellite communications, remote sensing, electromagnetic compatibility measurements,
and radar.
To evaluate the gain of an antenna, it is customary to compare
its performance against a well-calibrated “standard.” So-called standard-gain horns are
used for this purpose.
A standard-gain horn antenna can be used to
1. standard for calibrating other antennas
2. feed for reflectors and lenses
3. pickup (probe) horn for sampling power
4. receiving and/or transmitting antenna.
What is Pyramidal Standard-Gain Horn antenna
The most common type of horn used as a standard-gain horn is the pyramidal horn
shown in the figure below
The rectangular geometry of this horn
enables easy manufacture and results in a low-cost antenna.
The key specifications to choose a standard-gain horn antenna
The fields radiated by a pyramidal horn
The fields radiated by a pyramidal horn, as given by the figure below, are valid for all angles of observation.
Directivity
Directivity is one of the parameters that is often used as a figure of merit to
describe the performance of an antenna. To find the directivity, the maximum radiation
is formed.
The overall performance of an antenna system can often be judged by its beamwidth
and/or its directivity.
Gain
Gains of the pyramidal horn which were measured, provided by RFecho, The amplitude patterns of the horn are shown in the figure below.
Part No. | Frequency Range(GHz | Gain(dB) | 3dB Beam Width | Waveguide | Material | Polarization | Impedance | Waveguide Size |
OLB-34-20 | 22.0-33.0 | 20 | H 18° / V 18° | WR34 | Cu | Linear | 50O | WR-34 Waveguide with UG-1530/U Flange |
OLB-34-25 | 22.0-33.0 | 25 | H 10° / V 10° | WR34 | Cu | Linear | 50O | WR-34 Waveguide with UG-1530/U Flange |
OLB-42-15 | 18.0-26.5 | 15 | H 30° / V 30° | WR42 | Cu | Linear | 50O | WR-42 Waveguide with UG-595/U Flange |
OLB-42-20 | 18.0-26.5 | 20 | H 18° / V 18° | WR42 | Cu | Linear | 50O | WR-42 Waveguide with UG-595/U Flange |
OLB-51-15 | 15.0-22.0 | 15 | H 30° / V 30° | WR51 | Cu | Linear | 50O | WR-51 Waveguide with UG-387/U Flange |
OLB-62-15 | 11.9-18.0 | 15 | H 30° / V 30° | WR62 | Cu | Linear | 50O | WR-62 Waveguide with UG-419/U Flange |
OLB-75-15 | 10.0-15.0 | 15 | H 30° / V 30° | WR75 | AI | Linear | 50O | WR-75 Waveguide with UG-387/U-M Flange |
OLB-75-20 | 10.0-15.0 | 20 | H 18° / V 18° | WR75 | AI | Linear | 50O | WR-75 Waveguide with UG-387/U-M Flange |
OLB-90-15 | 8.2-12.5 | 15 | H 30° / V 30° | WR95 | AI | Linear | 50O | WR-90 Waveguide with UG-39/U Flange |
OLB-90-20 | 8.2-12.5 | 20 | H 18° / V 18° | WR95 | AI | Linear | 50O | WR-90 Waveguide with UG-39/U Flange |
OLB-112-15 | 7.5-10.0 | 15 | H 30° / V 30° | WR112 | AI | Linear | 50O | WR-112 Waveguide with PDF84 |
OLB-137-10 | 5.85-8.20 | 10 | H 55° / V 55° | WR137 | AI | Linear | 50O | WR-137 Waveguide with PDF70 |
OLB-137-15 | 5.85-8.20 | 15 | H 30° / V 30° | WR137 | AI | Linear | 50O | WR-137 Waveguide with PDF70 |
OLB-137-20 | 5.85-8.20 | 20 | H 18° / V 18° | WR137 | AI | Linear | 50O | WR-137 Waveguide with PDF70 |
OLB-159-10 | 4.90-7.05 | 10 | H 55° / V 55° | WR159 | AI | Linear | 50O | WR-159 Waveguide with PDF58 |
OLB-159-15 | 4.90-7.05 | 15 | H 30° / V 30° | WR159 | AI | Linear | 50O | WR-159 Waveguide with PDF58 |
OLB-159-20 | 4.90-7.05 | 20 | H 18° / V 18° | WR159 | AI | Linear | 50O | WR-159 Waveguide with PDF58 |
OLB-187-20 | 3.95-5.85 | 20 | H 18° / V 18° | WR187 | AI | Linear | 50O | WR-187 Waveguide with PDF48 |
OLB-284-15 | 2.60-3.95 | 15 | H 30° / V 30 | WR284 | AI | Linear | 50O | WR-284 Waveguide with PDF32 |
OLB-284-20 | 2.60-3.95 | 20 | H 18° / V 18° | WR284 | AI | Linear | 50O | WR-284 Waveguide with PDF32 |
OLB-340-10 | 2.20-3.30 | 10 | H 55° / V 55° | WR340 | AI | Linear | 50O | WR-340 Waveguide with PDF26 |
OLB-340-20 | 2.20-3.30 | 20 | H 18° / V 18° | WR340 | AI | Linear | 50O | WR-340 Waveguide with PDF26 |
OLB-430-15 | 1.72-2.61 | 15 | H 30° / V 30° | WR430 | AI | Linear | 50O | WR-430 Waveguide with PDF22 |
OLB-430-20 | 1.72-2.61 | 20 | H 18° / V 18° | WR430 | AI | Linear | 50O | WR-430 Waveguide with PDF22 |
OLB-650-15 | 1.12-1.17 | 15 | H 30° / V 30° | WR650 | AI | Linear | 50O | WR-650 Waveguide with PDF14 |
OLB-770-15 | 0.96-1.45 | 15 | H 30° / V 30° | WR770 | AI | Linear | 50O | WR770 Waveguide with PDF12 |