Standard Gain Horn Antenna-WG Port
Standard Gain Horn Antenna provides stable gain, predictable radiation patterns and wide frequency coverage for antenna measurements and RF calibration. Widely used in radar systems, satellite communication, antenna testing laboratories, EMC measurements, RF chambers and microwave research environments.
Standard Gain Horn Antennas with Direct Waveguide Flange Ports
AO Microwave’s high-precision standard gain horn antennas with waveguide ports are designed to radiate microwave and millimeter-wave energy with a highly predictable gain and linear polarization. Fabricated from premium aluminum and copper-alloy sheets via无缝 precision-electroforming or CNC-milling processes, these pyramidal horns feature silver-plated internal walls and gold-plated flange surfaces to minimize insertion loss. Operating up to 110 GHz (WR-90 to WR-10), our horn antennas provide standard gain values of 10, 15, 20, or 25 dBi, a low typical input VSWR of < 1.15:1, and excellent cross-polarization isolation of typically > 35 dB across the band.
By feeding the horn directly from waveguide runs (with no coaxial transition), our waveguide-port antennas eliminate coaxial insertion losses and maximize power handling. They are critical for high-power radiation sourcing, antenna gain measurements, and far-field calibration ranges.
| Part No | Frequency/GHz | VSWR (Max) | Gain/dB (Avg) | E Plane 3dB Beamwidth (Typ) | H Plane 3dB Beamwidth (Typ) | Polarization | Interface Type |
|---|---|---|---|---|---|---|---|
| AO770-SGAH10 | 0.96-1.46 | 1.25 | 10 | 50° | 50° | Linear | UDR12 |
| AO650-SGAH10 | 1.13-1.73 | 1.25 | 10 | 50° | 50° | Linear | UDR14 |
| AO510-SGAH10 | 1.45-2.20 | 1.25 | 10 | 50° | 50° | Linear | UDR18 |
| AO430-SGAH10 | 1.72-2.61 | 1.25 | 10 | 50° | 50° | Linear | UDR22 |
| AO340-SGAH10 | 2.17-3.30 | 1.25 | 10 | 50° | 50° | Linear | UDR26 |
| AO284-SGAH10 | 2.60-3.95 | 1.25 | 10 | 50° | 50° | Linear | UDR32 |
| AO229-SGAH10 | 3.22-4.90 | 1.25 | 10 | 50° | 50° | Linear | UDR40 |
| AO187-SGAH10 | 3.94-5.99 | 1.25 | 10 | 50° | 50° | Linear | UDR48 |
| AO159-SGAH10 | 4.64-7.05 | 1.25 | 10 | 50° | 50° | Linear | UDR58 |
| AO137-SGAH10 | 5.38-8.17 | 1.25 | 10 | 50° | 50° | Linear | UDR70 |
| AO112-SGAH10 | 6.57-9.99 | 1.25 | 10 | 50° | 50° | Linear | UBR84 |
| AO90-SGAH10 | 8.20-12.5 | 1.25 | 10 | 50° | 50° | Linear | UBR100 |
| AO75-SGAH10 | 9.84-15.0 | 1.25 | 10 | 50° | 50° | Linear | UBR120 |
| AO62-SGAH10 | 11.9-18.0 | 1.25 | 10 | 50° | 50° | Linear | UBR140 |
| AO51-SGAH10 | 14.5-22.0 | 1.25 | 10 | 50° | 50° | Linear | UBR180 |
| AO42-SGAH10 | 17.6-26.7 | 1.25 | 10 | 50° | 50° | Linear | UBR220 |
| AO34-SGAH10 | 21.7-33.0 | 1.25 | 10 | 50° | 50° | Linear | UBR260 |
| AO28-SGAH10 | 26.5-40.0 | 1.25 | 10 | 50° | 50° | Linear | UBR320 |
| AO22-SGAH10 | 33.0-50.0 | 1.25 | 10 | 50° | 50° | Linear | UG-383/U |
| AO19-SGAH10 | 40.0-60.0 | 1.25 | 10 | 50° | 50° | Linear | UG383/UM |
| AO15-SGAH10 | 50.0-75.0 | 1.25 | 10 | 50° | 50° | Linear | UG385/U |
| AO12-SGAH10 | 60.0-90.0 | 1.25 | 10 | 50° | 50° | Linear | UG-387/U |
| AO10-SGAH10 | 75.0-110.0 | 1.25 | 10 | 50° | 50° | Linear | UG387/UM |
| AO770-SGAH15 | 0.96-1.46 | 1.25 | 15 | 30° | 30° | Linear | UDR12 |
| AO650-SGAH15 | 1.13-1.73 | 1.25 | 15 | 30° | 30° | Linear | UDR14 |
| AO510-SGAH15 | 1.45-2.20 | 1.25 | 15 | 30° | 30° | Linear | UDR18 |
| AO430-SGAH15 | 1.72-2.61 | 1.25 | 15 | 30° | 30° | Linear | UDR22 |
| AO340-SGAH15 | 2.17-3.30 | 1.25 | 15 | 30° | 30° | Linear | UDR26 |
| AO284-SGAH15 | 2.60-3.95 | 1.25 | 15 | 30° | 30° | Linear | UDR32 |
| AO229-SGAH15 | 3.22-4.90 | 1.25 | 15 | 30° | 30° | Linear | UDR40 |
| AO187-SGAH15 | 3.94-5.99 | 1.25 | 15 | 30° | 30° | Linear | UDR48 |
| AO159-SGAH15 | 4.64-7.05 | 1.25 | 15 | 30° | 30° | Linear | UDR58 |
| AO137-SGAH15 | 5.38-8.17 | 1.25 | 15 | 30° | 30° | Linear | UDR70 |
| AO112-SGAH15 | 6.57-9.99 | 1.25 | 15 | 30° | 30° | Linear | UBR84 |
| AO90-SGAH15 | 8.20-12.5 | 1.25 | 15 | 30° | 30° | Linear | UBR100 |
| AO75-SGAH15 | 9.84-15.0 | 1.25 | 15 | 30° | 30° | Linear | UBR120 |
| AO62-SGAH15 | 11.9-18.0 | 1.25 | 15 | 30° | 30° | Linear | UBR140 |
| AO51-SGAH15 | 14.5-22.0 | 1.25 | 15 | 30° | 30° | Linear | UBR180 |
| AO42-SGAH15 | 17.6-26.7 | 1.25 | 15 | 30° | 30° | Linear | UBR220 |
| AO34-SGAH15 | 21.7-33.0 | 1.25 | 15 | 30° | 30° | Linear | UBR260 |
| AO28-SGAH15 | 26.5-40.0 | 1.25 | 15 | 30° | 30° | Linear | UBR320 |
| AO22-SGAH15 | 33.0-50.0 | 1.25 | 15 | 30° | 30° | Linear | UG-383/U |
| AO19-SGAH15 | 40.0-60.0 | 1.25 | 15 | 30° | 30° | Linear | UG383/UM |
| AO15-SGAH15 | 50.0-75.0 | 1.25 | 15 | 30° | 30° | Linear | UG385/U |
| AO12-SGAH15 | 60.0-90.0 | 1.25 | 15 | 30° | 30° | Linear | UG-387/U |
| AO10-SGAH15 | 75.0-110.0 | 1.25 | 15 | 30° | 30° | Linear | UG387/UM |
| AO284-SGAH20 | 2.60-3.95 | 1.25 | 20 | 18° | 18° | Linear | UDR32 |
| AO229-SGAH20 | 3.22-4.90 | 1.25 | 20 | 18° | 18° | Linear | UDR40 |
| AO187-SGAH20 | 3.94-5.99 | 1.25 | 20 | 18° | 18° | Linear | UDR48 |
| AO159-SGAH20 | 4.64-7.05 | 1.25 | 20 | 18° | 18° | Linear | UDR58 |
| AO137-SGAH20 | 5.38-8.17 | 1.25 | 20 | 18° | 18° | Linear | UDR70 |
| AO112-SGAH20 | 6.57-9.99 | 1.25 | 20 | 18° | 18° | Linear | UBR84 |
| AO90-SGAH20 | 8.20-12.5 | 1.25 | 20 | 18° | 18° | Linear | UBR100 |
| AO75-SGAH20 | 9.84-15.0 | 1.25 | 20 | 18° | 18° | Linear | UBR120 |
| AO62-SGAH20 | 11.9-18.0 | 1.25 | 20 | 18° | 18° | Linear | UBR140 |
| AO51-SGAH20 | 14.5-22.0 | 1.25 | 20 | 18° | 18° | Linear | UBR180 |
| AO42-SGAH20 | 17.6-26.7 | 1.25 | 20 | 18° | 18° | Linear | UBR220 |
| AO34-SGAH20 | 21.7-33.0 | 1.25 | 20 | 18° | 18° | Linear | UBR260 |
| AO28-SGAH20 | 26.5-40.0 | 1.25 | 20 | 18° | 18° | Linear | UBR320 |
| AO22-SGAH20 | 33.0-50.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/U |
| AO19-SGAH20 | 40.0-60.0 | 1.25 | 20 | 18° | 18° | Linear | UG383/UM |
| AO15-SGAH20 | 50.0-75.0 | 1.25 | 20 | 18° | 18° | Linear | UG385/U |
| AO12-SGAH20 | 60.0-90.0 | 1.25 | 20 | 18° | 18° | Linear | UG-387/U |
| AO10-SGAH20 | 75.0-110.0 | 1.25 | 20 | 18° | 18° | Linear | UG387/UM |
| AO8-SGAH20 | 92.2-140.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/UM |
| AO6-SGAH20 | 113.0-173.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/UM |
| AO5-SGAH20 | 145.0-220.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/UM |
| AO4-SGAH20 | 172.0-261.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/UM |
| AO3-SGAH20 | 217.0-330.0 | 1.25 | 20 | 18° | 18° | Linear | UG-383/UM |
| AO90-SGAH25 | 8.20-12.5 | 1.25 | 25 | 10° | 10° | Linear | UBR100 |
| AO75-SGAH25 | 9.84-15.0 | 1.25 | 25 | 10° | 10° | Linear | UBR120 |
| AO62-SGAH25 | 11.9-18.0 | 1.25 | 25 | 10° | 10° | Linear | UBR140 |
| AO51-SGAH25 | 14.5-22.0 | 1.25 | 25 | 10° | 10° | Linear | UBR180 |
| AO42-SGAH25 | 17.6-26.7 | 1.25 | 25 | 10° | 10° | Linear | UBR220 |
| AO34-SGAH25 | 21.7-33.0 | 1.25 | 25 | 10° | 10° | Linear | UBR260 |
| AO28-SGAH25 | 26.5-40.0 | 1.25 | 25 | 10° | 10° | Linear | UBR320 |
| AO22-SGAH25 | 33.0-50.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/U |
| AO19-SGAH25 | 40.0-60.0 | 1.25 | 25 | 10° | 10° | Linear | UG383/UM |
| AO15-SGAH25 | 50.0-75.0 | 1.25 | 25 | 10° | 10° | Linear | UG385/U |
| AO12-SGAH25 | 60.0-90.0 | 1.25 | 25 | 10° | 10° | Linear | UG-387/U |
| AO10-SGAH25 | 75.0-110.0 | 1.25 | 25 | 10° | 10° | Linear | UG387/UM |
| AO8-SGAH25 | 92.2-140.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/UM |
| AO6-SGAH25 | 113.0-173.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/UM |
| AO5-SGAH25 | 145.0-220.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/UM |
| AO4-SGAH25 | 172.0-261.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/UM |
| AO3-SGAH25 | 217.0-330.0 | 1.25 | 25 | 10° | 10° | Linear | UG-383/UM |
Understanding Waveguide Feeding & Flare Aperture Sizing
Standard gain horn antennas operate by gradually expanding the dimensions of the input waveguide (the flare) to match the impedance of free space (377 ohms). Pyramidal horns expand in both the E-plane and H-plane, allowing for a highly directional, linearly polarized beam.
By utilizing a direct waveguide flange port, our horn antennas maintain the physical and electrical continuity of the waveguide runs. This design prevents the insertion loss and peak-power limits introduced by waveguide-to-coaxial transitions, allowing the horn to handle high power levels. It is suitable for high-power radiation sourcing and precision calibration ranges where coaxial cables degrade performance.
Target Applications & Operational Advantages
By providing predictable radiation patterns and high power handling, our waveguide-port standard gain horn antennas secure critical measurement setups:
Far-Field Gain Calibration
Function: Serves as the primary 100% calibrated reference standard for determining the gain of other antennas under test (AUT) in far-field ranges.
Advantage: Symmetrical housing machining and low-expansion materials maintain gain values within ±0.5 dB, ensuring accurate, repeatable references.
High-Power Electromagnetic Sourcing
Function: Radiates high-power microwave pulses in electromagnetic vulnerability (EMV) and shielding effectiveness tests.
Advantage: Eliminates coaxial transitions to handle high peak powers, preventing voltage breakdown and arcing inside the horn cavity.
VNA System Calibration References
Function: Provides highly repeatable reflection and transmission references in anechoic chambers.
Advantage: Tight mechanical alignment and low VSWR (<1.15) minimize measurement drift across full frequency sweeps.
Waveguide-Port Standard Gain Horn FAQs
Need high-performance Waveguide-Port Standard Gain Horns?
Specify your WR size, nominal gain (10/15/20/25 dBi), and flange style — we'll quote in 24 hours.
