WR-1.5 Standard Gain Horn Antenna 500-750 GHz, 25 dBi

May 09, 2026

WR-1.5 Standard Gain Horn Antenna 500-750 GHz, 25 dBi

WR-1.5 Standard Gain Horn Antenna for 500-750 GHz Sub-THz Applications

The new AT-SGA-25-1.5B from AT Microwave is a precision-engineered standard gain horn antenna covering the full WR-1.5 waveguide band from 500 to 750 GHz. With a typical gain of 25 dBi, linear polarization and a symmetric 10 degree beamwidth in both E- and H-planes, this gold-plated horn antenna is purpose-built for the most demanding sub-THz test setups, antenna calibration tasks and millimeter-wave system characterization.

As reliable, off-the-shelf components above 500 GHz remain rare on the European market, the AT-SGA-25-1.5B closes a critical gap for engineering teams developing next-generation 6G research, sub-THz radar imaging and submillimeter-wave instrumentation. The horn ships with a high-precision UG-387/U-M anti-cocking flange ensuring repeatable, low-loss waveguide connections.

Technical Specifications

  • Frequency Range: 500 - 750 GHz (full WR-1.5 band)
  • Typical Gain: 25 dBi
  • Polarization: Linear
  • 3 dB Beamwidth (E-/H-Plane): 10 degree / 10 degree
  • VSWR: 1.5 : 1 (max)
  • Side Lobe Level @ 625 GHz: -11.9 dB (E) / -28.1 dB (H)
  • Waveguide Interface: WR-1.5 with UG-387/U-M anti-cocking flange
  • Material and Finish: Brass body, high-precision gold plating

Typical Applications

  • Antenna Gain Testing and Calibration: Reference standard for sub-THz antenna characterization and far-field measurement
  • mmWave and 6G Research: Link budget validation, channel sounding and propagation studies above 500 GHz
  • FOD Detection Systems: Sub-THz radar imaging for foreign object debris detection
  • System-Level Test Setups: VNA-extender feeds, OTA test chambers and beam-pattern measurement
  • Defense, SATCOM and Research: D-band, G-band and beyond, including ISAC, sensing, and university THz laboratories

Available Through bq-microwave

As the official European distributor for AT Microwave, bq-microwave offers the complete sub-THz standard gain horn antenna portfolio from WR75 to WR-1.5. We deliver across Europe (excluding the United Kingdom) with technical pre-sales support and short lead times. For pricing, lead time, technical questions or quotation requests, contact our team at info@bq-microwave.de.

Product Data Sheet
Technical specifications as PDF
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