RM-SGHA159-10 Standard Gain Horn Antenna for Reliable 4.90–7.05 GHz RF Measurement

Reliable antenna measurements begin with a reference antenna that provides predictable gain, stable matching, and clearly defined radiation characteristics. RF MISO’s RM-SGHA159-10 Standard Gain Horn Antenna is designed for professional RF testing across the 4.90–7.05 GHz frequency range, offering a practical solution for antenna laboratories, communication-system evaluation, radar testing, and general microwave measurement applications.

Operating with a WR159 waveguide, the RM-SGHA159-10 provides 10 dBi typical gain and linear polarization. Its balanced beam characteristics—with typical 3 dB beamwidths of 51.6° in the E-plane and 52.1° in the H-plane—support controlled illumination and repeatable measurements. This near-symmetrical beam behavior is particularly useful when engineers need consistent coverage in antenna ranges, anechoic chambers, or comparative gain measurements.

Good impedance matching is equally important in a measurement chain. With a typical VSWR of 1.3:1, the antenna helps reduce reflected power and supports efficient signal transfer throughout its operating band. The performance curves in the data sheet show a smooth VSWR response and a steadily increasing gain trend across the frequency range, providing engineers with useful and predictable broadband behavior.

To accommodate different test-system architectures, the RM-SGHA159-10 is available with either an FDP58 waveguide interface or an SMA-Female coaxial interface. The waveguide version is suitable for direct integration with WR159 systems, while the coaxial version provides convenient connection to common RF cables, instruments, and measurement platforms.

Installation flexibility is another practical advantage. RF MISO offers ordinary L-type, rotating L-type, and I-type mounting bracket options. The rotating bracket allows polarization adjustment at 0°, 45°, and 90°, helping engineers maintain consistent polarization alignment during calibration, comparison, and radiation-pattern testing.

Manufactured from aluminum with a painted finish, the antenna combines a lightweight structure with mechanical durability. The coaxial-interface version supports 150 W average power and 3000 W peak power, while the specified operating temperature range of −40°C to +85°C allows use in both laboratory and demanding system environments.

With its stable gain, low VSWR, controlled beamwidth, flexible interfaces, and practical mounting options, the RM-SGHA159-10 standard gain horn antenna is a dependable choice for antenna measurement, microwave system integration, gain comparison, radar evaluation, and C-band RF testing.