RM-DCGHA1822-20 Dual Linear Polarization Corrugated Horn Antenna for 18-22 GHz RF Applications

For RF engineers working in the 18-22 GHz band, antenna stability is more than a specification on a datasheet. A test antenna needs predictable gain, controlled polarization behavior, and reliable impedance matching across the operating band. The RF MISO RM-DCGHA1822-20 is a dual linear polarization corrugated horn antenna designed for microwave measurement, radar evaluation, communication system testing, and polarization-sensitive RF integration.

This model operates from 18 to 22 GHz and provides 20 dBi typ. gain with VSWR 1.5:1 typ. The corrugated horn structure supports clean radiation characteristics and stable beam behavior, making the antenna suitable for engineering environments where repeatability and directional performance matter. With dual linear polarization, users can work with two orthogonal linear polarization channels in one antenna body, reducing the need to physically replace antennas during polarization comparison or system verification.

According to the RF MISO datasheet, the RM-DCGHA1822-20 offers 35 dB typ. cross polarization. For practical test setups, this helps engineers evaluate polarization isolation, antenna alignment, and channel behavior in controlled RF environments. The antenna uses a 2.92 mm Female connector, an aluminum body with painted finish, a compact mechanical size of 129.3 x Ø 72.1 mm, and a weight of 0.166 kg.

Key Specifications

Model	RM-DCGHA1822-20
Frequency Range	18-22 GHz
Gain	20 dBi typ.
VSWR	1.5:1 typ.
Polarization	Dual Linear
Cross Polarization	35 dB typ.
3 dB Beamwidth, Port 1	E-Plane: 18.3-22.4 deg; H-Plane: 17.7-21.2 deg
3 dB Beamwidth, Port 2	E-Plane: 18.3-22.4 deg; H-Plane: 17.8-21.2 deg
Connector	2.92 mm Female
Material / Finish	Aluminum, painted finish
Size / Weight	129.3 x Ø 72.1 mm; 0.166 kg

Typical Applications

The RM-DCGHA1822-20 is suitable for antenna measurement, RF laboratory comparison, radar and sensing evaluation, microwave communication link testing, polarization diversity experiments, and system-level integration in the 18-22 GHz range. Its combination of dual linear polarization, typical 20 dBi gain, and compact corrugated horn construction makes it a practical choice for engineers who need a dependable antenna for repeatable microwave testing.

Selection Notes for Engineers

When selecting a corrugated horn antenna, engineers should consider the required frequency coverage, gain level, polarization mode, connector interface, mechanical mounting space, and the measurement environment. For dual-polarized test setups, it is also important to review cross polarization, beamwidth, and port configuration before final integration. If the antenna will be used in a chamber, on a fixture, or as part of a repeatable measurement path, RF MISO can help review the antenna specification together with the customer’s system requirements.

Why Choose RF MISO

RF MISO develops and manufactures antennas and communication devices for commercial, experimental, and test-system applications. For this model, our team can support customers with product selection, connector requirements, application matching, and technical documentation before purchase.