The 18-40 GHz range is where precision horn antennas enable high-frequency testing, radar analysis, and signal intelligence work. This article highlights five viable options from trusted brands, with quick-access product details, and a practical buying guide to help engineers and hobbyists choose the right horn antenna for millimeter-wave and microwave applications.
| Product | Brand | Frequency Range | Link |
|---|---|---|---|
| RFSPACE RF28SGH Standard Gain Horn | RFSPACE | 26.5 GHz – 40 GHz | Amazon |
| Boosigant Horn Antenna 1 GHz–18 GHz | boosigant | 1 GHz – 18 GHz | Amazon |
| 30° Symmetrical Horn WB Antenna | RF Elements | 5 GHz – 6 GHz (unlicensed bands) | Amazon |
| Antennas Direct Goliath Uni-directional HDTV Antenna | Antennas Direct | UHF TV bands, 70+ miles range | Amazon |
| Super Antenna MR4010 Radial Set | Super Antenna | HF bands to 40m | Amazon |
All selections balance frequency capability, build quality, and practical mounting options. The RF28SGH provides direct 26.5–40 GHz performance, while the Boosigant unit covers a broader sweep up to 18 GHz for broader bench testing. The RF Elements horn offers strong performance in the 5–6 GHz range, and the Antennas Direct and Super Antenna options expand into UHF and HF regions for complementary testing setups. Use this guide to align your project needs with the right horn antenna type and mounting strategy.
RFSPACE RF28SGH Standard Gain Horn Antenna
The RFSPACE RF28SGH is designed for millimeter-wave and microwave applications, covering 26.5 GHz to 40 GHz. It uses a WR-28 flange and requires a COAX to WR-28 adapter for integration. This horn antenna is suitable for SIGINT, EMC testing, radar experimentation, and general microwave signal analysis in research and professional environments. Its standard gain design supports predictable radiation patterns essential for calibration and benchmarking in controlled lab settings.
Key considerations: frequency of interest, compatibility with existing test equipment, and the availability of adapters for your measurement chain. For high-frequency bench work, stable gain and clean far-field patterns are crucial. This model provides a compact, reliable option within the upper microwave band, ideal for lab setups and field-research projects where 26.5–40 GHz coverage is needed.
Boosigant Horn Antenna 1 GHz–18 GHz
The Boosigant horn covers a wide range from 1 GHz to 18 GHz with a linear-polarized feed horn and an N-Type female connector. It emphasizes low VSWR, high gain, and a broad, uniform radiation pattern. A notable feature is the back-structure L-shaped mounting bracket, which allows straightforward alignment for vertical, horizontal, and 45-degree polarization. This makes the antenna versatile for EMC testing, wireless device evaluation, and general RF pattern measurements across multiple bands.
Key considerations: connector compatibility, mounting flexibility, and the ability to maintain stable performance across the full band. For mixed-band testing environments, this model provides a convenient, durable option with flexible polarization options and robust physical design.
30° Symmetrical Horn WB Antenna
The 30° Symmetrical Horn WB Antenna from RF Elements targets 5 GHz and 6 GHz bands with a wideband performance that covers a broad spectrum for unlicensed operations. Key advantages include a high gain of 18 dBi and highly suppressed side lobes, which improves noise immunity and reduces interference from adjacent channels. The design emphasizes a narrow main lobe with wide bandwidth, ideal for point-to-point links, radar testing, and bench experiments that require clean directional radiation.
Key considerations: beamwidth, gain, and side-lobe suppression. This antenna is well-suited for controlled lab experiments and outdoor deployments where extended range and robust interference rejection are necessary, particularly in 5–6 GHz Wi-Fi and experimental microwave testbeds.
Antennas Direct Goliath Uni-directional UHF HDTV Antenna
The Goliath is an ultra-long-range uni-directional UHF TV antenna designed for over-the-air reception at distances beyond typical line-of-sight. While targeted at NEXTGEN TV and UHD content reception, its high-gain, narrow-beam characteristics can be informative for RF link budgeting and antenna pattern studies in the 600 MHz to 700 MHz range and above. The included mounting hardware supports outdoor mast or attic installations, making it a practical testbed for fixed-position RF experiments in rural and suburban environments.
Key considerations: beam directionality, mounting options, and compatibility with existing receiving hardware. This antenna is a strong candidate for experiments requiring a high-gain, single-direction UHF feed in a stable, weather-resistant package, though it is primarily oriented toward broadcast reception rather than lab-grade measurement instrumentation.
Super Antenna MR4010 Radial Set
The MR4010 Radial Set from Super Antenna is designed for MP1 series portable HF-VHF antenna systems and other vertical mobile configurations. It includes pre-tuned radial wires for bands across 40m, 20m, 15m, and 10m, extending to a broad range that supports HF testing and portable field setups. The gain benefit (+4.5 dB over a typical ground rod) and quick deployment make it a practical companion for field measurements, ground-plane simulations, and mobile operation. It is compatible with a wide range of vertical antennas and requires no tools for deployment.
Key considerations: compatibility with your MP1 system or similar setups, portability, and the coverage of the intended HF bands. This radial set is valuable for HF experimentation, ground-plane modeling, and compact, rapid-field testing where mobility is essential.
Buying Guide: Key Purchase Considerations For 18-40 GHz Horn Antennas
- Frequency range and application fit: Ensure the antenna’s operational range matches your test needs, whether it’s 26.5–40 GHz for millimeter-wave radar or broader bands for EMC testing.
- Polarization and mounting options: Consider whether vertical, horizontal, or dual-polarization capability is required, along with convenient mounting brackets for lab benches or outdoor masts.
- Connector type and interfacing: Verify connector compatibility (for example, WR-28, N-Type) and availability of adapters to connect with your signal source, receivers, and test equipment.
- Gain, beamwidth, and side-lobe performance: Higher gain improves link budgets but can reduce coverage area; clean beam patterns minimize interference in noisy environments.
- Physical build and durability: Look for weather-resistant housings, robust flange connections, and stable mechanical tolerances for repeatable measurements in lab and field conditions.
- Size, weight, and portability: For field testing or mobile laboratories, consider weight and ease of transport, especially for portable systems like MP1-based configurations.
- Support and Ecosystem: Availability of compatible accessories, documentation, and customer support can impact long-term usability and calibration routines.
- Compliance and safety: Ensure the antenna and setup comply with local RF exposure regulations and safety guidelines, especially in higher-frequency bands.
- Cost-to-performance balance: Weigh the price against gain, bandwidth, and durability to determine value for your specific research or production needs.
In summary, the RF28SGH stands out for direct high-frequency coverage into the 40 GHz region, while Boosigant and RF Elements offer flexible options across adjacent bands. The Antennas Direct and Super Antenna products complement a comprehensive testing setup by addressing UHF and HF needs, broadening the scope of bench-to-field experiments. Your final choice should align with the primary test frequencies, desired radiation patterns, and mounting practicality for your workspace or field site.