Founded in 2003, RFspin Ltd. has become a prominent developer of antennas used around the world — chiefly measurement antennas deployed in prestigious R&D centres from universities and industry to military and space agencies, backed by expertise in RF/IF microwave components.
QRH-series · dual-polarized quad-ridged horns
Calibrated, broadband measurement antennas for EMC, antenna and material testing — plus communication and rugged outdoor antennas for field deployment.
Dual-polarized quad-ridged horn antennas (QRH series) for simultaneous dual-pol measurement across very wide bandwidths.
View lineBroadband double-ridged waveguide horns (DRH series) — workhorse antennas for EMC emission and immunity testing.
View lineLog-periodic dipole antennas (LPP / SLPP series) delivering constant performance over broad frequency ranges.
View lineCalibrated measurement antennas trusted by research centres, industry, military and space agencies worldwide.
View lineSpecial-purpose and outdoor antennas, plus fully custom designs developed to specific frequency, mechanical and measurement requirements.
View lineRugged outdoor antennas built for field, communication and monitoring use across demanding environments and weather conditions.
View lineA selection of RFspin's quad-ridged, double-ridged and log-periodic antennas. Full datasheets are on rfspin.com.

A high-performance dual-polarized horn covering 6–67 GHz for RF labs, 5G research and advanced wireless development — individually calibrated.
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A compact dual-polarized quad-ridged horn covering 4–40 GHz, combining small dimensions with high accuracy and a K (female) connector.
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A broadband dual-polarized horn covering 1.6–20 GHz with an integrated spirit level for fast, accurate setup — individually calibrated.
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A compact double-ridged horn covering 4.5–50 GHz with excellent electrical performance and a 2.40 mm (female) connector — individually calibrated.
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RFspin's largest-caliber double-ridged horn, covering 180 MHz–2.2 GHz — ideal for big chambers and EMC/EMI measurements, with an N-type connector.
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A dual-polarized broadband horn covering 4–40 GHz with RFspin's 3D-printed lens technology for increased gain — individually calibrated with QR-code data.
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A rugged dual-polarized quad-ridged horn operating from 400 MHz, compliant with MIL-STD-810F for field and defense measurement use.
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A high-gain double-ridged horn covering 8–44 GHz with patented increasing-gain lens technology — maximum gain nearly 30 dB, individually calibrated.
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A stacked log-periodic dipole antenna covering 200 MHz–3 GHz for EMC measurement, combining two LPDA structures for ~2.5 dB extra gain and low SWR.
Read moreNeed a specific band, polarization or a calibrated antenna kit? See the full RFspin range →
RFspin Ltd. was founded in 2003 and has become a prominent company in developing and selling antennas, which have found their place around the world.
It specializes chiefly in measurement antennas used in measurement systems at prestigious research and development centres — from universities through industry and military as far as space agencies.
Beyond first-class measurement antennas, RFspin offers expertise in specialized design and support of measurement and communication systems, including rugged outdoor antennas for field and communication use, such as switches, dividers, pre-amplifiers and hybrids.
IMPO-RF supplies and supports RFspin's measurement and horn antennas. Tell us your band, polarization and test setup, and we'll spec the right antenna.