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Far-Field
Antenna under test (AUT) measurements in the radiation zone (far zone).
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2D Far-Field Analysis of Infrared Emitters
VTC 2400
Instrument Systems Optische Messtechnik GmbH
The VTC 2400 is a high-resolution infrared-camera that was developed specially for 2D-far-field analysis of the radiant intensity distribution of VCSELs and IR emitters. The measurement system consists of a light-permeable screen and a monochrome camera specialized for measurements in the near infrared range.
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MMW Field Sensors
ITS-9050
The Innovative Technical Systems ITS-9050 Detector is a sensitive, harmonic mixing detector designed to measure millimeter-wave free-space radiation. It is ideal for measuring radiation patterns of antennas inboth the near and far-field. The ITS-9050 employs a free-running dielectric resonator oscillator (DRO) and an integrated harmonic mixer with a waveguide RF input that either connects directly to a circuit under test or to an antenna for radiation detection. The resulting IF is amplified and detected by an IF log-detector that drives a front panel LCD voltmeter to provide an indication of signal strength. A DC output voltage from the log detector is available on a BNC connector to drive external data acquisition instrumentation. Also, a sample of the IF output is provided for measurement on a spectrum analyzer.
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Near-field Chambers
Most antenna measurements need to be carried out in the far field; that is, the test antenna should be illuminated by a plane wave. Typically this is carried out by providing sufficient separation between the source and the AUT so the spherical wave approaches a plane-wave character.Near-Field chambers are an excellent alternative to traditional far-field ranges; testing that can be accomplished on a far-field range can be accomplished on a Near-Field test range. This method of testing allows an operator to employ an indoor anechoic test chamber at a reasonable cost and avoid the problems associated with weather and security concerns often encountered when using an outdoor test range.
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Antenna Measurement Chambers
Antenna measurement chambers can be utilized to make far-field antenna pattern measurements. These chambers are designed either in a rectangular or tapered configuration depending on the frequency range of interest. Rectangular Antenna Measurement Chambers, like the one shown above, are the most common type of Antenna Chamber. The chamber size is dependent on the frequency range and the quiet zone size required.
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Antenna Test Chamber
Comtest provides Antenna test ranges fully covered with microwave absorbers for both near-field and far-field measurements. Because we always strive for new solutions, our R&D department developed our ‘Javelin Tip’ polystyrene absorbers. The enhanced material composition and altered shape, lead to improved performance and cleaner working space, enabling you to make high precision antenna testing fast, reliable, and worry-free.
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Antenna Test & Measurement Solutions
MVG offers the broadest choice of solutions based on near-field, far-field and compact range measurement techniques for Antenna, EMC, RCS and Radome testing. Our solutions support the measurement needs of the Aerospace & Defense, Telecommunications and Automotive industries, as well as Academic and Research institutes. MVG standard systems are customizable, facilitating selection, allowing for specifications, and guaranteeing an upgrade path for the enhancement of system capabilities. From components and parts to full turn-key solutions, the right combination enables our customers to meet specific measurement needs in a variety of testing configurations.
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CATR Benchtop Antenna Test System
ATS800B
Very compact far-field over-the-air (OTA) test system based on compact antenna test range (CATR) technologyUnrivaled quiet zone size within 0.8 m2 footprintState-of-the-art reflector ensuring a high quiet zone accuracyUnique benchtop CATR system supporting over 50 GHzIndirect far-field method (approved by 3GPP for 5G OTA testing)
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Compact Antenna Test Range
700.00 MHZ – 110000.00 MHZ
A Compact Antenna Test Range (CATR) allows electrically large antennas to be measured at a significantly shorter distance than would be necessary in a traditional far-field test range. Compact ranges use a source antenna (feed) to radiate a spherical wave in the direction of a parabolic reflector, collimating it into a planar wave for aperture illumination of a Device under Test (DUT). It's lowest operational frequency is determined by the size of the reflector, its edge treatment and the absorbers. The two edge treatments available are serrated edge for general purpose applications, and rolled edge to achieve higher accuracy for special applications. Multiple-feed systems may be used to improve the far-field characteristics. A compact range test system also allows system level testing of a complete device architecture.
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Testing Large Radar Sensors with CATR Technology
CATR Radar Test System UTP 5069
Modern driver assistance systems must recognize increasingly complex traffic scenarios and convert them into appropriate vehicle reactions with the help of artificial intelligence (AI) and specific algorithms. Imaging radar sensors with a higher spatial resolution, so-called imaging radar sensors, are therefore required. These can better distinguish larger from smaller objects and, due to the larger antenna apertures, also require larger dimensions of the test environment or larger far-field distances. Testing these sensors in the direct far field ( UTP 5065 ) would therefore require very large absorber chambers up to ten meters in size and more.Our efficient test system UTP 5069 offers exactly the right solution:By using CATR technology (Compact Antenna Test Range), 4D, imaging and other radar sensors with large far-field distances are calibrated with high precision in a small footprint. With the extremely low-reflection NOFFZ absorber chamber, the system is very well suited not only for validation, but also for EOL tests.
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Rack based antenna test system
R&S®ATS800R CATR
Very compact far-field over-the-air (OTA) test system based on compact antenna test range (CATR) technologyUnrivaled quiet zone size within 0.8 m2 footprintState-of-the-art reflector ensuring a high quiet zone accuracyUnique rack based CATR system supporting over 50 GHzIndirect far-field method (approved by 3GPP for 5G OTA testing)
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RF Safety Monitoring
FieldSENSE 60
The fieldSENSE 60 personal RF monitor has a proven track record of durability that works as hard as you do. fieldSENSE 60 is specifically designed with the RF climber in mind. Whether working in the nearfield of a broadcast system or in the far-field of a 5G system, exposure is correctly assessed and a warning is sounded, should the levels approach and exceed the OET65 and Safety Code 6 occupational limits. To ensure the device cannot be dropped off site, connect he device can be attached the included special harness-attachment mechanism. In the event of a warning while the monitor has fallen the buzzer is still within hearing range.
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RGO-2000P Robotic Goniophotometer For Plant Lighting
Hangzhou Everfine Photo-E-Info Co., LTD
RGO-2000P proposed a solution based on the plant lighting requirement to measure and evaluate the spatial light distribution performance of plant lighting based on the limitations of far-field measurement and ILMD near field distribution goniophotometer.
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Services
Our FARFIELD NDT division work with customers and industrial partners to develop novel and custom solutions, and to provide advanced inspection services to our customers in the field. Our R&D group includes world-known experts in EMAT technology and other advanced techniques. The inspection services group provide advanced inspection services using guided waves and other advanced techniques.
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Single Probe Scanning Probe Microscope
MultiView 2000
an advanced single probe scanning probe microscope enabling a variety of modes of AFM/SPM/NSOM imaging. Nanonics has designed The MultiView 2000TM for excellence in scanning probe microscopy while allowing for near-field and far-field optical NSOM/Raman/TERS imaging without perturbation. The Multiview 2000TM is the only commercially available instrument that offers both tip and sample scanning. This versatility is important for different operation modes where the user can now choose whether the sample or tip is static. The Multiview 2000TM further offers the most stable feedback mechanism available in the form of normal force feedback with tuning fork actuation.
