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Near-Field
1) EMF closest to the antenna. 2) Near-field optics.
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Near Field Probes
A typical emi emission test is performed using broadband EMC antennas such as biconical, log periodics, Combilogs and horns. These antennas usually placed at 1, 3 or 10 meter distance as required by the test specification. These is considered far field measurements and the emission limits are given for the specific distance by the specification. During EMI compliance measurements, the emissions levels from products are compared with these limits. If the product exceeds these limits it is considered failing. These tests are typically conducted in a open area test site IOATS) or inside an anechoic chamber.
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Deluxe Near-field Detection Receiver
ANDRE™ Deluxe
The ANDRE is a handheld broadband receiver that detects known, unknown, illegal, disruptive, or interfering transmissions. The ANDRE locates nearby RF, infrared, visible light, carrier current, and other types of transmitters. Quickly and discretely identify threats using the ANDRE Deluxe’s wide range of accessories specifically designed to receive transmissions from 10 kHz up to 12 GHz.
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Near Field Probes
MFA Family
The micro probes allow detailed measurements of high-frequency magnetic fields in the layout, at the smallest SMD components(0603-0201) and at IC pins of printed circuit boards.
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Near-Field Detection Module for Imaging
Transmission
Detection optimized for high performance near-field imaging in transmission-modeEnables optical amplitude and phase resolved near field measurementsPatented background-free detection technologyEnables bottom-side (transmission-mode) sample illumination with broadband mirrorSuited for visible and infrared wavelength range 0.5 20 mRequires transparent sample substrateMotorized parabolic mirror for easy beam-alignment in transmission-modeStationary focal point with respect to AFM-tipVariable illumination spot size (ca. 2m 100m)Suitable for plane-wave illuminationSupported AFM scan-speed: up to 20 m/s @ highest spatial resolution
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Near-Field Scanning Optical Microscope Platform
MoScan-F
MoScan-F is a device that enables you to get the best up-to-date available spatial optical resolution using the near field scanning optical microscope (NSOM) principle
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Near-Field Detection Module for Imaging
Reflection
Reflective AFM-tip illuminationDetection optimized for high-performance near-field imagingEnables optical amplitude and phase resolved near field measurementsNear-field spectroscopy possible via sequential imaging (Requires tunable illumination unit)Patented background-free detection technologySuited for visible & infrared wavelength range (0.5 20 m)Version for infrared & THz wavelength range (5 300 m) availableSupported AFM scan-speed: up to 20 m/s @ highest spatial resolution
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Near Field Probes
Used for accompanying measurements of high-frequency, electric and magnetic RF fields on assemblies and devices.
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Near Field Microprobe E-field 7 MHz to 3 GHz
ICR E150
The near field microprobe is used to measure electric fields at extremely high resolution and sensitivity. The optimal distance to the object being measured is < 1 mm. Due to its small probe head dimension, the probe has to be moved by a manual or automatic positioning system, e.g. Langer-Scanner.
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2D Near-Field Analysis of VCSEL Arrays
VTC 4000
Instrument Systems Optische Messtechnik GmbH
The VTC 4000 near-field camera from Instrument Systems was specially developed for the ultrafast, precise 2D analysis of VCSEL arrays. It enables polarization-controlled characterization of all relevant parameters simultaneously for the single emitters of the array.
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Near Field Probes
Anteral has extensive background in the design of Near Field Probes (open ended waveguides probes). Our Near Field Probes are currently being used in several laboratories around the world including the ESA's anechoic chamber. Anteral designs Near Field Probes from 10 GHz to 750 GHz covering the sectors requirements. Moreover, our Near Field Probes have a sharped design minimize reflections.
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Near Field Micro Probes ICR HH H Field
The measuring coil is horizontally located in the probe head. The near field micro probes are operated with a positioning system (Langer Scanner).
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Cylinder type, Near field Antenna Measurement System
anm02
As it combines the vertical direction of the probe antenna with the turn of the object antenna, and performs the near field measurement in the shape of a cylinder. The result will be converted to far field. Feature The pattern behind the antenna can be measured by a cylinder scanning. Fast measurement.For example ) Vertical direction 256 point and Rotatory direction 180 point : 30 minutes.
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Near-field Goniophotometer
RiGO801
TechnoTeam Bildverarbeitung GmbH
Correct determination of the luminous intensity distributions (lid) of lamps and luminaires far within their photometric near-field range. Capture of ray data.
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Near Field Probes 30 MHz up to 3 GHz
RF6 set
The RF6 near field probe set consists of 2 passive magnetic field probes and 2 passive E field probes for measurements in the development phase of the E-field and magnetic field in the range from 30 MHz to 3 GHz on electronic assemblies. The probe heads of the RF6 set allow a step by step localization of interference sources of the RF magnetic field and RF-E-field on an assembly. From a larger distance the electromagnetic interference is detected by RF-R 50-1 for the magnetic field and by RF-E 02 for the E-field. The RF-B 3-2 and RF-E 10 probes with their higher resolution can more presicely detect the interference sources of the magnetic field and the E-field. Field orientation and field distribution on an electronic assembly can be detected by special guidiance of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance.
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Scanning Near Field Optical Microscope
SNOM
SNOM microscopes employ SPMs precision of piezoelectric raster-scanning together with sharp probes to obtain light optical images at rather better than the usual wavelength-limited resolution. The possibility to go beyond the Abbe diffraction limit has been achieved with the Near-field light optical microscopes (SNOM or NSOM).
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Near Field Micro Probe ICR HV H Field
The measurement coil is located vertically in the probe head. The near field probes are run with a positioning system (Langer Scanner).
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Near Field Probes 1GHz - 10 GHz
SX set
The SX1 set consists of 3 passive near field probes for making measurements in the development phase of E-field and magnetic field with a high clock frequency in the range from 1 GHz to 10 GHz. The probe heads of the set SX allow for measurements close to electronic assemblies, e.g. on single IC pins, conducting paths, components and their connectors, to localize interference sources. Field orientation and field distribution on an electronic assembly can be detected through trained use of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They have an internal terminating resistance.
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Shielding Effectiveness/ Conductivity Test
EM-2107A | 30 MHz – 1.5 GHz
The EM-2107A is a standard test fixture for evaluation of the electromagnetic shielding effectiveness of planar material. The fixture is an enlarged section of coaxial transmission line and complies fully with the requirements of ASTM test method D4935-1. The measured data relates to the shielding effectiveness due to a plane wave (far field EM wave) from which near field values for magnetic and electric fields may be inferred. The EM-2107A is provided with a reference standard test specimen, a dynamic range specimen. Dynamic range of greater than 80dB is achievable, although the cables and other test system components usually establishes the limiting factors.
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Near Field Probes 30 MHz - 6 GHz
XF Family
The XF family consists of 4 passive magnetic field probes and 3 passive E field probes designed for measuring magnetic and E-fields in ranges from 30 MHz to 6 GHz during the development phase. Due to their integrated impendance matching the probes are less sensitive in the lower frequency range than the RF type probes.
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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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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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Near Field Probe Set
RF100
The RF100 probe set consists of a passive E field probe and H field probe, BNC adaptor and carry case. The output is via a BNC socket. These are general purpose probes which are ideal for use in conjunction with an EMC measuring system. They are sensitive to sources in close proximity, but are insensitive to background signals. This makes them ideal for the identification of emission frequencies in noisy environments... thus making measurements easier and quicker. The proximity requirement also enables sources to be located and the exit route identified.
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Test Labs
ART-MAN
ART-MAN uses 285 100% vector sensors per SAM phantom and 390 sensors in the flat body phantom to take accurate measurements based on state-of-the-art near-field theory.
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Ultrafast Nearfield Optical Microscope
Femtosecond NSOM
Near-field Scanning Optical Microscope (NSOM) is a versatile tool for nano-characterization and nano-manufacturing.
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Imaging Goniometers
Radiant Vision Systems fully-automated goniometric systems are combined with a ProMetric® Imaging Colorimeter or Photometer and specialized software to capture a precise, comprehensive model of a light source’s near-field output.
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USB Magnetometer
MultiDimension Technology Co.,Ltd.
A three-axis digital magnetometer that is intended for the measurement of magnetic fields near the probe tip at frequencies less than 250 Hz.
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Large-size Hybrid Reverberation / Anechoic Chamber
F-Series
The F large-size hybrid Reverberation/Anechoic Chamber represents the most versatile OTA test system in the market today. With the same unique test features of their E Series RC counterparts, the F-Series can also test large form-factor devices under test (DUTs) like laptops, large TV sets, solar and trash compactors, drones, fridges or washing and vending machines, among others. With up to 16x16, 8DLCC and DUTs up to 2m and 500 kg including full-body phantoms in a turntable, the F Series also expands the frequency range down to cover 200 MHz up to 40 GHz frequency ranges and the test modes to include EMC, BS, small cell, eNodeB and Virtual Drive Testing over the air (VDT-OTA). In an again unheard-of feature, the F-Series is also reverse-convertible into an Anechoic chamber, allowing Far Field (FF) and Spherical Near Field (SNF) radiation patterns, efficiency and gain measurements and pre-5G testing of antennas and devices. Conversion from RC to AC or vice versa can be performed within half a day.
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Near-field Scanning Optical Microscope
NSOM
Near-field Scanning Optical Microscope (NSOM) is a versatile tool for nano-characterization and nanomanufacturing.Conventional microscopes have fundamentally limited resolution due to diffraction, but there is no such restriction for near-field interactions, that is why near-field microscopy is becoming one of the most important techniques for nano-science.
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RF Near Field Probe Set DC to 9GHz
EMF & RF close field sniffer-set for use with any Spectrum Analyzer or Measurement Receiver. The EMC Near Field probe set allows for straightforward pinpointing and measurement of interference sources in electronic component groups as well as execution and monitoring of generic EMC measurement. Our RF near field probe set is especially suitable for: - Pinpointing interference sources - Estimation of interference field strength - Verification of shielding and filtering measures - Identifying faulty components - Detecting circuitry overly sensitive to interference.
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Near-Field Detection Module for Spectroscopy
nanoFTIR
Reflective AFM-tip illuminationDetection optimized for high-performance near-field spectroscopyPatented background-free detection technologyBased on optimized Fourier-Transform spectrometerUp to 3 spectra per secondStandard spectral resolution: 6.4/cmUpgrade to 3 cm-1 spectral resolution availableSuited for visible & infrared detection (0.5 20 m)Exchangeable beam-splitter mount includedNEW: Suited for IR synchrotron sources