The 2.4 GHz ISM band is shared by Wi-Fi, Bluetooth, Wireless HART, ISA100.11a, and several other industrial wireless systems. This band also includes microwave ovens which produce interference that disrupt communications within their vicinity, therefore, understanding and monitoring for interference from these types of radio emissions sources is crucial to ensure an optimal wireless user experience. Microwave ovens are common radio interference sources that disrupt the operation of the wireless networks in industrial environments. While avoiding these types of emissions would be an ideal solution, human practicalities often make the elimination of microwave ovens impossible. Therefore, understanding the properties of this common radio emission is necessary. A real-time spectrum analyzer (RTSA) was used to capture complex baseband recordings of radio frequency emissions of three different microwave ovens at 2.45 GHz. The measurement data herein may be used to replicate the interference in a laboratory setting and thereby allowing industrial wireless network integrators to evaluate the performance of their wireless networks operating concurrently with this type of interference.Disclaimer: Certain commercial equipment, instruments, or materials are identified in this publication in order to describe the experimental procedures and data adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the materials or equipment identified are necessarily the best available for the purpose.

The 2.4 GHz ISM band is shared by Wi-Fi, Bluetooth, Wireless HART, ISA100.11a, and several other industrial wireless systems. Our dataset contains comprehensive electromagnetic interference (EMI) measurements from machinery taken in various industrial environments. The measurements were taken at two frequencies: 900 MHz, 2.4 GHz. This dataset may be useful for understanding EMI emitters in factories and can be instrumental in developing interference mitigation strategies, aiding in RF band selection and enterprise frequency planning, improving wireless technology, and informing communications standardization activities such as the IEEE 3388 industrial wireless performance evaluation standard.The interference measurements were taken in the following types of industrial environments:1) Infrared Curing Machine: Curing process using infrared radiation producing EMI across the 2.4 GHz band, 2) Crane with an Unshielded VFD: Overhead gantry crane operating at 900 MHz with an unshielded variable frequency drive (VFD) causing broadband interference, 3) Microwave Dryer: Two independent sets of measurements of a microwave oven baking machines used for a ceramic drying process. Multiple magnetrons are used with a power output of 1100 Watts each, 4) Unidentified Interference: General recording of the 2400 MHz band capturing both wireless network traffic and an unidentified broadband RFI emitter possibly caused by an unshielded VFD.NIST Disclaimer: Certain commercial equipment, instruments, or materials are identified in this publication in order to describe the experimental procedures and data adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the materials or equipment identified are necessarily the best available for the purpose.

The 2.4 GHz ISM band is shared by Wi-Fi, Bluetooth, Wireless HART, ISA100.11a, and several other industrial wireless systems. Our dataset contains comprehensive electromagnetic interference (EMI) measurements from TIG welding processes conducted in the NIST fabrication shop. The measurements were taken using a typical arc welding power source and recorded at three distinct frequencies: 900 MHz, 2.4 GHz, and 5.3 GHz. The data collection was performed with a bandwidth of 160 MHz and a sample rate of 625 MHz, providing high-resolution insights into the EMI characteristics during the welding operations. This dataset may be useful for understanding the EMI behavior in TIG welding and can be instrumental in developing interference mitigation strategies, aiding in RF band selection and frequency planning, and improving welding technology and regulations.Disclaimer: Certain commercial equipment, instruments, or materials are identified in this publication in order to describe the experimental procedures and data adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the materials or equipment identified are necessarily the best available for the purpose.

Included here are figures and other relevant data from the paper "Characterizing Interconnects to 325 GHz". Abstract: We developed an interconnect characterization procedure that first embeds the interconnect into the error boxes of a multiline thru-reflect-line calibration and subsequently de-embeds the interconnect with a multi-tiered calibration. We experimentally validated our method with distributed contactless interconnects in the form of broadside coupled coplanar waveguides as a test case. We find excellent agreement between experiment, full-wave simulations, and a distributed model of contactless interconnects. This work provides a rigorous method to accurately characterize interconnects when conventional approaches are not applicable.

We present a method for accurately determining the permittivity of dielectric materials in 3D integrated structures at broadband RF frequencies. With applications of microwave and millimeter-wave electronics on the rise, reliable methods for measuring the electrical properties of dielectrics used in integrated circuits are critical. We outline an on-wafer method for extracting the permittivity of a 3D multilayer glass structure from 100 MHz to 30 GHz using S-parameter measurements of different calibration chips. Our method can be used to inform better design of metrology for dielectric materials for 3D integrated circuit technologies.This is data associated with the manuscript "Characterizing the broadband RF permittivity of 3D-integrated layers in a glass wafer stack from 100 MHz to 30 GHz" for the 2024 International Microwave Symposium (IMS) in Washington, D.C. The manuscript is currently under review by ERB in the NPS system under PUB ID 957051 / N2024-0193

서비스 또는 시설자(이동통신사 등) 별 전자파 인체 보호 기준 측정값 통계 현황 입니다.

Build and test a full size (4x2 meter aperture) breadboard antenna for SMLS.

• Demonstrate critical azimuth scanning capability of a 4m SMLS antenna and its performance under thermal load environments.

This dataset is for the publication entitled "LABORATORY-BASED REFERENCE CHANNELS FOR MILLIMETER-WAVE WIRELESS DEVICE MEASUREMENTS." The dataset includes results from experiments in a simulated industrial wireless channel operated at 28 GHz. Results include synthetic-aperture beamforming data, and error-vector-magnitude information calculated from synthetic-aperture and directional-antenna measurements.