Conferences related to Microwave Materials

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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science


2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE 70th Electronic Components and Technology Conference (ECTC)

ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Electron Devices Meeting (IEDM)

the IEEE/IEDM has been the world's main forum for reporting breakthroughs in technology, design, manufacturing, physics and the modeling of semiconductors and other electronic devices. Topics range from deep submicron CMOS transistors and memories to novel displays and imagers, from compound semiconductor materials to nanotechnology devices and architectures, from micromachined devices to smart -power technologies, etc.


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Periodicals related to Microwave Materials

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Advanced Packaging, IEEE Transactions on

The IEEE Transactions on Advanced Packaging has its focus on the modeling, design, and analysis of advanced electronic, photonic, sensors, and MEMS packaging.


Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Communications, IEEE Transactions on

Telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation, including radio; wire; aerial, underground, coaxial, and submarine cables; waveguides, communication satellites, and lasers; in marine, aeronautical, space and fixed station services; repeaters, radio relaying, signal storage, and regeneration; telecommunication error detection and correction; multiplexing and carrier techniques; communication switching systems; data communications; and communication theory. In addition to the above, ...


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Most published Xplore authors for Microwave Materials

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Xplore Articles related to Microwave Materials

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A New Technique For Estimating The Transverse Dielectric Constant Of Laminated Microwave Materials

2006 European Microwave Conference, 2006

A new technique has been developed well suited to estimate the real part of the transverse dielectric constant of laminated microwave materials. Variations in the transverse dielectric constant influence the performance of circuits and antennas for which the electric field components parallel to the laminate surface are not negligible (e.g. suspended microstrip lines (SMLs) employed in the sandwich wire antenna ...


Temperature dependence of complex permittivity of planar microwave materials

2006 Asia-Pacific Microwave Conference, 2006

Fabrication of dielectric materials with low losses at microwave frequencies and stable dielectric properties under varying temperatures is an important and challenging area of research. In this paper characterisation of several planar dielectrics at microwave frequencies (~9.5 GHz) in the temperature range from 20 K to 290 K using a split post dielectric resonator has been presented. We have compared ...


Temperature stable thermoplastic microwave materials and copper laminates

IEEE 7th Topical Meeting on Electrical Performance of Electronic Packaging (Cat. No.98TH8370), 1998

High dielectric constant materials are increasingly needed in microwave circuit miniaturization for outdoor and indoor wireless applications. In this presentation, temperature stable high dielectric constant thermoplastic polymer compositions and copper laminated sheets made from these compositions for wireless applications are introduced. The compositions are made by mixing suitable ceramics and polymers. The design, fabrication and properties of these compositions and ...


A fast and efficient permittivity estimation method for artificially engineered microwave materials

2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 2014

A simulation based method is proposed to estimate the effective permittivity of artificially engineered materials with controlled electromagnetic properties, that can increase the effective permittivity of low permittivity dielectrics. Details of the proposed method and the results for a sample with window-shaped inclusions are discussed. The method provides a systematic approach to study the influence of different parameters on the ...


Optical Properties of Low Loss (70dB/km) Hypocycloid-Core Kagome Hollow Core Photonic Crystal Fiber for Rb and Cs Based Optical Applications

Journal of Lightwave Technology, 2013

We report on hypocycloid core shaped hollow-core Kagome fiber with a record loss of 70 dB/km at a spectral range of around 750-850 nm, which is compatible with Cs and Rb based applications. The fiber exhibits a single mode operation in a core diameter as large as 40 μm, and very low sensitivity to bend. We show experimentally that the ...


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Educational Resources on Microwave Materials

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IEEE.tv Videos

IMS 2012 Microapps - Bonding Materials used in Multilayer Microwave PCB Applications
IMS MicroApp: Advances in High Frequency Printed Circuit Board (PCB)
MicroApps: Fast, Accurate and Nondestructive Solutions of Materials Test up to 1.1 THz (Agilent Technologies)
Amalga: Alternative to MEMS Technology for Miniature RF Components
Recent Research Activities of Applied Superconductivity in China
HARI SRIKANTH - IEEE Magnetics Distinguished Lecture
IMS 2011 Microapps - Improved Microwave Device Characterization and Qualification Using Affordable Microwave Microprobing Techniques for High-Yield Production of Microwave Components
The Josephson Effect: SQUIDs Then and Now: From SLUGS to Axions
Spatial-Spectral Materials for High Performance Optical Processing - IEEE Rebooting Computing 2017
EMBC 2011-Keynote-From Nature and Back Again ... Giving New Life to Materials for Energy, Electronics, Medicine and the Environment - Angela Belcher, PhD
Nanoscale Magnetism with Picosecond Time Resolution and High Sensitivity - Hendrik Ohldag - IEEE Magnetics Distinguished Lecture
IMS Organizer: Richard Snyder, President Elect for MTT-S
IMS 2010 - International Microwave Symposium
IMS 2012 Special Sessions: A Retrospective of Field Theory in Microwave Engineering - Magdalena Salazar Palma
ASC-2014 SQUIDs 50th Anniversary: 2 of 6 - John Clarke - The Ubiquitous SQUID
IMS 2012 Special Sessions: The Evolution of Some Key Active and Passive Microwave Components - Richard True
IMS 2012 Special Sessions: A Retrospective of Field Theory in Microwave Engineering - David M. Pozar
IMS 2012 Microapps - Improve Microwave Circuit Design Flow Through Passive Model Yield and Sensitivity Analysis
IMS 2012 Microapps - Panel Session: Device Characterization Methods and Advanced RF/ Microwave Design
IMS 2011 Microapps - Techniques for Validating a Vector Network Analyzer Calibration When Using Microwave Probes

IEEE-USA E-Books

  • A New Technique For Estimating The Transverse Dielectric Constant Of Laminated Microwave Materials

    A new technique has been developed well suited to estimate the real part of the transverse dielectric constant of laminated microwave materials. Variations in the transverse dielectric constant influence the performance of circuits and antennas for which the electric field components parallel to the laminate surface are not negligible (e.g. suspended microstrip lines (SMLs) employed in the sandwich wire antenna (SWA)). The technique is based on the correlation between phase measurements on samples of the material in a waveguide using a vector network analyzer (VNA) and analytical formulas or finite element method (FEM) simulations. The technique has been verified to provide test results which correlate quite well with resonant methods based on cavity perturbation techniques

  • Temperature dependence of complex permittivity of planar microwave materials

    Fabrication of dielectric materials with low losses at microwave frequencies and stable dielectric properties under varying temperatures is an important and challenging area of research. In this paper characterisation of several planar dielectrics at microwave frequencies (~9.5 GHz) in the temperature range from 20 K to 290 K using a split post dielectric resonator has been presented. We have compared temperature stability of measured dielectric properties of RT5880, RT6010, LTCC, FR4 and Ba(Mg<sub>x</sub>Ta<sub>y</sub>)O<sub>3</sub> materials. Presented results are useful for selection of a material suitable for a specific application.

  • Temperature stable thermoplastic microwave materials and copper laminates

    High dielectric constant materials are increasingly needed in microwave circuit miniaturization for outdoor and indoor wireless applications. In this presentation, temperature stable high dielectric constant thermoplastic polymer compositions and copper laminated sheets made from these compositions for wireless applications are introduced. The compositions are made by mixing suitable ceramics and polymers. The design, fabrication and properties of these compositions and some applications, including antennas and filters, are discussed. The effect of temperature on the resonance frequency of patch antennas made from the copper laminated high dielectric constant composite sheets are also discussed.

  • A fast and efficient permittivity estimation method for artificially engineered microwave materials

    A simulation based method is proposed to estimate the effective permittivity of artificially engineered materials with controlled electromagnetic properties, that can increase the effective permittivity of low permittivity dielectrics. Details of the proposed method and the results for a sample with window-shaped inclusions are discussed. The method provides a systematic approach to study the influence of different parameters on the effective permittivity, which is necessary for using these materials in antenna design.

  • Optical Properties of Low Loss (70dB/km) Hypocycloid-Core Kagome Hollow Core Photonic Crystal Fiber for Rb and Cs Based Optical Applications

    We report on hypocycloid core shaped hollow-core Kagome fiber with a record loss of 70 dB/km at a spectral range of around 750-850 nm, which is compatible with Cs and Rb based applications. The fiber exhibits a single mode operation in a core diameter as large as 40 μm, and very low sensitivity to bend. We show experimentally that the bending-loss is limited by coupling between the guiding core mode and the modes in the cladding holes.

  • Determination of the permittivity and permeability for some low-loss and high-loss microwave materials

    This paper contributes to the validation and experimental determination of the complex permittivity and permeability of microwave materials intended for use with antennas. The two-port microwave scattering coefficients were measured for samples of the materials in closed coaxial and rectangular waveguide systems. A non-iterative and stable version of the Nicholson Ross and Weir transmission reflection technique was used to determine the complex constitutive parameters. Extracted results for microwave materials including Aluminium Nitride, Boron Nitride and a Silicone binding agent are presented. Some preliminary data on a manufactured Barium Titanate and Carbon fibre polymer composite microwave absorber is also described.

  • Microwave materials characterization of geopolymer precursor powders

    Geopolymers are structural materials that can be used as a viable alternative to ordinary portland cement concrete. However, their widespread adoption has been limited by the lack of understanding in their fundamental reaction mechanisms. Microwave characterization methods have shown promise at understanding these reaction mechanisms. However, the complex dielectric properties of geopolymer precursor powders and the effect of void content must first be understood. Therefore, in this work, the dielectric properties of two geopolymer precursor powders (blast furnace slag and fly ash) are measured. Then, the effect of void content and particle size distribution (PSD) is considered on the measured dielectric properties. By characterizing the inherent void content of these powder materials, this effect can be removed and therefore the true dielectric properties of the materials can be determined. The results show that the void content has a significant effect on the measured dielectric properties.

  • Macro Bending Losses in Single-Cell Kagome-Lattice Hollow-Core Photonic Crystal Fibers

    We report on numerical and experimental results on macro bending losses in single-cell Kagome-lattice hollow-core photonic crystal fibers. Fibers with different cladding layer numbers have been investigated. Results show that a cladding with at least two rings produces a reduction in bend sensitivity by more than one order of magnitude relative to a single layer cladding. This result is an original way to confirm the main role played by the inhibiting coupling mechanism in such microstructured fibers.

  • The robustness of S-parameter methods for measuring the intrinsic properties of microwave materials

    S-parameter data are often used to retrieve the intrinsic properties of a disparate range of microwave materials; the permittivity of low loss dielectrics and the permittivity, permeability and chirality of lossy chiral composites may all be measured using broadly similar techniques. The robustness of three S-parameter methods for measuring the intrinsic properties of arbitrary materials is investigated. Using simulated error data the performance of each method is analyzed and conclusions drawn as to its effectiveness. The amplitude-only method exhibited highly fluctuating error data. Significantly, the importance of error in S-parameter amplitude data does not necessarily remain constant when two phase values are swapped for two amplitude values. When adopting optimized amplitude parameter measurement schemes for four parameter measurements, one must not assume that the effects of amplitude error remain unaffected.<<ETX>>

  • Optical constants of some commercial microwave materials between 90 and 1200 GHz

    The optical constants of three commercial microwave materials have been determined between 90 and 1200 GHz at 290 K by the techniques of dispersive Fourier-transform spectroscopy. The materials studied were a cast microwave absorber known as Ferroflow, a machinable glass ceramic known as Macor and a substrate material for planar microwave circuitry known as Epsilam-10. The former two of these have been shown to be potentially suitable for use as thermal sources for the absolute calibration of radiometric instrumentation. The glass ceramic has also been shown to have a broad absorption band centred on 9 cm<sup>-1</sup> that is obscured in the absorption spectrum by its rapid increase to high wave number, but that is clearly seen in the refraction spectrum.



Standards related to Microwave Materials

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IEEE Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures

This standard provides uniform measurement procedures for determining the effectiveness of electromagnetic (EM) shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable down to 50 Hz and up to 100 GHz). The owner of the shielding enclosure shall provide the frequencies at which the shield will be tested, and the shielding effectiveness (SE) limits for pass/fail. This standard ...



Jobs related to Microwave Materials

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