Submillimeter wave propagation
246 resources related to Submillimeter wave propagation
- Topics related to Submillimeter wave propagation
- IEEE Organizations related to Submillimeter wave propagation
- Conferences related to Submillimeter wave propagation
- Periodicals related to Submillimeter wave propagation
- Most published Xplore authors for Submillimeter wave propagation
ICC 2021 - IEEE International Conference on Communications
IEEE ICC is one of the two flagship IEEE conferences in the field of communications; Montreal is to host this conference in 2021. Each annual IEEE ICC conference typically attracts approximately 1,500-2,000 attendees, and will present over 1,000 research works over its duration. As well as being an opportunity to share pioneering research ideas and developments, the conference is also an excellent networking and publicity event, giving the opportunity for businesses and clients to link together, and presenting the scope for companies to publicize themselves and their products among the leaders of communications industries from all over the world.
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
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.
This symposium pertains to the field of electromagnetic compatibility.
The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.
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.
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.
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
EMC standards; measurement technology; undesired sources; cable/grounding; filters/shielding; equipment EMC; systems EMC; antennas and propagation; spectrum utilization; electromagnetic pulses; lightning; radiation hazards; and Walsh functions
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.
Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004., 2004
We have developed the submillimeter wave ESR measurement system under pressure up to 3.5 kbar using the transmission technique. This system has the advantages that the pulsed magnetic field up to 16 T and the wide frequency region up to 670 GHz are available. The pressure is generated by the clamped- type pressure cell whose inner parts are all made ...
IEEE Transactions on Microwave Theory and Techniques, 1998
While monolithic integrated-circuit technology promises a practical means for realizing reliable reproducible planar millimeter and submillimeter-wave circuits, conventional planar circuits do not allow for critical post- fabrication optimization of performance. A 620-GHz quasi-optical monolithic detector circuit is used here to demonstrate the performance of two integrated micromechanical planar tuning elements. This is the first reported demonstration of integrated micromechanical tuning ...
IEEE International Digest on Microwave Symposium, 1990
A method for fabricating thick metallic mesh with a grid constant as low as 0.0025 in. and wall-thickness-to-depth aspect ratios greater than 5:1 is described. The method can be used to produce sharp cutoff submillimeter-wave filters and polarizers previously realizable only in thin screen form or on a dielectric backing. The uniformity and flatness of the final grids are competitive ...
2010 IEEE International Vacuum Electronics Conference (IVEC), 2010
0.22 THz sheet beam traveling wave tube amplifier (TWTA) circuits fabricated by microelectro mechanical system (MEMS) processes are under investigation for submillimeter wave applications. Currently, we are investigating three different methods; KMPR UV-LIGA and nano CNC machining. Eigenmode transient simulations show that, accounting for realistic values of our currently achievable fabrication tolerances, the transmission, and dispersion properties of the operation ...
Journal of Microelectromechanical Systems, 1998
A micromechanical planar tuning element has been developed and demonstrated in a fully monolithic 620-GHz integrated circuit. It allows for the mechanical variation of the electrical length of a coplanar transmission line tuner and is called a sliding planar backshort (SPB). It consists of a movable patterned rectangular metal plate confined by polyimide flanges along two of its edges to ...
From THz imaging to millimeter-wave stimulation of neurons: Is there a killer application for high frequency RF in the medical community? (RFIC 2015 Keynote)
Microwave PCB Structure Selection Microstrip vs. Grounded Coplanar Waveguide: MicroApps 2015 - Rogers Corporation
Millimeter Wave Mobile Communications for 5G Cellular: It Will Work!
IMS 2015: Chris Walker - John Tucker Special Tribute - SuperCam: A 64 Pixel SIS Receiver Array for Submillimeter-wave Astronomy
The ALMA Array: An IMS 2013 Closing Keynote
Brooklyn 5G Summit 2014: Modeling the Indoor Radio Propagation with Dr. K Haneda
IMS MicroApp: Unexpected effects of conductor profile on the propagation constant
Microapps: Enabling Optimized Performance and Lower TCO (Total Cost of Ownership) with Infineon mm-Wave Transceiver
Solving Sparse Representation for Image Classification using Quantum D-Wave 2X Machine - IEEE Rebooting Computing 2017
IMS 2015: Jonas Zmuidzinas - John Tucker Special Tribute - The High-Frequency Limits of SIS Receivers
Brooklyn 5G - 2015 - Michael Ha - Expanding Use of the Millimeter Wave Spectrum with 5G
IMS 2014:Flip Chip Assembly for Sub-millimeter Wave Amplifier MMIC on Polyimide Substrate
Millimeter-Wave Bandpass Filter Using High-Q Conical Inductors and MOM Capacitors: RFIC Interactive Forum
D-Wave Quantum Computer: Technology Update - Fabio Altomare - ICRC San Mateo, 2019
5g Cellular: It Will Work!
IMS 2012 Special Sessions: The Evolution of Some Key Active and Passive Microwave Components - Richard True
Brooklyn 5G Summit 2014: Dr. Robert Heath on Coverage and Capacity Analysis of Dense Millimeter Wave Cellular System
IEEE Magnetics Distinguished Lecture - Mitsuteru Inoue
Brooklyn 5G - 2015 - George MacCartney - MmWave Channel Models - A Unified Approach for 5G Standardization and Modern Design
We have developed the submillimeter wave ESR measurement system under pressure up to 3.5 kbar using the transmission technique. This system has the advantages that the pulsed magnetic field up to 16 T and the wide frequency region up to 670 GHz are available. The pressure is generated by the clamped- type pressure cell whose inner parts are all made by the sapphire. We applied this system to the study of the quantum spin-gap system KCuCl/sub 3/ and obtained the direct evidence that the gap energy of this compound decreased under pressure.
While monolithic integrated-circuit technology promises a practical means for realizing reliable reproducible planar millimeter and submillimeter-wave circuits, conventional planar circuits do not allow for critical post- fabrication optimization of performance. A 620-GHz quasi-optical monolithic detector circuit is used here to demonstrate the performance of two integrated micromechanical planar tuning elements. This is the first reported demonstration of integrated micromechanical tuning at submillimeter wavelengths. The tuning elements, called sliding planar backshorts (SPBs), are used to adjust the electrical length of planar transmission-line tuning stubs to vary the power delivered between a substrate-lens coupled planar antenna and a thin-film bismuth detector over a range of nearly 15 dB. The circuit performance agrees with theoretical calculations and microwave measurements of a -0.06-dB reflection coefficient made for a scale model of the integrated tuners. The demonstrated tuning range for the SPB tuners indicates that they can be valuable for characterizing components in developmental circuits and for optimizing the in-use performance of various millimeter and submillimeter- wave integrated circuits.
A method for fabricating thick metallic mesh with a grid constant as low as 0.0025 in. and wall-thickness-to-depth aspect ratios greater than 5:1 is described. The method can be used to produce sharp cutoff submillimeter-wave filters and polarizers previously realizable only in thin screen form or on a dielectric backing. The uniformity and flatness of the final grids are competitive with those of any current fabrication method, and the relative simplicity of fabrication makes them cost effective in small quantities. The transmission curve of the free-standing mesh at normal incidence agrees well with the approximate analysis of C.C. Chen (1973). The behavior at other incident angles will be measured for grids having square and rectangular holes. Other applications for the fabrication process include high-aspect- ratio screens containing any electroformable hole pattern or shape and three- dimensional cagelike structures which could be formed from silicon cubes.<<ETX>>
0.22 THz sheet beam traveling wave tube amplifier (TWTA) circuits fabricated by microelectro mechanical system (MEMS) processes are under investigation for submillimeter wave applications. Currently, we are investigating three different methods; KMPR UV-LIGA and nano CNC machining. Eigenmode transient simulations show that, accounting for realistic values of our currently achievable fabrication tolerances, the transmission, and dispersion properties of the operation modes of a TE-mode, staggered, double grating circuit are maintained within less than 1 dB and 2% deviation, respectively. Scanning electron microscopy and atomic force microscopy analyses of the fabricated circuit samples demonstrate that both of the MEMS fabrication approaches produce circuits with ± 3 - 5 μm dimensional tolerance and ~ 30 nm surface roughness. Currently, the fabricated circuits are being cold-tested and process conditions will be re-adjusted with respect to a test result for optimization.
A micromechanical planar tuning element has been developed and demonstrated in a fully monolithic 620-GHz integrated circuit. It allows for the mechanical variation of the electrical length of a coplanar transmission line tuner and is called a sliding planar backshort (SPB). It consists of a movable patterned rectangular metal plate confined by polyimide flanges along two of its edges to allow guided linear translation along the length of a dielectric-coated coplanar transmission line. Its fabrication involves an application of sacrificial-layer and molding techniques to materials and processes which are compatible with the fabrication of a wide range of submillimeter-wave integrated circuits. This is the first reported micromechanically adjustable tuning element demonstrated at submillimeter wavelengths.
A novel slow wave vacuum electron device circuit, the so-called ldquoBarnett- Shin traveling wave tube (TWT) circuitrdquo, which consists of a half-period- staggered double vane array and a high aspect ratio sheet beam, has been conceived for high power millimeter and submillimeter wave amplification/ oscillation applications requiring extremely wide bandwidth as well as compact size and light weight. Particle-in-cell simulations based on a finite- difference-time-domain algorithm have shown that this circuit has a very wide intrinsic bandwidth (in excess of 50 GHz around the operating frequency of 220 GHz) with a moderate gain of 13 dB. Also, the saturated electronic conversion efficiency is 3 ~ 5.5%, which corresponds to radiation power of 150 ~ 275 W, assuming a beam power of 5 kW. Of particular importance, this structure is based on TE-fundamental mode interaction, which can avoid complex overmoding instability usually causing spurious signal oscillations in the conventional high aspect ratio structure. Moreover, this planar circuit has a simple two- dimensional geometry so as to be thermally and mechanically robust as well as compatible with conventional micro-fabrication techniques. This concept will open promising opportunities in potential applications of versatile electronic devices to the millimeter and submillimeter wave region.
An electronically tunable compact submillimeter wave transmission/reflection measurement system has been demonstrated at 560-635 GHz. The measured dynamic range is as high as 90 dB (60 dB across the entire frequency range), with less than 2deg of peak phase noise. The frequency agility of the system can be exploited to provide near real-time imaging capability using only a single pixel. This is accomplished by scanning the transmit and receive beams through the use of a frequency steerable lens placed at the transmitter and receiver.
The National Institute of Information and Communications Technology (NICT, Japan) started the Terahertz Project in April 2006. Its fundamental purpose in the next five years is to enable a nationwide technical infrastructure to be created for diverse applications of terahertz technology. The technical infrastructure includes the development of semiconductor devices such as terahertz quantum cascade lasers, terahertz-range quantum well photodetectors, and high-precision tunable continuous wave sources. It also includes pulsed terahertz measurement systems, modeling and measurement of atmospheric propagation, and the establishment of a framework to construct a materials database in the terahertz range including standardization of the measurement protocol. These are common technical infrastructure even in any terahertz systems. In this article, we report the current status of developments in these fields such as terahertz quantum cascade lasers (THz-QCLs) (with peak power of 30 mW, 3.1 THz), terahertz-range quantum well photodetectors (THz- QWPs) (tuned at 3 THz) an ultrawideband terahertz time domain spectroscopy (THz-TDS) system (with measurement range of from 0.1 to 15 THz), an example of a database for materials of fine art, and results obtained from measuring atmospheric propagation.
Membrane-supported circuits (also known as dielectric-less circuits) have been well known for their negligible dielectric losses and for their allowance of relaxed dimensional tolerances in high-frequency circuit design. However, thus far, most of the commonly known silicon-based membrane-processing technologies require intensive and time-consuming thermal processing. This paper reports a simple but economical processing technique for production of self-supporting polymer-membrane-based printed circuits. Based on a pre-processed copper-on- polymer-membrane board, a planar millimeter/submillimeter wave component can be rapidly prototyped on a 5 /spl mu/m thick polymer membrane with conventional photolithographical processing equipment. The simplicity of the process makes this technology particularly suitable for mass production of millimeter wave or sub-millimeter wave components. Vector-network-analyzer measurement reveals that the transmission losses of general E-plane components are typically less than 0.5 dB/cm across W-band.
Quasi-optical filters consisting of iterations of dielectric slabs housed in oversized rectangular waveguide are described. Filters consisting of dielectric slabs separated by air of the same electrical length have been analyzed and constructed for the cases of normal incidence (two-port filters) and 45° incidence (four-port filters). The two-port filters have low-pass properties while the four-port filter has simultaneous low and high-pass properties. Experimental data on 9 mm and 0.9 mm models have shown good agreement with the theory, thus demonstrating their use as filters for millimeter and submillimeter wavelengths.
No standards are currently tagged "Submillimeter wave propagation"