Conferences related to Cavity resonators

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


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 Radio and Wireless Symposium (RWS)

RWW2020 will be an international conference covering all aspects of radio and wireless. RWW2020's multidisciplinary events will bring together innovations that are happening across the broad wireless spectrum. RWS2020, this conference application, acts as the main conference for the entire RWW of events that includes the following conferences: PAWR2020, SiRF2020, WiSNet2020, and TWiOS2020 (IEEE Topical Conference on RF/microwave Power Amplifiers, IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, IEEE Topical Conference on Wireless Sensors and Sensor Networks, and IEEE Topical Workshop on the Internet of Space IoS, respectively). In addition to traditional podium presentations and poster sessions, tracks for IEEE Distinguished Lectures, Sunday half-day workshops, Monday panels, and a demo session are planned. A RWW2020 plenary talk are a parallel IoT Summit are planned. A student competition is also planned.

  • 2019 IEEE Radio and Wireless Symposium (RWS)

    This is a conference with a focus on wireless components, applications, and systems that impact both our current and future life style. The conference's main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today's design compromises can trigger tomorrow's advanced technologies. Where dreams can become a reality. RWS is the cornerstone conference for Radio Wireless Week.

  • 2018 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today’s design compromises can trigger tomorrow’s advanced technologies. Where dreams can become a reality.

  • 2017 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today’s design compromises can trigger tomorrow’s advanced technologies. Where dreams can become a reality.

  • 2016 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be bench-marked against the needs of circuit designers at the bleeding edge of RF systems, where today

  • 2015 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today

  • 2014 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state -of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2013 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state-of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2012 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state-of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2011 IEEE Radio and Wireless Symposium (RWS)

    All aspects of components and systems related to radio and wireless networks.

  • 2010 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss various aspects of wireless communication systems and the state-of-the-art in both fields by exploring the connections between hardware design and system performance.

  • 2009 IEEE Radio and Wireless Symposium (RWS)

    This symposium highlights the state of the art of hardware and systems of radio and wireless

  • 2008 IEEE Radio and Wireless Symposium (RWS)

  • 2007 IEEE Radio and Wireless Symposium (RWS)

  • 2006 IEEE Radio and Wireless Symposium (RWS)

  • 2004 IEEE Radio and Wireless Conference - (RAWCON 2004)

  • 2003 IEEE Radio and Wireless Conference - (RAWCON 2003)

  • 2002 IEEE Radio and Wireless Conference - (RAWCON 2002)

  • 2001 IEEE Radio and Wireless Conference - (RAWCON 2001)

  • 2000 IEEE Radio and Wireless Conference - (RAWCON 2000)

  • 1999 IEEE Radio and Wireless Conference - (RAWCON '99)

  • 1998 IEEE Radio and Wireless Conference - (RAWCON '98)


2020 IEEE/MTT-S International Microwave Symposium (IMS)

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.

  • 2036 IEEE/MTT-S International Microwave Symposium - IMS 2036

    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.

  • 2031 IEEE/MTT-S International Microwave Symposium - IMS 2031

    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.

  • 2029 IEEE/MTT-S International Microwave Symposium - IMS 2029

    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.

  • 2026 IEEE/MTT-S International Microwave Symposium - IMS 2026

    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.

  • 2025 IEEE/MTT-S International Microwave Symposium - IMS 2025

    The IEEE International Microwave Symposium (IMS) is the world s foremost conferencecovering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies;encompassing everything from basic technologies to components to systems including thelatest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulationand more. The IMS includes technical and interactive sessions, exhibits, student competitions,panels, workshops, tutorials, and networking events.

  • 2024 IEEE/MTT-S International Microwave Symposium - IMS 2024

    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.

  • 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023

    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.

  • 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022

    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.

  • 2021 IEEE/MTT-S International Microwave Symposium - IMS 2021

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.

  • 2019 IEEE/MTT-S International Microwave Symposium - IMS 2019

    Comprehensive symposium on microwave theory and techniques including active and passive circuit components, theory and microwave systems.

  • 2018 IEEE/MTT-S International Microwave Symposium - IMS 2018

    Microwave theory and techniques, RF/microwave/millimeter-wave/terahertz circuit design and fabrication technology, radio/wireless communication.

  • 2017 IEEE/MTT-S International Microwave Symposium - IMS 2017

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.

  • 2016 IEEE/MTT-S International Microwave Symposium - IMS 2016

    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.

  • 2015 IEEE/MTT-S International Microwave Symposium - MTT 2015

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics. The IMS includes technical sessions, both oral and interactive, worksh

  • 2014 IEEE/MTT-S International Microwave Symposium - MTT 2014

    IMS2014 will cover developments in microwave technology from nano devices to system applications. Technical paper sessions, interactive forums, plenary and panel sessions, workshops, short courses, industrial exhibits, and a wide array of other technical activities will be offered.

  • 2013 IEEE/MTT-S International Microwave Symposium - MTT 2013

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter -wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2012 IEEE/MTT-S International Microwave Symposium - MTT 2012

    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.

  • 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011

    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.

  • 2010 IEEE/MTT-S International Microwave Symposium - MTT 2010

    Reports of research and development at the state-of-the-art of the theory and techniques related to the technology and applications of devices, components, circuits, modules and systems in the RF, microwave, millimeter-wave, submillimeter-wave and Terahertz ranges of the electromagnetic spectrum.

  • 2009 IEEE/MTT-S International Microwave Symposium - MTT 2009

    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.

  • 2008 IEEE/MTT-S International Microwave Symposium - MTT 2008

  • 2007 IEEE/MTT-S International Microwave Symposium - MTT 2007

  • 2006 IEEE/MTT-S International Microwave Symposium - MTT 2006

  • 2005 IEEE/MTT-S International Microwave Symposium - MTT 2005

  • 2004 IEEE/MTT-S International Microwave Symposium - MTT 2004

  • 2003 IEEE/MTT-S International Microwave Symposium - MTT 2003

  • 2002 IEEE/MTT-S International Microwave Symposium - MTT 2002

  • 2001 IEEE/MTT-S International Microwave Symposium - MTT 2001

  • 2000 IEEE/MTT-S International Microwave Symposium - MTT 2000

  • 1999 IEEE/MTT-S International Microwave Symposium - MTT '99

  • 1998 IEEE/MTT-S International Microwave Symposium - MTT '98

  • 1997 IEEE/MTT-S International Microwave Symposium - MTT '97

  • 1996 IEEE/MTT-S International Microwave Symposium - MTT '96


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Periodicals related to Cavity resonators

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


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


Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


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Xplore Articles related to Cavity resonators

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Utilization of wave-guide-dielectric and cylindrical cavity resonators for dielectric parameters measurement at SHF

2004 7th International Conference on Actual Problems of Electronic Instrument Engineering Proceedings, 2004. APEIE 2004., 2004

The experimental results of the implementation of methods of wave-guide- dielectric resonator (in frequency range 3- 18 GHz) and cylindrical cavity resonator (at fixed frequency 9.365 GHz) for the measurement of relative dielectric permittivity and dielectric losses in polyethylene, fluorplast-4, optical quartz glass KV are presented


Other Applications of Optical Solitons

Nonlinear Effects in Optical Fibers, None

None


Removable EBG Common Mode Filters

Electromagnetic Bandgap (EBG) Structures: Common Mode Filters for High Speed Digital Systems, None

Subsequent to the introduction of the onboard electromagnetic bandgap (EGB)‐based common mode filters, this chapter describes their evolution to removable EBG‐based common mode (R‐EBG CM) filters. This chapter describes the different topologies available for the removable EBG filters, ranging from the configuration with the traces kept on the main printed circuit board (PCB) to the one with the differential pair ...


Influence of Random Bulk Inhomogeneities on Quasioptical Cavity Resonator Spectrum

2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW), 2007

In this paper, the physical nature of the broadening and the shift of spectral lines of the quasi-optical cavity resonator filled with randomly distributed bulk inhomogeneities has been studied both theoretically and experimentally. The inhomogeneities quasioptical cavity millimeter wave resonator (passive and active) can serve as model of semiconductor quantum billiard. Based on our results we suggest using quantum billiard ...


Components and Subsystems

Wavelength Division Multiplexing: A Practical Engineering Guide, None

End‐to‐end wavelength division multiplexing (WDM) transmission consists of a transmitter, a transmission channel, and a receiver. The transmission channel in all relevant WDM applications consists of a silica single‐mode fiber (SMF). This chapter describes the different SMF types, and discusses the several functional stages of WDM transmitters and receivers. It focuses on the photodetectors (photodiodes) and the associated active electronics. ...


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Educational Resources on Cavity resonators

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IEEE-USA E-Books

  • Utilization of wave-guide-dielectric and cylindrical cavity resonators for dielectric parameters measurement at SHF

    The experimental results of the implementation of methods of wave-guide- dielectric resonator (in frequency range 3- 18 GHz) and cylindrical cavity resonator (at fixed frequency 9.365 GHz) for the measurement of relative dielectric permittivity and dielectric losses in polyethylene, fluorplast-4, optical quartz glass KV are presented

  • Other Applications of Optical Solitons

    None

  • Removable EBG Common Mode Filters

    Subsequent to the introduction of the onboard electromagnetic bandgap (EGB)‐based common mode filters, this chapter describes their evolution to removable EBG‐based common mode (R‐EBG CM) filters. This chapter describes the different topologies available for the removable EBG filters, ranging from the configuration with the traces kept on the main printed circuit board (PCB) to the one with the differential pair transitioning into the removable EBG. The removable EBG concept is powerful and can help many potential electromagnetic compatibility (EMC) issues. Among the various possible parameters, the impact of the number of patches forming the removable EBG geometry plays a significant role and is presented in this chapter. The chapter discusses the design of more elaborate removable EBG CM filters with two specific design examples. The first consideration addresses the reduction of the filter dimensions and therefore the space required on the main board. The second consideration concerns the trade‐off between notch depth and notch bandwidth.

  • Influence of Random Bulk Inhomogeneities on Quasioptical Cavity Resonator Spectrum

    In this paper, the physical nature of the broadening and the shift of spectral lines of the quasi-optical cavity resonator filled with randomly distributed bulk inhomogeneities has been studied both theoretically and experimentally. The inhomogeneities quasioptical cavity millimeter wave resonator (passive and active) can serve as model of semiconductor quantum billiard. Based on our results we suggest using quantum billiard with spectrum rarefied by random inhomogeneities as an active system of semiconductor laser.

  • Components and Subsystems

    End‐to‐end wavelength division multiplexing (WDM) transmission consists of a transmitter, a transmission channel, and a receiver. The transmission channel in all relevant WDM applications consists of a silica single‐mode fiber (SMF). This chapter describes the different SMF types, and discusses the several functional stages of WDM transmitters and receivers. It focuses on the photodetectors (photodiodes) and the associated active electronics. In high‐speed WDM transmission, almost exclusively photodiodes are used as photodetectors. The chapter considers the commonly used PIN photodiodes and avalanche photodiodes (APDs). In order to increase the transmission distance or to allow other transmission impairments, forward error correction (FEC) can be applied to the signal. FEC allows the operation of the optical transmission at a higher BER, while maintaining payload data integrity. Electronic distortion compensation (e.g., CD compensation) is an alternative to analog optical compensation.

  • Fluid flow in continuous casting mold with a configured nozzle

    The influence of a configured nozzle on the turbulent fluid flow in a continuous casting mold was investigated using the simulation program Visual Cast, which used the finite difference method and the SIMPLER algorithm. CAD software was used to construct the complicated nozzle in the calculational region. The simulation accuracy was validated by comparison with the classic driven cavity flow problem. The simulation results agree well with water modeling experiments. The simulations show that the velocity distribution at the nozzle port is uneven and the jet faces downward more than the nozzle outlet. Simulations with a configured nozzle and the inlet velocity at the nozzle entrance give precise results and overcome the traditional difficulty in determining the nozzle outlet velocity.

  • Optoelectronic devices

    None

  • Exact radiation of a dipole in the presence of a circular aperture in a ground plane backed by a spheroidal cavity and covered with an isorefractive diaphragm

    An oblate semispheroidal cavity with metallic walls flush-mounted under a metallic ground plane is coupled to the half-space above the ground plane through an aperture that corresponds to the interfocal disk of the oblate spheroidal system. A diaphragm is located across the aperture. The diaphragm material, the material filling the cavity, and the half-space are isorefractive to each other. A new exact solution is obtained for the radiation of an electric or a magnetic dipole located on the symmetry axis of the structure and axially oriented. The exact solution is expressed in terms of series containing oblate spheroidal functions. These series are evaluated to provide a benchmark solution for a primary source located either inside the cavity below the diaphragm or outside the cavity in the unbounded medium.

  • Introduction

    The characteristic mode (CM) theory is a relatively new topic in the antenna community. The great potential of the CM theory in antenna engineering has not been widely recognized until 2000. In this chapter, several well‐known modal analysis methods for particular antenna problems are reviewed first. It helps the readers have a preliminary knowledge about what modal analysis talks about. It also illustratively shows how these modal analysis methods can help in practical antenna design. Next, we address the fundamental question: why the characteristic modes were proposed and what are characteristic modes? The primary features of the CMs are then followed. A history review for developments and applications of the CM theory in antenna engineering are also presented. Finally, we briefly introduce many CM variants for different radiation/scattering structures and materials. The details of these CM variants will be described in Chapters , , , .

  • A resonant-cavity method for measuring dielectric properties at ultrahigh frequencies

    A re-entrant cylindrical cavity has been adapted to measure the dielectric constant and power factor of small disk samples of insulating materials. The methods of measurement, mechanical details, and electric coupling and detecting circuits all are described. A single cavity can be utilized only over a frequency range of about 1.5 ratio from lowest to highest frequency. Therefore, several different-sized cavities would be required to cover a range of frequency from 50 to 1,000 megacycles. An accuracy of = 0.00005 in tan δ and = 1 per cent in dielectric constant may be obtained in routine measurements. Because the cavity has a very high Q(&>2,000), it is much more sensitive to low-power-factor dielectric samples than any conventional coil- and-capacitor resonant circuit.



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