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Broadband Antennas for the Double Quantum Well ...
58,99 € *
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Broadband Antennas for the Double Quantum Well Terahertz Detector ab 58.99 € als Taschenbuch: Terahertz Detector. Aus dem Bereich: Bücher, Wissenschaft, Technik,

Anbieter: hugendubel
Stand: 14.08.2020
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Broadband Antennas for the Double Quantum Well ...
58,99 € *
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Broadband Antennas for the Double Quantum Well Terahertz Detector ab 58.99 EURO Terahertz Detector

Anbieter: ebook.de
Stand: 14.08.2020
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Coherent radiation generation by lasers and par...
67,90 € *
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This book presents a theoretical investigation of coherent radiation generation by particle beams and nonlinear mixing of lasers. The focus is on the broadband generation of microwaves and terahertz waves by power enhancement in sheath helix loaded travelling wave tube, introducing plasmas in the interaction region. In the terahertz band we examine the resonant excitation of terahertz radiation by beating two Gaussian laser beams in a magnetized plasma channel. As an alternative route we study the nonlinear mixing of two infrared lasers of frequencies and propagating in the TM/TE mode in a rippled density semiconductor waveguide to resonantly excite terahertz radiation. Two parallel semiconductor plates, separated by a short distance, are seen to be suitable for the excitation of Terahertz waves by a mildly relativistic electron beam. A relativistic sheet electron beam propagating through the space between the planes resonantly excites a THz surface plasma wave (SPW). The efficacy of n-InSb is examined for linear mode conversion of terahertz radiation into a surface plasma wave. The semiconductor surface is taken to be rippled and magnetized.

Anbieter: Dodax
Stand: 14.08.2020
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Broadband Antennas for the Double Quantum Well ...
59,00 € *
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This work is focused on realizing terahertz detectors based on the idea of photon-assisted tunneling (PAT) in the double electron layer tunneling transistor (DELTT). The detector employs a broadband antenna integrated lithographically with the DELTT. The antenna should be broadband to take full advantage of the electrically tunable characteristic of the DELTT device. This work deals with the analysis and design of broadband antennas to efficiently couple THz radiation to the DELTT device. Numerous bowtie and log-periodic antenna structures have been designed and simulated that have broadband impedance characteristics. The electromagnetic simulator IE3D is used to perform simulations. Measurements on sample antennas were also performed to examine the agreement between simulation and experimental results. A key feature of this work is the development of an equivalent circuit model for the combined antenna and the DELTT device that could be valid at THz frequencies. The development of such a model is extremely important to match the antenna impedance to the device impedance, which is key to enhance the coupling efficiency.

Anbieter: Dodax
Stand: 14.08.2020
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Advances in Broadband Communication and Networks
172,00 CHF *
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Broadband communications has become the major focus for industry for offering rich multimedia IP services in next generation networks. Advances in Broadband Communication and Networks deals with the state-of-the-art and the underlying principles of key technologies which facilitate broadband telecommunications. This includes millimetre wave gigabit Ethernet, terahertz communication, multiple input multiple output (MIMO) technology, orthogonal frequency division multiplex (OFDM), ultra wideband (UWB) and the fourth generation (4G) network technologies. The book illustrates the use of these technologies, including high resolution three-dimensional millimetre wave radar imaging and terahertz imaging techniques. Within the next few years advances in graphic rendering and the application of millimetre wave radar technology will enable high resolution radar surveillance and operators of industrial processes to control their machines and to navigate remotely even in poor visibility environments. The principles and performance of terahertz imaging are also demonstrated. The performance and success of emerging all-IP networks depend largely on the efficiency of broadband technologies the authors provide the basis for 4G networks and explore key performance measures such as quality of service and handover between distributed networks (mobile and fixed). The book also demonstrates the medical and biomedical applications of broadband wireless communications.

Anbieter: Orell Fuessli CH
Stand: 14.08.2020
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Advances in Broadband Communication and Networks
127,99 € *
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Broadband communications has become the major focus for industry for offering rich multimedia IP services in next generation networks. Advances in Broadband Communication and Networks deals with the state-of-the-art and the underlying principles of key technologies which facilitate broadband telecommunications. This includes millimetre wave gigabit Ethernet, terahertz communication, multiple input multiple output (MIMO) technology, orthogonal frequency division multiplex (OFDM), ultra wideband (UWB) and the fourth generation (4G) network technologies. The book illustrates the use of these technologies, including high resolution three-dimensional millimetre wave radar imaging and terahertz imaging techniques. Within the next few years advances in graphic rendering and the application of millimetre wave radar technology will enable high resolution radar surveillance and operators of industrial processes to control their machines and to navigate remotely even in poor visibility environments. The principles and performance of terahertz imaging are also demonstrated. The performance and success of emerging all-IP networks depend largely on the efficiency of broadband technologies the authors provide the basis for 4G networks and explore key performance measures such as quality of service and handover between distributed networks (mobile and fixed). The book also demonstrates the medical and biomedical applications of broadband wireless communications.

Anbieter: Thalia AT
Stand: 14.08.2020
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