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Full-wave modeling of via hole grounds in microstrip by three-dimensional mode matching technique

Full-wave modeling of via hole grounds in microstrip by thre...

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Microwave, MTT-S International Symposium

作者： F. Alessandri M. Mongiardo R. Sorrentino Microdesign s.a.s. Rome Italy Dipartimento di Ingegneria Eiettronica Università di Roma Tor Vergata Rome Italy Istituto di Elettronica Università di Perugia S Lucia Canetola Perugia Italy

A rigorous full-wave analysis of microstrip via hole grounds is performed using a three-dimensional mode-matching method by means of a suitable segmentation technique. Theoretical results are compared with measured data, showing an excellent agreement. Comparisons with available approximate methods have also been made to exploit their limits of validity.< >

关键词： Microstrip Magnetic analysis Magnetic separation Strips Printed circuits Planar waveguides rectangular waveguides Waveguide discontinuities Region 1 Magnetic fields

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Theory and design of slot arrays fed by single-ridge rectangular waveguide

Theory and design of slot arrays fed by single-ridge rectang...

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Antennas and Propagation Society International Symposium

作者： D. Kim R. Elliott Missile Antenna Department Rantec Division Emerson Electric Company Calabasas CA USA University of California Los Angeles CA USA

When slots are arranged in arrays, mutual coupling between slots cannot be ignored if a good match and pattern are to be obtained. A theory has been developed for slot arrays in single-ridge rectangular waveguide so that the length and offset of every slot in the array can be determined for a specified aperture distribution and input match in the presence of mutual coupling.

关键词： rectangular waveguides Waveguide theory Slot antennas Voltage Reflector antennas Arrayed waveguide gratings Planar waveguides Equations Antenna arrays Mutual coupling

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WR-1.0 band waveguide band-pass filter based on micromachining technique

WR-1.0 band waveguide band-pass filter based on micromachini...

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International Conference on Computational Problem-Solving (ICCP)

作者： Shuang Liu Jiang Hu Yong Zhang Yangfan Zhou Dan Lei Li Li Wei Zhao Ruimin Xu Fundamental Science on EHF Laboratory University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781479942442

WR-1.0 rectangular waveguide cavity band-pass filter based on micromachining technique is designed in this letter. The filter consists of two resonant cavities. A transmission zero is implemented by means of broaden stubs. The stub is broaden to the width of the resonant cavity, which simplify the fabrication. The proposed filter is fabricated using the deep reactive ion etching (DRIE) micromachining on silicon wafers, with sputtered gold inner and outer surface metallization. Using Ansoft HFSS, the center frequency of filter is 0.9THz and the transmission zero is at 0.921THz. The structure is a viable option for designs of waveguide filters at THz frequency. Effects of the DRIE process brought to the filter characteristics are also discussed in detail.

关键词： Band-pass filters Filtering theory Resonator filters Silicon Micromachining rectangular waveguides Gold

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The Design of Ka-band LTCC Slot Antenna

The Design of Ka-band LTCC Slot Antenna

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2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)

作者： Jing Fei Bo Yan Department of Microwave Engineering College of Electronic Engineering University of Electronic Science and Technology of China Chengdu Sichuan 610054 China

The design of Low-Temperature Co-fired Ceramic (LTCC) multi-layer slot antenna was introduced,which is based on classical design theory of slot antenna and LTCC *** to full-wave electro-magnetic (EM) simulation,the sl... 详细信息

关键词： Slot antennas Microstrip antennas Microwave antennas Antenna radiation patterns Antenna theory Microstrip antenna arrays rectangular waveguides Dielectric substrates Etching Apertures

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Development of substrate integrated waveguide power dividers

Development of substrate integrated waveguide power dividers

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Canadian Conference on Electrical and Computer Engineering (CCECE)

作者： S. Germain D. Deslandes K. Wu Poly-GRAMES Research Center Ecole Polytechnique de Montreal Montreal QUE Canada

Two classes of substrate integrated waveguide (SIW) power divider are presented, namely, Y- and T-types. Using arrays of via, the SIW power dividers and microstrip transitions are integrated on the same substrate. Design models are presented respectively for the Y- and T-junctions. Experimental results over the Ka band are given for both structures. The Y-junction shows a bandwidth of 25.2% at -18.5 dB while the T-junction shows a bandwidth of 10.2% at -19.0 dB.

关键词： Power dividers Waveguide junctions rectangular waveguides Bandwidth Millimeter wave integrated circuits Millimeter wave technology Waveguide components Frequency Design optimization Planar waveguides

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Analysis of rectangular anisotropic dielectric waveguide structures

Analysis of rectangular anisotropic dielectric waveguide str...

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Antennas and Propagation Society International Symposium

作者： C.L.d.S.S. Sobrinho A.J. Giarola Department Electrical Engineering Federal University of Para Belem Para Brazil

The finite-difference method is used in the analysis of rectangular anisotropic waveguide structures. A formulation that was first applied to isotropic dielectric channels diffused into an isotropic dielectric is extended to include anisotropic dielectric channels and anisotropic substrates. This formulation makes it possible to analyze not only the step index of refraction profiles but also arbitrarily varying index profiles. Examples of practical interest are shown, and the results are compared with those obtained from other methods.< >

关键词： Anisotropic magnetoresistance Dielectrics rectangular waveguides Magnetic anisotropy Perpendicular magnetic anisotropy Magnetic analysis Permeability Magnetic fields Tensile stress PROM

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A W-band, Microfabricated, Tiled Phased Array Realized by Bricked Tapered Slot Antenna Element

A W-band, Microfabricated, Tiled Phased Array Realized by Br...

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IEEE International Symposium on Antennas and Propagation

作者： Jian Xu Sun Yu Jian Cheng Yong Fan EHF Key Laboratory of Fundamental Science School of Electronic Science and Engineering University of Electronic Science and Technology of China (UESTC) Chengdu China

ISBN: (纸本)9781728146713

In this paper, a microfabricated W-band tapered slot antenna (TSA) integrated with a rectangular micro-coaxial line (RμCL) to substrate integrated waveguide (SIW) transition is proposed. To integrate the vertical end-fire TSA array with the horizontally planar feed network in W-band, the transition from an SIW to an RμCL is designed. Then, a linear TSA array is built and achieves a bandwidth from 85 to 100 GHz (S_(11)<-10 dB), which can be expanded to a two-dimensional scanning array. The linear array prototype is then fabricated and measured. The measured results show good agreement with the simulated results.

关键词： Phased arrays Antenna measurements Waveguide transitions Slot antennas Meetings rectangular waveguides Prototypes

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Development of millimeter-waves in 1960s and 70s-its background and limitation

Development of millimeter-waves in 1960s and 70s-its backgro...

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URSI International Symposium on Signals, Systems, and Electronics (ISSSE)

作者： M. Akaike Science University of Tokyo Tokyo Japan

Millimeter-waves have been attracting new attention for versatile radio communications use. In the 1960s and 70s, the transmission of millimeter-waves by use of a circular waveguide was developed for post-coaxial and post-microwave transmission medium. After the invention of a semiconductor laser and an optical fiber in 1970, however, the millimeter-waves have handed over the mission as a main high-capacity and long-distance transmission medium to optical fibers. We review the millimeter-wave technology developed in the 60s and 70s, which gives new ideas for future further progress.

关键词： Semiconductor waveguides Millimeter wave technology Waveguide junctions Frequency Optical waveguides Propagation losses rectangular waveguides Coaxial components Optical fibers Semiconductor diodes

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Determination of TWT periodic delay line dispersion by means of coupled waveguide analysis

Determination of TWT periodic delay line dispersion by means...

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International Electron Devices Meeting (IEDM)

作者： D.G. Holstein N. Dionne A. Palevsky MPTD Raytheon Company Waltham MA USA

Phase dispersion of an alternate-slot coupled-cavity circuit suitable for use in TWTs (traveling-wave tubes) is determined by means of coupled mode theory. A circuit is modeled using the familiar waveguide elements: coaxial, cylindrical, and sector types. Their orthonormal modes are well known and form the basis vectors for constructing the possible delay line modes, both propagating and nonpropagating. Application of Floquet's theorem as a boundary condition results in a direct determination of the phase shift per period of the structure at arbitrary frequencies. Provision in the analysis for multiply connected waveguides enables beam-hole effects to be included. Dispersion properties at midband are computed to be within 0.5% of measured values.< >

关键词： Delay lines Coupling circuits Coaxial components Waveguide junctions Planar waveguides rectangular waveguides Maxwell equations Radio frequency Boundary conditions Dispersion

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Toward a novel planar circuit compatible silicon micromachined waveguide

Toward a novel planar circuit compatible silicon micromachin...

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IEEE Topical Meeting on Electrical Performance of Electronic Packaging (EPEPS)

作者： J.P. Becker L.P.B. Katehi Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA

A novel, completely packaged planar-fed silicon micromachined waveguide/resonator is proposed. Simulated results for a Ka-band resonator are given, along with initial results of the required three-dimensional photolit... 详细信息

关键词： Circuits Silicon Planar waveguides Electromagnetic waveguides Etching Dielectric losses Planar transmission lines rectangular waveguides Anisotropic magnetoresistance Resists

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