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Proceedings of the IEEE

Issue 1 • Date Jan 1992

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Displaying Results 1 - 18 of 18
  • Millimeter wave antennas

    Publication Year: 1992, Page(s):92 - 102
    Cited by:  Papers (27)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1164 KB)

    Major advances in millimeter-wave antennas have been made in recent years, in particular in two areas. A new class of leaky-wave antennas based on open millimeter waveguides has been proposed and investigated, and substantial progress has been achieved in integrated antennas where active and passive circuits, possibly in monolithic form, are combined with the radiating elements in one compact unit... View full abstract»

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  • Basic array theory

    Publication Year: 1992, Page(s):127 - 140
    Cited by:  Papers (49)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    Basic antenna array theory is outlined with major emphasis on pattern analysis and synthesis for periodic linear and planar arrays, phased arrays, and conformal arrays. Extension is made to synthesis techniques which use computer algorithms. These include arbitrary sidelobe control, shaped beams, and phase-only null steering. The subjects of random errors and phased array quantization errors are o... View full abstract»

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  • Satellite antennas

    Publication Year: 1992, Page(s):183 - 193
    Cited by:  Papers (13)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (868 KB)

    Communication satellites have evolved from a radio relay in space to encompass other applications such as processing and meteorology. The demand for high capacity communication satellites has led in the past two decades to the development of multibeam antennas, a landmark in satellite antenna technology. Satellite antennas are classified into three categories according to function: communication; ... View full abstract»

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  • Optically sensed EM-field probes for pulsed fields

    Publication Year: 1992, Page(s):209 - 215
    Cited by:  Papers (19)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The characteristics of photonic probes that give them the potential to measure pulsed electromagnetic fields more accurately than has been possible in the past are discussed. An overview of system design is presented with particular emphasis on the transfer functions of appropriate antennas and electrooptic modulators. Noise sources which limit the sensitivity to low signals are discussed and used... View full abstract»

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  • Microstrip antennas

    Publication Year: 1992, Page(s):79 - 91
    Cited by:  Papers (383)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1240 KB)

    Microstrip antennas have been one of the most innovative topics in antenna theory and design in recent years, and are increasingly finding application in a wide range of modern microwave systems. This paper begins with a brief overview of the basic characteristics of microstrip antennas, and then concentrates on the most significant developments in microstrip antenna technology that have been made... View full abstract»

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  • The current state of the reflector antenna are-entering the 1990s

    Publication Year: 1992, Page(s):113 - 126
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2560 KB)

    Modern reflector theory and practice, with emphasis on the recent past are reviewed. Included are a brief historical review and performance definitions for the nonspecialist. Special sections are devoted to shaped multiple reflectors, reflector surface metrology, and reflectors for the next decade and beyond. In spite of decreasing budgets for scientific, commercial, and military space programs, t... View full abstract»

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  • Adaptive processing array systems

    Publication Year: 1992, Page(s):152 - 162
    Cited by:  Papers (29)  |  Patents (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    Adaptive array systems have undergone enormous growth and progress in the past two decades. Because this multidiscipline technology area is both complex and mathematics intensive, it often appears alien (and perhaps impractical) to the nonspecialist. To help bridge those gaps, this tutorial paper has been and limited to just three principal topic areas: sidelobe cancellers, fully adaptive arrays, ... View full abstract»

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  • Array technology

    Publication Year: 1992, Page(s):173 - 182
    Cited by:  Papers (19)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    A review of advances in devices and components applicable to modern phased arrays is given. Phase shifters as well as solid-state transmit/receive modules are discussed. Approaches to cost reduction using higher levels of integration (different packaging approaches) and new materials are also covered View full abstract»

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  • Antennas on complex platforms

    Publication Year: 1992, Page(s):204 - 208
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The modeling of antennas on complex platforms is reviewed. The objective is to analyze the modification of the basic antenna performance due to its environment. This includes pattern distortion, antenna to antenna spacial coupling, and radiation hazard predictions. High frequency methods are used to develop computer codes to accomplish these tasks. Several types of generally available codes are di... View full abstract»

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  • Overview of selected hybrid methods in radiating system analysis

    Publication Year: 1992, Page(s):66 - 78
    Cited by:  Papers (56)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    In many situations it is not sufficient to know the performance of an antenna in isolation, but instead it is necessary to know the performance characteristics of the antenna on, or in proximity to, another body or platform. Hybrid techniques which use the method of moments (MM) to treat part of the problem and some other method to account for the (usually larger) reminder are examined. In the MM/... View full abstract»

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  • Frequency-independent antennas and broad-band derivatives thereof

    Publication Year: 1992, Page(s):103 - 112
    Cited by:  Papers (51)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    The principles used in the development of frequency-independent antennas are reviewed. Examples of log-periodic (LP) geometry and the additional requirements that must be met for practical success are given. The evolution of unidirectional, wire-outline, and dipole arrays is presented. Analytical results for LP dipole arrays led to the concept of an active region that remains almost fixed in size ... View full abstract»

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  • Array pattern control and synthesis

    Publication Year: 1992, Page(s):141 - 151
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    Antenna array distributions and their associated patterns are now designed on physical principles, based on placement of zeros of the array polynomial. An overview of the synthesis processes is given. Robust and low Q distributions for linear arrays and circular planar arrays that provide variable sidelobe level pencil beam patterns are treated in detail. Associated difference patterns ar... View full abstract»

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  • Antennas and other electromagnetic applicators in biology and medicine

    Publication Year: 1992, Page(s):194 - 199
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    Medical and biological applications of antennas can be classified into two broad groups: (1) therapeutic and (2) informational (including diagnostics and measurement of material electromagnetic (EM) properties). Most of these applications involve EM coupling into or out of the body which requires a device such as an antenna or other applicator. A common characteristic of many applications is the d... View full abstract»

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  • Antenna array architecture

    Publication Year: 1992, Page(s):163 - 172
    Cited by:  Papers (23)  |  Patents (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    An abbreviated view of the topics included in modern array architecture is presented. The broad subject of architecture includes all the electromagnetic, thermal and mechanical aspects that need to be addressed by the array design team. The emphasis is on the interaction between the selection of an array aperture organization, corporate feeds, devices and elements, and a discussion of EHF monolith... View full abstract»

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  • Antenna theory: a review

    Publication Year: 1992, Page(s):7 - 23
    Cited by:  Papers (62)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1400 KB)

    In this review the author traces the history of antennas and some of the most basic radiating elements, demonstrates the fundamental principles of antenna radiation, reviews Maxwell's equations and electromagnetic boundary conditions, and outlines basic procedures and equations of radiation. Modeling of antenna source excitation is illustrated, and antenna parameters and figures-of-merit are revie... View full abstract»

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  • Antennas in the geophysical environment-some examples

    Publication Year: 1992, Page(s):200 - 203
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    In this brief review, the interaction of antennas with the ambient medium is addressed. Beginning with a simple model, it is shown that the frequency and distance dependence is a strong function of the medium properties. A borehole experiment is described and related schemes are discussed both from the telecommunications and the remote sensing points of view View full abstract»

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  • Low-frequency computational electromagnetics for antenna analysis

    Publication Year: 1992, Page(s):24 - 43
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1672 KB)

    An overview of computational methods for modeling the low-frequency electromagnetic characteristics of antennas is given. Presented first is a brief analytical background that forms the basis for numerically solving low-frequency antenna problems using the method of moments. Next discussed are extensions to modeling perfectly conducting objects in free space, followed by a consideration of some co... View full abstract»

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  • High frequency techniques for antenna analysis

    Publication Year: 1992, Page(s):44 - 65
    Cited by:  Papers (62)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1808 KB)

    A summary of various high-frequency techniques is presented for analyzing the electromagnetic radiation from antennas in the presence of their host environment. These techniques provide physical insight into antenna radiation mechanisms and are found to be highly efficient and accurate for treating a variety of practical antenna configurations. Examples to which these techniques have been applied ... View full abstract»

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Editor-in-Chief
H. Joel Trussell
North Carolina State University