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Antennas and Propagation Magazine, IEEE

Issue 4 • Date Aug. 1996

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Displaying Results 1 - 8 of 8
  • Radiowave Propagation and Antennas for Personal Communications [Reviews and Abstracts]

    Publication Year: 1996
    Save to Project icon | Request Permissions | PDF file iconPDF (185 KB)  
    Freely Available from IEEE
  • Self-Complementary Antennas: Principle of Self-Complementarity for Constant Impedance [Reviews and A

    Publication Year: 1996
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    Freely Available from IEEE
  • Improving the performance of microstrip-patch antennas

    Publication Year: 1996 , Page(s): 7 - 12
    Cited by:  Papers (17)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (640 KB)  

    This paper describes a cavity-backed patch-antenna geometry, which features multiple dielectric layers and shorting posts. These features are exploited to design antennas which retain many of the desirable characteristics of conventional microstrip antennas, yet overcome some of their inherent disadvantages View full abstract»

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  • Modified rectangular patches for self-oscillating active-antenna applications

    Publication Year: 1996 , Page(s): 13 - 21
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (972 KB)  

    Two modifications to a rectangular-patch antenna, suitable for the integration of active devices, are presented. In the first modification, the impedance inverter was placed in the rectangular opening formed by removing the central part of the patch. This modification allows optimal matching of the active device by changing the position, width, and length of the impedance-line transformer. An osci... View full abstract»

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  • Advanced design of phased-array beam-forming networks

    Publication Year: 1996 , Page(s): 22 - 34
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1152 KB)  

    Recent, very general and fundamental results in the theory of electrically large microwave networks lead to new, advanced designs of high-efficiency beam-forming networks, for high-directivity electronically-steered phased arrays. On the basis of the rigorous new results, the beam-forming networks of electronically-steered phased arrays can be simultaneously impedance matched to any given set of r... View full abstract»

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  • Automatic extraction and visualization of NEC-2 output data using MatNEC

    Publication Year: 1996 , Page(s): 73 - 79
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1604 KB)  

    MatNEC is a series of tools that use the popular analysis program MatLab to serve as both a pre- and post-processor for a NEC-2 computational engine. The pre-processing features of MatNEC, which include interactive structure development and the generation of an ASCII-text input file, were described in detail previously. This article details the post-processing features of MatNEC, which include aut... View full abstract»

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  • Exact derivation of aperture errors in antenna measurements

    Publication Year: 1996 , Page(s): 56 - 60
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (632 KB)  

    Antenna-pattern measurements are generally undertaken by placing the antenna under test (usually the receiving antenna) sufficiently far from the transmitting antenna that the receiving antenna is illuminated with a plane wave. Gain measurements, whether by substitution, paired horns, or integration of the area under the beam pattern, depend upon the same criterion. A true plane wave is only achie... View full abstract»

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  • Prediction from wrong models: the Kriging approach

    Publication Year: 1996 , Page(s): 35 - 45
    Cited by:  Papers (10)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (956 KB)  

    This article reviews a very general, multi-factor, parametric approach to system modeling, called Kriging. It is shown how this method can lead to adequate prediction, together with an estimation of the accuracy of the predicted values of an observable, although the model is based on outrageously simplistic equations (and thus “wrong”, from a phenomenological point of view). Kriging ap... View full abstract»

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The IEEE Antennas and Propagation Magazine actively solicits feature articles that describe engineering activities taking place in industry, government, and universities

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Mahta Moghaddam