Centers of structures in electromagnetism--a critical analysis
TL;DR: In this paper, some principles for finding reference points or centers of structures in electromagnetism are outlined, which are based on Friis's transmission formula and the radar equation, these are given in forms suitable for finding centers.
read more
Abstract: Some principles for finding reference points or centers of structures in electromagnetism are outlined. It is pointed out that the centers which are found depend on arbitrary choices. Since some of the principles are based on Friis's transmission formula and the radar equation, these are given in forms suitable for finding centers. The use of correction factors and near-field parameters are outlined. In particular, proper use of different near-field radar cross sections for plates and spheres are outlined.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Prospects for three‐dimensional projective and tomographic imaging radar networks
TL;DR: In this paper, the authors demonstrate the feasibility of broadband and speckle-free projective imaging of a complex shaped scattering object in the 6-17 GHz range with centimeter resolution.
82
Design considerations for low antenna correlation and mutual coupling reduction in multi antenna terminals
TL;DR: The influence of mutual coupling on the envelope correlation between two identical planar inverted F-antennas (PIFA) are investigated and the set-ups that maximise the distances between the open ends of the PIFAs yield the lowest mutual coupling as well as the lowest envelope correlations.
35
On the amplitude center of radiating apertures
A. Panicali,M. Nakamura +1 more
TL;DR: In this paper, an explicit formula for locating the amplitude center of planar apertures radiating scalar fields is derived for scalar conical and pyramidal horns, and numerical examples are given which show the validity of the formula.
27
International intercomparison of horn gain at X-band
C. F. Stubenrauch,Allen C. Newell,A. G. Repjar,K MacReynolds,D.T. Tamura,F.H. Larsen,J. Lemanczyk,R. Behe,G. Portier,J.C. Zehren,H. Hollmann,J.D. Hunter,D G Gentle,J P M de Vreede +13 more
TL;DR: An international intercomparison of horn gain and polarization measurements at X-band has previously been completed as mentioned in this paper, with seven participating laboratories with the National Institute of Standards and Technology serving as the pilot laboratory.
25
Mutual coupling between two identical planar inverted-F antennas
Jesper Thaysen
- 07 Aug 2002
TL;DR: In this article, the authors present the results of numerical investigations of the coupling between two equal planar inverted-F antennas, and the results illustrate that the orientation and the location could be optimised to obtain minimum coupling.
References
Physical Limitations of Omni-Directional Antennas
TL;DR: In this paper, the physical limitations of omni-directional antennas are considered and the potentiality of a broad band width of an antenna with the maximum dimension of 2a has been shown.
•Book
Methods of radar cross-section Analysis
John W. Crispin,Keeve Milton Siegel,J. J. Bowman +2 more
- 01 Jan 1968
250
Accurate measurement of antenna gain and polarization at reduced distances by an extrapolation technique
A. Newell,R. Baird,P. Wacker +2 more
TL;DR: In this paper, a generalized three-antenna approach is proposed for determining power gain and polarization of antennas at reduced range distances, and the required data are obtained by an extrapolation technique which includes provisions for rigorously evaluating and correcting for errors due to proximity and multipath interference effects.
160
Near-field far-field transformations using spherical-wave expansions
TL;DR: In this article, the authors used spherical-wave expansions as a numerical technique for expressing arbitrary fields specified by analytical, experimental, or numerical data, and found that the generally accepted wave order cutoff value corresponds to 99.9 percent or more of the power in the input pattern.
136
Related Papers (5)
Eberhardt Heidrich,W. Wiesbeck +1 more
- 18 Jun 1992
T. Savides,B. Dwolatzky +1 more
- 04 May 2003
J.R. Huynen
- 01 Aug 1965