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Nonreciprocal Radiation Pattern Metasurface Transformer
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019This paper presents the concept of nonreciprocal radiation pattern metasurface transformer. The metasurface is placed on top of a source antenna, transforms the radiation pattern of the source antenna, introducing different radiation patterns for transmit and receive states.
Reza Karimian +3 more
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1981
the radiation patterns considered were at distances from the aperture sufficiently large that all ray paths from the aperture to the field point are essentially parallel, i.e. r>a,b in Fig. 3.1 Here this assumption is removed and the radiation field in what is known in optics as the Fresnel zone of the aperture is examined.
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the radiation patterns considered were at distances from the aperture sufficiently large that all ray paths from the aperture to the field point are essentially parallel, i.e. r>a,b in Fig. 3.1 Here this assumption is removed and the radiation field in what is known in optics as the Fresnel zone of the aperture is examined.
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Waveforms and Radiation Patterns
1984In numerous technical applications, as well as some theoretical considerations, an enticing problem is encountered. In its most practical (and real) form the problem may be that of designing a radar (or sonar) transmitter waveform with a given spectrum such that its peak factor is a minimum.
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Scanning synthetic radiation pattern antennas
Radioelectronics and Communications Systems, 2010It is proposed conception of development of new type transmitting-receiving scanning antennas, which are called antennas with synthetic radiation pattern. It is based on application of movement of radiating (receiving) element together with synthesizing of radiation pattern (RP) by means of SAR for processing of recorded information about radiated and ...
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Simulation of antenna radiation pattern
Microwave and Optical Technology Letters, 1995AbstractAdequately modeling the radiation pattern of a highâperformance antenna system usually requires the expensive development of complicated electromagnetic software or the storage of an extremely large number of measured data. An alternative and efficient simulation technique is described in this article using a spherical wave expansion model ...
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Riemann zeros in radiation patterns
Journal of Physics A: Mathematical and Theoretical, 2012Propagation into the far field changes initial waves into their Fourier transforms. This implies that the Riemann zeros could be observed experimentally in the radiation pattern generated by an initial wave whose Fourier transform is proportional to the Riemann zeta function on the critical line. Two such waves are examined, generating the Riemann ?(t)
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
Multidisciplinary standards of care and recent progress in pancreatic ductal adenocarcinoma
Ca-A Cancer Journal for Clinicians, 2020Aaron J Grossberg +2 more
exaly