Results 251 to 260 of about 10,033,418 (302)

Broadband Frequency Selective Surface

MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's, 1986
Future communication satellites will use dichroic subreflectors to produce multiple focal regions from a single parabolic reflector. This additional focal region will allow for beams operating over different frequency bands to be produced by a single reflector and avoid the feed crowding or mechanical limitations current reflector antennas encounter ...
D. A. Palma, W. C. Wong
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Nanophotonic Frequency Selective Surfaces

Frontiers in Optics, 2005
The near-infrared properties of metallic films perforated with periodic arrays of annular apertures are considered computationally and experimentally. The transmission spectrum is investigated theoretically in the context of the near-zone electric and magnetic fields.
S. Orbons, D.N. Jamieson, A. Roberts
openaire   +1 more source

Plasma Frequency Selective Surfaces

IEEE Transactions on Plasma Science, 2007
This paper is focused on using plasma as a substitute for metal in a frequency selective surface ("FSS"). FSSs have been used for filtering electromagnetic waves. Each FSS layer has to be modeled using numerical methods, and the layers are stacked in such a way to create the desired filtering.
Ted Anderson, Igor Alexeff, James Raynolds, Esmaeil Farshi, Sriram Parameswaran, Eric P. Pradeep, Jyothi Hulloli   +6 more
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Complementary frequency selective surfaces

IEE Proceedings - Microwaves, Antennas and Propagation, 2000
A concept in frequency selective surface (FSS) technology that stems from Babinet's principle, whereby a hybrid of two closely coupled FSS, a layer of conducting elements and a layer of aperture elements are etched either side of a dielectric substrate, acronymed as complementary FSS (CFSS) is introduced.
D.S. Lockyer, J.C. Vardaxoglou, R.A. Simpkin   +2 more
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Plasma frequency selective surfaces

The 30th International Conference on Plasma Science, 2003. ICOPS 2003. IEEE Conference Record - Abstracts., 2003
Summary form only given, as follows. Summary form only given. This research is focused on using plasma as a substitute for metal in a frequency selective surface (FSS). Frequency selective surfaces have been used for filtering electromagnetic waves. Our plasma frequency selective surfaces can be tuned to a desired filtering by varying the density or ...
T. Anderson, I. Alexeff, J. Raynolds
openaire   +1 more source

Plasma frequency selective surfaces

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
Plasma frequency selective surfaces (FSS) [1]-[2] use plasma instead of metal for the FSS elements. Frequency selective surfaces have been used for filtering electromagnetic waves and Munk [3] wrote a comprehensive book on the subject. In conventional metal FSS, each layer has to be modeled using numerical methods and the layers are stacked in such a ...
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On finite frequency selective surfaces

IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450), 2004
It is customary to approximate finite periodic structures by considering infinite surfaces. While this approach works under many circumstances, there are cases where strong surface waves are excited that cannot be accounted for by the infinite array approach An explanation of this phenomenon is shown.
B.A. Munk, D.S. Janning, J. Pryor
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Limiting frequency selective surfaces

2009 European Microwave Conference (EuMC), 2009
Abstract In this paper the concept of limiting Frequency Selective Surface (FSS) is presented. The design of a reconfigurable FSS equipped with PIN diodes, aimed at the protection of a radar receiver from high power impinging electromagnetic waves is outlined and verified against the measurement results of a hardware demonstrator.
Monni, S., Bekers, D.J., Wanum, M. van, Dijk, R. van, Neto, A., Gerini, G., Vliet, F.E. van   +6 more
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Terahertz Frequency Selective Surface

2014
In Chaps. 6 and 8, the application of the frequency selective surfaces (FSS) at the terahertz (THz) frequency has been discussed.
Kumud Ranjan Jha, Ghanshyam Singh
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Active frequency-selective surfaces

IEE Proceedings - Microwaves, Antennas and Propagation, 1996
Two different varieties of active frequency-selective surfaces (FSS) are described. In one type, active FSS elements incorporating switched PIN diodes are discussed. Waveguide simulation studies show that the frequency response of the surface can be electronically switched from that of a reflecting structure to a transmitting structure.
T.K. Chang, R.J. Langley, E.A. Parker
openaire   +1 more source