Results 221 to 230 of about 61,809 (262)
Some of the next articles are maybe not open access.

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
openaire   +1 more source

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.   +6 more
openaire   +3 more sources

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

Infrared frequency selective surfaces

IEEE Antennas and Propagation Society Symposium, 2004., 2004
A frequency selective surface (FSS) is designed and fabricated to resonate in the infrared. The FSS is designed via periodic method of moments (PMM) software and is based on circuit-analog resonance of square loop elements. The lithographically composed FSS resonates at the absorption of infrared radiation.
Monacelli, Brian   +4 more
openaire   +2 more sources

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 ...
openaire   +1 more source

Thick frequency selective surfaces

IEEE Antennas and Propagation Society International Symposium 1992 Digest, 1992
As an additional means of controlling bandwidth, the use of periodic screens in free space with thick metallization was investigated for single-square loop and double-concentric-square loop elements. These loops elements were chosen because the passbands of such screens, with tight lattice spacing, display a remarkable insensitivity to incident ...
D.B. Webb, E. Michielssen, R. Mittra
openaire   +1 more source

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

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
openaire   +1 more source

Active frequency selective surfaces

SPIE Proceedings, 2013
Split ring resonator arrays are investigated for use as active elements for the realization of voltage controllable frequency selective surfaces. Finite difference time domain simulations suggest the absorptive and reflective properties of such surfaces can be externally controlled through modifications of the split ring resonator gap impedance.
Walter R. Buchwald   +3 more
openaire   +1 more source

Novel terahertz dual-polarized frequency selective surface with high frequency selectivity

2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
This work presents a novel terahertz frequency selective surface design, which is constructed by split loop resonators coupled by apertures. This three-layer structure has a narrow bandpass response with two transmission zeros beside the passband, thereby achieving high frequency selectivity and suppressing the sidebands. Due to the symmetric structure,
De, Song Wang, Chi, Hou Chan
openaire   +1 more source

Home - About - Disclaimer - Privacy