Communications: radio wave antennas – Antennas – Antenna components
Reexamination Certificate
2011-03-22
2011-03-22
Nguyen, Hoang V (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna components
C343S7000MS, C343S754000
Reexamination Certificate
active
07911407
ABSTRACT:
A method for designing artificial impedance surfaces is disclosed. The method involves matching impedance component values required for a given far-field radiation pattern (determined, for example, by holographic means) with measured or simulated impedance component values for the units of a lattice of conductive structures used to create an artificial impedance surface, where the units of the lattice have varied geometry. For example, a unit could be a square conductive structure with a slice (removed or missing material) through it. The measured or simulated impedance components are determined by measuring wavevector values for test surfaces in three or more directions over any number of test surfaces, where each unit of a given test surface has the same geometric shape and proportions as all of the other units of that test surface, but each test surface has some form of variation in the unit geometry from the other test surfaces. These test measurements create a table of geometry vs. impedance components that are used to design the artificial impedance structure. Since polarization can be controlled, the structure can be an artificial impedance surface characterized by a tensor impedance having complex components.
REFERENCES:
patent: 5486837 (1996-01-01), Miller
patent: 5917458 (1999-06-01), Ho et al.
patent: 6208316 (2001-03-01), Cahill
patent: 6262495 (2001-07-01), Yablonovitch et al.
patent: 6323826 (2001-11-01), Sievenpiper et al.
patent: 6483480 (2002-11-01), Sievenpiper et al.
patent: 6483481 (2002-11-01), Sievenpiper et al.
patent: 6496155 (2002-12-01), Sievenpiper et al.
patent: 6512494 (2003-01-01), Diaz et al.
patent: 6518931 (2003-02-01), Sievepiper et al.
patent: 6538621 (2003-03-01), Sievenpiper et al.
patent: 6552696 (2003-04-01), Sievenpiper
patent: 6690327 (2004-02-01), McKinzie et al.
patent: 6739028 (2004-05-01), Sievenpiper et al.
patent: 6774866 (2004-08-01), McKinzie et al.
patent: 6806846 (2004-10-01), West
patent: 6897831 (2005-05-01), McKinzie et al.
patent: 7136029 (2006-11-01), Ramprasard et al.
patent: 7197800 (2007-04-01), Sievenpiper et al.
patent: 7218281 (2007-05-01), Sievenpiper et al.
patent: 7245269 (2007-07-01), Sievenpiper et al.
patent: 7411565 (2008-08-01), McKinzie et al.
patent: 7420524 (2008-09-01), Werner et al.
patent: 7471247 (2008-12-01), Saily et al.
patent: 2003/0112186 (2003-06-01), Sanchez et al.
patent: 2005/0029632 (2005-02-01), McKinzie et al.
patent: 2006/0050010 (2006-03-01), Choi et al.
patent: 2006/0152430 (2006-07-01), Seddon et al.
patent: 1 508 940 (2005-02-01), None
patent: 2002299951 (2002-10-01), None
patent: 2004/093244 (2004-10-01), None
Checcacci, V., et al., “Holographic Antennas”,IEEE Transactions on Antennas and Propagation, vol. 18, No. 6, pp. 811-813, Nov. 1970.
Fathy, A.E., et al., “Silicon-Based Reconfigurable Antennas—Concepts, Analysis, Implementation and Feasibility”,IEEE Transactions on Microwave Theory and Techniques, vol. 51, No. 6, pp. 1650-1661, Jun. 2003.
King, R., et al., “The Synthesis of Surface Reactance Using an Artificial Dielectric”,IEEE Transactions on Antennas and Propagation, vol. 31, No. 3, pp. 471-476, May 1993.
Levis, K., et al., “Ka-Band Dipole Holographic Antennas”,IEEE Proceedings of Microwaves, Antennas and Propagation, vol. 148, No. 2, pp. 129-132, Apr. 2001.
Mitra, R., et al., Techniques for Analyzing Frequency Selective Surfaces—A Review,Proceedings of the IEEE, vol. 76, No. 12, pp. 1593-1615, Dec. 1988.
Oliner, A., et al., “Guided waves on sinusoidally-modulated reactance surfaces”,IEEE Transactions on Antennas and Propagation, vol. 7, No. 5, pp. 201-208, Dec. 1959.
Pease, R., “Radiation from Modulated Surface Wave Structures II”IRE International Convention Record, vol. 5, pp. 161-165, Mar. 1957.
Sazonov, D.M., “Computer Aided Design of Holographic Antennas and Propagation”,IEEE International Symposium of the Antennas and the Propagation Society 1999, vol. 2, pp. 738-741, Jul. 1999.
Sievenpiper, D., et al., “High-Impedance Electromagnetic Surfaces with a Forbidden Frequency Band”,IEEE Transactions on Microwave Theory and Techniques, vol. 47, No. 11, pp. 2059-2074, Nov. 1999.
Thomas, A., et al., “Radiation from Modulated Surface Wave Structures I”,IRE International Convention Record, vol. 5, pp. 153-160, Mar. 1957.
Colburn Joseph S.
Fong Bryan Ho Lim
Herz Paul R.
Ottusch John J.
Sievenpiper Daniel F.
HRL Laboratories LLC
Ladas & Parry
Nguyen Hoang V
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