Dr. James C. Wiltse
Deceased
SPIE Involvement:
Track Chair | Author | Instructor
Publications (24)

Proceedings Article | 4 December 2017 Paper
Proc. SPIE. 1576, 16th International Conference on Infrared and Millimeter Waves
KEYWORDS: Waveguides, Signal attenuation, Metals, Dielectrics, Antennas, Analytical research

Proceedings Article | 1 May 2009 Paper
Proc. SPIE. 7311, Terahertz Physics, Devices, and Systems III: Advanced Applications in Industry and Defense
KEYWORDS: Genetic algorithms, Extremely high frequency, Signal attenuation, Dielectrics, Terahertz radiation, Antennas, Analytical research, Zone plates, Microwave radiation, Phase shifts

Proceedings Article | 4 May 2007 Paper
Proc. SPIE. 6549, Terahertz for Military and Security Applications V
KEYWORDS: Diffraction, Extremely high frequency, Signal attenuation, Dielectrics, Interfaces, Fourier transforms, Terahertz radiation, Antennas, Zone plates, Spherical lenses

Proceedings Article | 4 May 2007 Paper
Proc. SPIE. 6549, Terahertz for Military and Security Applications V
KEYWORDS: Waveguides, Signal attenuation, Dispersion, Copper, Dielectrics, Coating, Magnetism, Wave propagation, Terahertz radiation, Aluminum

Proceedings Article | 4 May 2007 Paper
Proc. SPIE. 6551, Atmospheric Propagation IV
KEYWORDS: Extremely high frequency, Fiber optic gyroscopes, Signal attenuation, Satellites, Atmospheric corrections, Wave propagation, Terahertz radiation, Atmospheric propagation, Atmospheric modeling, Absorption

Showing 5 of 24 publications
Proceedings Volume Editor (4)

SPIE Conference Volume | 24 September 1987

SPIE Conference Volume | 24 October 1985

SPIE Conference Volume | 14 October 1983

Conference Committee Involvement (10)
Targets and Backgrounds XII: Characterization and Representation
17 April 2006 | Orlando (Kissimmee), Florida, United States
Targets and Backgrounds XI: Characterization and Representation
28 March 2005 | Orlando, Florida, United States
Targets and Backgrounds X: Characterization and Representation
12 April 2004 | Orlando, Florida, United States
Targets and Backgrounds IX: Characterization and Representation
21 April 2003 | Orlando, Florida, United States
Optical Analogies in Microwave/Millimeter Wave Design
23 July 1998 | San Diego, CA, United States
Showing 5 of 10 Conference Committees
Course Instructor
SC782: Zone Plate Antennas for Millimeter-Wave and Terahertz Frequencies
The field of Fresnel zone plate antennas has seen extensive research and development in the last several years. Scores of articles and three books have been published recently. Zone plate antennas are being used in applications such as communications, radar, radiometry, and guidance, where they offer lower weight and volume, as well as simplicity of design. This course provides attendees with the basic principles of phase-correcting Fresnel zone plate antennas at millimeter-wave and terahertz frequencies. The course concentrates on describing characteristics such as antenna gain, bandwidth, frequency dependence, far-field patterns, efficiency, aberrations, off-axis performance, focal behavior, and feed considerations for zone plate designs having focal lengths and diameters that are similar in size. Their performance is comparable or sometimes superior to a standard lens. Many practical and useful examples are included. Attendees will become fluent with how one designs zone plate antennas for varying applications. The effects of going to the higher frequencies will be described.
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