Embedded Millimeter Wave Photonic Crystals as Processing Elements in Shipboard Superstructures
Final technical rept. 15 Jan 2006-14 Jan 2007
DELAWARE UNIV NEWARK
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The ability to rapidly and accurately detect signals is essential in the modern warfare environment. However, the ever increasing use of the spectrum places great demand on current technology and, requires significant technological developments to overcome current limitations. Also, the nearly ubiquitous miniaturization of military systems requires a concomitant reduction in the size of radiating apertures. Therefore, in order to deal with these challenges, advanced artificial materials are used, namely, photonic crystals PhCs and meta-materials, to construct an advanced signal sensing head with miniaturized antennas. This sensor can directly detect and process signals in terms of their frequency channelization and direction of arrival and does so at essentially the speed of light In addition, PhC based devices are electromagnetically transparent, which leads to a dramatic reduction of the scattering cross-section. Perhaps the most significant advantage of the PhC approach is that its underlying devices are on the wavelength scale, which results in ultra-compact systems. This report summarizes our work in this regard and presents an experimentally demonstrated hybrid lattice PhC channelizer and its associated Schottky diodes. Based on these devices, millimeter wave correlator was designed, which is composed of the channelizer, Schottky diode mixers and spiral antennas. Also presented are the design and simulation results of ultra- compact meta-material based split-ring resonators SRRs for the realization of physically small, yet electrically large antennas.
- Active and Passive Radar Detection and Equipment