Accession Number : ADA332693

Title :   Second Generation Quasi-Optical Combiners

Descriptive Note : Final rept 15 Apr 94-15 Apr 97

Corporate Author : CORNELL UNIV ITHACA NY SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Compton, Richard C. ; Wright, Warren

PDF Url : ADA332693

Report Date : 05 SEP 1997

Pagination or Media Count : 26

Abstract : Millimeter-wave quasi-optical power combining schemes employing new and innovative architectures have been investigated with the objectives of building efficient arrays and addressing the specific shortcomings encountered during development. The importance of broadband wireless applications has been recognized through the implementation of array modulation schemes, taking into consideration noise, linearity and other relevant issues. Novel quadrature phase locked loop techniques for generating QPSK, 16-QAM and high order QAM modulation schemes have been developed. Omni-directional arrays using modified Vivaldi antennas, a monopole based Ku-band amplifier array with a gain of 5.4 dB, a Fabry-Perot resonator coupled oscillator array, an inclined plane horn antenna array and three-dimensional grating array structures were investigated.

Descriptors :   *OPTICAL PROCESSING, ARRAYS, WAVEGUIDES, CAVITIES, THREE DIMENSIONAL, PLANAR STRUCTURES, FABRY PEROT INTERFEROMETERS, ANTENNAS, CIRCUITS, OPTICAL STORAGE, APERTURES, SOLID STATE ELECTRONICS, OMNIDIRECTIONAL.

Subject Categories : Electrical and Electronic Equipment
      Electrooptical and Optoelectronic Devices
      Electricity and Magnetism
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE