Microwave Acoustic and Bulk Device Technique Studies.

Abstract

AMPLIFIERS, GALLIUM ARSENIDES, INTEGRAL TRANSFORMSLITHIUM NIOBATES, *ACOUSTICS, *MICROWAVES, ACOUSTIC DELAY LINES, ACOUSTIC WAVES, SURFACE WAVES, ACOUSTIC EQUIPMENT, AMPLIFIERS, SIGNAL PROCESSING, SURFACE WAVES, FAST FOURIER TRANSFORMThe objectives of the contract are to advance new theory and device techniques for the generation and processing of microwave signals using elastic, electro-magnetic, and carrier space charge waves in solid media. The work is divided into three projects, as follows: bulk and surface acoustic wave amplifiers, axoustic parametric interactions, wide bandwidth dispersive delay lines. Significant results include broadband efficient excitation in an amplifier with net gain; a new convolution device with 30 db greater interaction strength than with lithium niobate; and a bulk wave device for convolution/correlation, time reversal, and Fast Fourier transform of arbitrary signsls. Work on wide bandwidth dispersive delay lines has led to the achievement of lines with near octave bandwidth, centered at 200 MHz, and linear dispersion characteristics. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0757555

Entities

People

  • Herbert John Shaw
  • Marvin Chodorow

Organizations

  • Stanford University

Tags

DTIC Thesaurus Topics

  • Acoustic Delay Lines
  • Acoustic Equipment
  • Acoustic Waves
  • Acoustics
  • Amplifiers
  • Bandwidth
  • Delay Lines
  • Fast Fourier Transforms
  • Gallium Arsenides
  • Lithium Niobates
  • Piezoceramics
  • Signal Processing
  • Space Charge
  • Surface Acoustic Waves
  • Surface Waves
  • Waves

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Microwave Engineering.

Technology Areas

  • Microelectronics
  • Space