MICROWAVE ACOUSTIC DELAY LINE AND RELATED ACTIVE DEVICES,

Abstract

Generation of useful rf power outputs in CdS crystals was demonstrated with outputs up to 156 mw at the terminals without the need for transducers. High efficiency (3 db conversion loss) diffusion layer integral transducers were achieved in ultra high purity CdS crystals. Feasibility of complete functional devices from a single crystal of material was shown with integral delay lines and amplifiers. The use of thermal heat sinks and proper choice of crystal geometry were shown to overcome most of the obstacles to achievement of continuous operation of electroacoustic devices. Initial results included satisfactory operation of a CdS oscillator at a duty factor greater than 0.1. Efforts were continued with significant results in the general areas of more efficient electric/acoustic transducers, suitable drift field electrodes and negative resistance elements and circuits. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1964
Accession Number
AD0604250

Entities

Organizations

  • Motorola Mobility

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Acoustic Delay Lines
  • Crystals
  • Delay Lines
  • Heat Sinks
  • Integrals
  • Materials
  • Radio Frequency Power
  • Single Crystals
  • Transducers

Readers

  • Electronics Engineering
  • Materials Science and Engineering.
  • Solar Photovoltaics and Thermoelectric Devices.