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Circularly polarized 2450‐MHz waveguide system for chronic exposure of small animals to microwaves
Author(s) -
Guy Arthur W.,
Wallace Jack,
McDougall John A.
Publication year - 1979
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs014i06sp00063
Subject(s) - microwave , isolator , waveguide , splitter , physics , optics , standing wave ratio , acoustics , transducer , optoelectronics , materials science , telecommunications , electrical engineering , computer science , antenna (radio) , engineering , microstrip antenna , quantum mechanics
A system developed to expose chronically a large number of small animals to 918‐MHz microwave has been modified to permit exposure at 2450 MHz. Special transmitting and termination transducers were used to retrofit the exposure chambers of the 918‐MHz system. The use of separate cells that consist of cylindrical waveguides, which are excited by circularly polarized, guided waves, provides a relatively constant and easily quantifiable coupling of microwave energy to each animal, regardless of their position, posture, or movement. The VSWR in each cell is sufficiently low that any number of cells can be coupled to a single source through a power splitter without the need for an isolator.