RF dielectric properties and measurement system: human and animal data.

Details

• Personal Author:
  Toler J
• Description:
  A system was developed for accurately and repeatedly measuring the relative dielectric constant and conductivity of phantom modeling research materials. The frequency range of interest was 10 to 100MHz. The system is based on an antenna modeling theorem relating the impedance of a short monopole antenna in air to its impedence in dielectric media with high radiofrequency power absorption such as phantom modeling materials and biological tissues. System implementation resulted in an equipment configuration consisting of a signal source, network analyzer, and small in-vivo probe. By comparing measured electrical property data with corresponding reference data published in the open literature system, accuracy and repeatability were demonstrated. Water, methanol (67561), ethylene- glycol (107211), saline solutions, and phantom modeling materials were used in this data comparison. Accuracies within plus or minus 5% were demonstrated for both discrete and swept frequency measurements. [Description provided by NIOSH]
• Subjects:
  Biological Products Electricity Electromagnetic Phenomena Occupational Health Radiation Safety
• Keywords:
  NIOSH-Contract; Contract-210-76-0136; Physical-properties; Electromagnetic-properties; Biological-effects; Electrical-measurement-devices; Electric-fields; Nonionizing-radiation; Analytical-models; Biological-tissue
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Guidance
• Place as Subject:
  Georgia ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DBBS - Division of Biomedical and Behavioral Sciences
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-86
• NIOSHTIC Number:
  nn:00080701
• Citation:
  NIOSH 1977 Jul; :1-86
• CAS Registry Number:
  Ethylene glycol (CAS RN 107-21-1) ; Methanol (CAS RN 67-56-1)
• Federal Fiscal Year:
  1977
• Peer Reviewed:
  False
• Source Full Name:
  Division of Biomedical and Behavioral Sciences, NIOSH
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/240798/cdc_240798_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]