RECEIVING CHARACTERISTICS OF QUASI-SHIELDED ANTENNAS-VLF CASE

Technical Report · Wed Oct 15 04:00:00 EDT 1958

OSTI ID:4275834

Harrison, Jr, C W; Denton, Jr, D H

ABS>The behavior of electric and magnetic probes in a linearly polarized electric field is determined quantitatively. Formulas are developed permitting calculation of the power in the load impedances in terms of the incident electric field under the following conditions: when the electric and magnetic probes are isolated; when the electric and magnetic probes are in proximity to an infinite, perfectly conducting plane- when the magnetic probe is shadowed by an infinite, imperfectly conducting plane of finite thickness: when the magnetic probe is situated between two infinite, imperfectly conducting plates of finite thickness: and when the magnetic probe is situated between an infinite, imperfectly conducting plate of finite thickness and a parallel, infinite, perfectly conducting plane. A probe is defined as an antenna (dipole or loop) having small dimensions in terms of the wavelength. On the basis of this analysis it is possible to draw some useful conclusions regarding the efficacy of a slotted as well as a nonperforated, imperfectly conducting, cylindrical shield (of small length and radius compared to the wavelength) containing either an electric or magnetic probe. (auth)

• Research Organization: Sandia Corp., Albuquerque, N. Mex.
• DOE Contract Number: AT(29-1)-789
• NSA Number: NSA-13-007684
• OSTI ID: 4275834
• Report Number(s): SCTM-396-58(14)
• Country of Publication: United States
• Language: English

Related Subjects

ANTENNAS
CONFIGURATION
CYLINDERS
DIPOLES
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICITY
ELECTRONIC EQUIPMENT
EQUATIONS
FREQUENCY
INSTRUMENTS
MAGNETISM
NUMERICALS
OPERATION
PLATES
POLARIZATION
POWER
PROBES
QUANTITATIVE ANALYSIS
RADIO WAVES
RESISTORS
THICKNESS