Accession Number : AD0635534

Title :   ON THE STORED ENERGY OF PLANAR APERTURES.

Corporate Author : RADIATION INC MELBOURNE FLA

Personal Author(s) : Rhodes, Donald E.

Report Date : 20 MAY 1966

Pagination or Media Count : 28

Abstract : The volume integrals in the complex Poynting theorem are usually assumed to represent stored magnetic and electric energy. But for a planar aperture radiating into a lossless homogeneous medium it is shown that the only physically observable part of the volume integrals is twice that produced in the invisible region of the pattern space factor by those field components that vanish in the plane outside of the aperture. The new formulas for stored magnetic and electric energy of planar apertures are used to make the first known test of the widely held assumption that the reciprocal relationship between Q and band-width of non-radiating systems applies also to radiating systems. By direct computation of Q and of bandwidth independently it is shown that the reciprocal relationship does hold for the test case treated (the planar dipole). (Author)

Descriptors :   (*ANTENNA APERTURES, *ELECTROMAGNETISM), ANTENNA RADIATION PATTERNS, NUMERICAL ANALYSIS, ALGORITHMS

Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE