DocumentCode
386804
Title
Energy considerations in open and closed waveguides
Author
Laxpati, S. ; Mittra, Raj
Author_Institution
University of Illinois, Urbana, IL, USA
Volume
13
fYear
1966
fDate
21-25 March 1966
Firstpage
140
Lastpage
149
Abstract
Energy relations derived for a lossless, closed uniform and periodic structure show that the total complex Poynting vector integrated over the cross section is identically zero for the case of an arbitrary complex wave. These results are also applicable to open structures provided certain conditions are satisfied. The application of these results in the field of leaky wave antennas is discussed. Two illustrative examples, those of the sinusoidally modulated reactance surface and the sheath helix, are worked out. It is shown that although the slope of the
curve can no longer be associated with the direction of net power flows the knowledge of the slope may still be helpful in selecting certain modes for representing a given source.
curve can no longer be associated with the direction of net power flows the knowledge of the slope may still be helpful in selecting certain modes for representing a given source.Keywords
Attenuation; Circuits; Equations; Helical antennas; Laboratories; Load flow; Periodic structures; Propagation constant; Reflection; Tensile stress;
fLanguage
English
Publisher
ieee
Conference_Titel
1958 IRE International Convention Record
Conference_Location
New York, NY, USA
Type
conf
DOI
10.1109/IRECON.1965.1147511
Filename
1147511
Link To Document