SINUSOIDALLY MODULATED WAVE GUIDES FOR TRAVELING-WAVE ANTENNAS
Abstract
THE SINUSOIDALLY VARIED WAVEGUIDES PRODUCE THE WAVES WHOSE AMPLITUDE AND PHASE ARE MODULATED ALONG THE SURFACE. ONE WALL OF THE GUIDE IS REPLACED BY SINUSOIDALLY VARIED IMPEDANCE9 THE SPACING BETWEEN WALLS IS ALSO VARIED SINUSOIDALLY. THE FLOQUET'S THEOREM YIELDS THE RELATIONS BETWEEN EACH HARMONIC AND THE PROPAGATION CONSTANT. THE PERIODIC STRUCTURE IS ALSO STUDIED IN TERMS OF THE GENERALIZED KL - BETA L DIAGRAMWHICH INCLUDES THE LEAKY AS WELL AS THE SLOW WAVES. THE SUCCESSIVE APPROXIMATION METHOD IS APPLIED TO YIELD RELATIVELY SIMPLE EXPRESSIONSFOR THE APERTURE FIELD AND IT IS SHOWN THAT BY SUITABLE CHOICE OF VARIOUS PARAMETERS, THE DESIRED AMPLITUDE AND PHASE OF THE APERTURE FIELD CAN BE OBTAINED
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1960
- Accession Number
- AD0248999
Entities
People
- Akira Ishimaru
Organizations
- University of Washington