<div class="description">
<dl><dd>Title from cover</dd>
<dd>"August 1971"--Cover</dd>
<dd>"NPS-52KO71081A"--Cover</dd>
<dd>Author(s) key words: Coupled mode theory, periodic coupling, log periodic coupling</dd>
<dd>Includes bibliographical references (p. 17)</dd>
<dd>Technical report; 1971</dd>
<dd>The report summarizes an investigation of the applicability of the log periodic concept to coupled microwave transmission lines. It is shown that active coupling at a given frequency may be achieved between two lines supporting waves with different phase constants provided they are coupled periodically with a periodicity determined by the difference B(2)-B(1) at that frequency. Since B(2)-B(1) will, in general, vary with frequency, coupling over a broad frequency range requires a variable period. This may be realized by scaling the structure period, thereby giving rise to a log periodic mode coupler. This technique appears to hold promise for achieving the same wideband performance that has been attained with log periodic radiators. (Author)</dd></dl><br>Subjects: RECRUITING.; SALARIES.</div>
<div class="fn value">
Knorr, Jeffrey B.</div>
Internet Archive identifier