Dominant mode power leakage from printed-circuit waveguides
Article first published online: 7 DEC 2012
Copyright 1991 by the American Geophysical Union.
Volume 26, Issue 2, pages 559–564, March-April 1991
How to Cite
1991), Dominant mode power leakage from printed-circuit waveguides, Radio Sci., 26(2), 559–564, doi:10.1029/90RS01148., , and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 17 MAY 1990
- Manuscript Received: 29 DEC 1989
This study is concerned with a new type of dominant mode power leakage from uniform lengths of printed-circuit waveguides, such as microstrip line, slot line, and coplanar waveguide. These leakage effects, which are presently not recognized and can therefore be unexpected as well as undesired, occur at higher frequencies, and are therefore important for millimeter-wave integrated circuits and high-speed circuits. The cross talk and coupling that result can ruin the performance of a complex, high-density circuit unless the leakage effects are understood and controlled. The leakage effects reported here occur on uniform lengths of printed-circuit waveguide on which the dominant mode is purely bound at ordinary microwave frequencies but becomes leaky at higher frequencies; they appear in addition to the leakage produced by conversion into surface waves at various discontinuities. The nature of the leakage is described, and numerical results are presented for several structures as illustrations of the variety of ways this type of leakage can arise.