Waveguides
AssigneeNational Research Development Corporation
InventorHarold Everard Monteagle Barlow
Life of this patent
Estimating the term…
Abstract
Waveguides for the dipole mode are described which are of rectangular cross-section with conductive walls and contain one or more longitudinal conductors, or groups of conductors. Where a plurality of conductors are employed they are usually arranged in planes parallel to one wall and are positioned nearer to this wall than the opposite wall. With one conductor or a group of conductors near one wall the dipole mode propagates principally between the conductor or conductors and the nearer wall while the evanescent part of the transverse field is allowed to decay substantially without interference before reaching the far wall.
Claims26
Apparatus for supporting electromagnetic waves including a hollow dielectric filled member having generally planar inner conducting walls defining an elongated space of substantially constant cross-section, and at least one elongated conductor passing along the length of the space between and parallel to first and second facing walls, the conductor being positioned relatively near the first wall and relatively far from the second wall, and the apparatus being such that electromagnetic waves are able to propagate principally in the region between the conductor and the first wall.
Apparatus for supporting electromagnetic waves, including a hollow dielectric filled-member having two pairs of opposite conductive walls defining an elongate space which is rectangular in cross-section, first and second groups of spaced apart conductors in which the conductors of the groups are parallel to one pair of opposite walls, and define a sub-region of the space bounded by the conductors of the first group, the conductors of the second group and the two other opposite walls, the apparatus being such that electromagnetic waves in the dipole mode are able to propagate principally in the sub-region.
Apparatus according to clam 24 wherein the first and second groups of conductors are positioned in planes parallel to the said one pair of opposite walls, and each wall of said one pair is positioned far enough from the nearer said parallel plane not to cause substantial interference with the evanescent field which appears between that wall and the said nearer parallel plane.
Apparatus for supporting electromagnetic waves, including a hollow dielectric filled member with an inner conducting surface defining an elongated space of substantially constant cross-section, and at least one elongated conductor passing along the length of the space parallel to the conducting surface between first and second facing portions of the surface, the conductor being positioned relatively near the first portion and relatively far from the second portion, and the apparatus being such that electromagnetic waves are able to propagate along the space, mainly in the region between the conductor and first portion.
Dependencies are inferred from the claim text.