Roke Manor Research Limited

Michael Jessup

Janice Emily Turner

A surface wave launcher for launching electromagnetic surface waves, the launcher comprising: a waveguide comprising a planar conductive layer; a feed structure comprising a first conductor, the first conductor coupled to the waveguide at a coupling; wherein the waveguide is arranged to be positioned adjacent to a surface suitable for guiding electromagnetic surface waves; and wherein the planar conductive layer comprises one or more slots each having a pair of longitudinal edge, the one or more slots extending through the conductive layer and arranged such that an axis radially extending from the coupling intersects each pair of longitudinal edges of the one or more slots.

Surface wave launcher comprising a waveguide with a planar conducting layer having one or more slots disposed therein

An apparatus for radio communication using surface waves, the apparatus comprising: a guiding medium having a first surface suitable for the propagation of surface waves, the first surface having a reactive impedance; at least one communication node, the node having a transmitter and/or receiver coupled to a transducer, the transducer positioned on or adjacent the first surface of said guiding medium; wherein the at least one communication node is arranged to launch and/or receive surface waves, over the first surface of said guiding medium.

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Hampshire, United Kingdom

Michael Jessup