Leaky coaxial cable wherein aperture spacings decrease along the length of the cable
First Claim
1. A high frequency coaxial cable comprising an inner conductor and, insulated from and surrounding the inner conductor throughout the length of the cable, an outer conductor of metal or metal alloy having extending longitudinally throughout at least a finite part of its length at least one row of apertures that are mutually spaced along the outer conductor, each aperture being of such a size and the mutual spacing between adjacent apertures being such that high frequency signals can be received by or transmitted from the cable, wherein the mutual spacing between adjacent apertures of said row decreases along the length of the row, being a maximum value at the end of the row and a minimum value at the other end of the row.
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Accused Products
Abstract
The outer conductor of a high frequency electric cable of the kind employed as a stationary elongate element for transmitting high frequency signals to, or receiving high frequency signals from a receiving or transmitting device carried by a mobile body, has extending along its length at least one row of mutually spaced apertures, the mutual spacing between adjacent apertures of the or each row decreasing along the length of the row, being a maximum value at one end of the row and a minimum value at the other end of the row. The or each row of apertures may be sub-divided into a plurality of sub-groups of apertures, the mutual spacing between adjacent apertures of each sub-group being constant, and the mutual spacing between adjacent sub-groups decreasing along the length of the cable.
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Citations
8 Claims
- 1. A high frequency coaxial cable comprising an inner conductor and, insulated from and surrounding the inner conductor throughout the length of the cable, an outer conductor of metal or metal alloy having extending longitudinally throughout at least a finite part of its length at least one row of apertures that are mutually spaced along the outer conductor, each aperture being of such a size and the mutual spacing between adjacent apertures being such that high frequency signals can be received by or transmitted from the cable, wherein the mutual spacing between adjacent apertures of said row decreases along the length of the row, being a maximum value at the end of the row and a minimum value at the other end of the row.
Specification