Waveguide for the transmission of electromagnetic energy
First Claim
1. A waveguide for the transmission of electromagnetic energy, comprising:
- a cylindrical metallic sheath functioning to guide forward electromagnetic waves;
a wire-shaped body disposed coaxially in the interior of said sheath, said sheath and said wire-shaped body defining an intermediate space therebetween;
a medium having a low dielectric constant (ε
2) located in the space between said sheath and the wire-like body;
said wire-shaped body consisting solely of a dielectric material exhibiting a high dielectric constant (ε
1) such that an Eom wave (circular H field) can be excited only in the dielectric wire-shaped body, the dimensioning of the dielectric wire-shaped body being such, depending on the dielectric constants ε
2 and ε
1, and the particular operating frequency, so that a substantially pure TEM wave can develop at least substantially in the intermediate space.
0 Assignments
0 Petitions
Accused Products
Abstract
A waveguide for the transmission of electromagnetic energy which has a low attenuation even with a small line cross-section realized by disposing in the interior of an electromagnetically shielded hollow cylinder, consisting of a substance having a low permittivity, a dielectric wire of a substance having a high permittivity. An Eom -wave (m = 1, 2, 3 . . . , circular H field) is excited in the dielectric wire and the dimensioning of the dielectric wire is such, depending on the permittivities of the two substances and the particular operating frequency, that a TEM wave develops at least substantially in the space in the dielectric hollow cylinder. In the simplest case, the electromagnetic shield can consist of a metal tube and the dielectric hollow cylinder can consist primarily of air. Furthermore, the Eom wave excited in the dielectric wire is preferably the E01 wave (TM01 mode).
-
Citations
13 Claims
-
1. A waveguide for the transmission of electromagnetic energy, comprising:
-
a cylindrical metallic sheath functioning to guide forward electromagnetic waves; a wire-shaped body disposed coaxially in the interior of said sheath, said sheath and said wire-shaped body defining an intermediate space therebetween; a medium having a low dielectric constant (ε
2) located in the space between said sheath and the wire-like body;said wire-shaped body consisting solely of a dielectric material exhibiting a high dielectric constant (ε
1) such that an Eom wave (circular H field) can be excited only in the dielectric wire-shaped body, the dimensioning of the dielectric wire-shaped body being such, depending on the dielectric constants ε
2 and ε
1, and the particular operating frequency, so that a substantially pure TEM wave can develop at least substantially in the intermediate space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification