An RF joint rotating about an axis of rotation (Z) includes a number N, greater than or equal to 1, of RF transmission channels, a first, internal surface of symmetry of revolution about the axis (Z) and of RF transmission having a first, internal radius r1, and a second, external surface of symmetry of revolution about the axis (Z) and of RF transmission having a second, external radius r2, strictly less than the first, internal radius r1. The first and second RF transmission surfaces facing one another and rotationally mobile about the axis (Z) are configured through the first and second radii r1, r2, the geometry of the first and second RF access ports, and the geometry of the first and second RF containment and guidance means, such that: each RF transmission channel Vi, i varying from 1 to N, comprises a first RF rotating waveguide, and the N first RF rotating waveguides are distributed angularly over a predetermined number NC, greater than or equal to 1 and less than or equal to N, of sections of surfaces of revolution about the axis (Z) of the second RF transmission surface, each of the NC sections being situated along the longitudinal axis of symmetry (Z) at a predetermined different level L1(k).

A waveguide device includes a first electrical conductor including a first electrically conductive surface and a second electrical conductor including a second electrically conductive surface opposing the first electrically conductive surface. The second electrical conductor includes a through hole, a ridge-shaped waveguide protruding from the second electrically conductive surface, and electrically conductive rods protruding from the second electrically conductive surface. The waveguide includes an electrically-conductive waveguide surface opposing the first electrically conductive surface, and one end thereof extends into the through hole. The electrically conductive rods are located on opposite sides of the waveguide, each including a leading end opposing the first electrically conductive surface. The first electrical conductor or the second electrical conductor includes an electrically conductive wall protruding from the first electrically conductive surface or the second electrically conductive surface. The electrically conductive wall extends around the one end of the waveguide.

Aspects of the subject disclosure may include, a first waveguide system that includes a transmitter that facilitates generation of an electromagnetic wave, and a directional coupler that facilitates inducing propagation of the electromagnetic wave along a transmission medium. The electromagnetic wave can be directed to a second waveguide system coupled to the transmission medium, and propagates along the transmission medium without requiring an electrical return path. Other embodiments are disclosed.

A waveguide circuit (1) includes a first waveguide tube (10), a second waveguide tube (20), and a third waveguide tube (30). The first waveguide tube (10), the second waveguide tube (20), and the third waveguide tube (30) have cross-sectional shapes to allow propagation of TE modes. The tube axis of the second waveguide tube (20) is parallel to the tube axis of the first waveguide tube (10). One of the narrow sidewalls of the second waveguide tube (20) faces a narrow sidewall (10s) of the first waveguide tube (10). The third waveguide tube (30) includes a coupler that connects a hollow guide of the third waveguide tube (30) to a hollow guide of the first waveguide tube (10) and a hollow guide of the second waveguide tube (20).

A dual polarized waveguide device includes a first waveguide that defines a first linear signal propagation path, a second waveguide that defines a second linear signal propagation path that is parallel to the first linear signal propagation path, and a polarization selective coupling interface coupling the first and second waveguides, the polarization selective coupling interface being configured to enable horizontally polarized signals to pass between the first and second linear propagation paths and prevent vertically polarized signals from passing between the first and second linear propagation paths.

A directional coupler 1 includes: a first waveguide 31 and a second waveguide 32 that are arranged in parallel with post arrays 23 and 24 therebetween; a coupling window 33 that is formed in the post arrays 23 and 24 and electromagnetically couples the first waveguide 31 and the second waveguide 32; and a projecting conductor 50 that projects, at a center in a width direction of the coupling window 33, from one conductive layer 13 of paired conductive layers 12 and 13 facing each other in the first waveguide 31 and the second waveguide 32, toward an inside of the coupling window 33, the projecting conductor 50 being spaced from the other conductive layer 12.

A clock apparatus with: (i) a gas cell, including a continuous path cavity including a sealed interior for providing a signal waveguide; (ii) an apparatus for providing an electromagnetic wave to travel along the continuous path cavity and for circulating around the continuous path cavity back toward and past a point of entry of the electromagnetic wave in the continuous path cavity; (iii) a dipolar gas inside the sealed interior of the cavity; and (iv) receiving apparatus for detecting an amount of energy in the electromagnetic wave, wherein the amount of energy is responsive to an amount of absorption of the electromagnetic wave as the electromagnetic wave passes through the dipolar gas.

A directional coupler includes: a first waffle-iron ridge waveguide extending from one end to other end; a second waffle-iron ridge waveguide extending from one end to the other end; a first bypass waveguide connecting a first site of the first waffle-iron ridge waveguide and a first site of the second waffle-iron ridge waveguide; and a second bypass waveguide connecting a second site of the first waffle-iron ridge waveguide and a second site of the second waffle-iron ridge waveguide.

A directional coupler (100) comprises two hollow bodies (200, 201) forming two waveguide portions. Each hollow body has an open end arranged at a first side (10) of the hollow body and another open end arranged at a second side (20) of the hollow body in opposite to the first side in a longitudinal direction (30) of the hollow body. The hollow body has a first cross section perpendicular to the longitudinal direction. A second cross section along the longitudinal direction defines a first plane of propagation of the electric field. The two waveguide portions have a common wall along the longitudinal direction (30) forming a septum (400) between the two waveguide portions on a second plane orthogonal to the first plane. The septum has an aperture (410) for coupling the two waveguide portions. The aperture has a shape comprising a part (420) slanted with respect to the longitudinal direction.

An improved system for simplifying a complex waveguide network in a satellite system is described herein. A waveguide network device may be configured with at least two housing portions attached together. This enables the waveguide network device to receive an arbitrary number of waveguide routes and output the routes in any configuration, effectively simplifying the overall waveguide network architecture.