摘要:
The network antenna of the RLSA type in the form of a radial waveguide has a feed structure allowing simultaneous excitation of the antenna in two orthogonal linear polarizations. The feed structure, essentially placed to the rear of the antenna, consists of a circular waveguide placed at the centre of the radial waveguide and coupled to the latter by two circular slots for the excitation of the antenna in a first linear polarization and of a coaxial waveguide surrounding the circular waveguide and coupled to the radial waveguide by radial slots, the coaxial waveguide being excited by a ring-shaped waveguide placed coaxially on the outer periphery of the coaxial waveguide and coupled to the latter by slots distributed around the inner periphery of the ring for the excitation of the antenna in a second linear polarization orthogonal to the first linear polarization.
摘要:
The invention relates to a dipole type wideband antenna comprising a substrate presenting two faces, a first conductive arm, a second conductive arm placed on the substrate, a feeder line supplying the second arm passing under the first arm, In this case, the feeder line extending by a line element placed under the second arm, this element being dimensioned to filter a given frequency.
摘要:
The present invention relates to a method for producing an antenna comprising a conductive wire, formed by a wire, made of a conductive material, whose path has a helical shape. In accordance with the invention, such a method is characterized in that a print is formed in relief on one side of an element of an electrically insulating material such that the helical shape is generated by depositing the conductive material in this print.
摘要:
The invention reduces the size of waveguide circuits. The invention proposes to change the cross section of a waveguide in a curved part. Thus, a curved element according to the invention makes it possible at the same time to make a change in waveguide cross action.
摘要:
The invention relates to a source antenna constituted by a radiating aperture comprising at least one insert made of a dielectric material mounted floating inside the aperture.
摘要:
The invention proposes an optimized solution of a frequency/polarization splifter that requires no adjustment after production and can be produced entirely by moulding. The polarized-wave splitter comprises various components, including a polarization splitter 1 coupled to two filters 3 and 5 via transition regions 2 and 4. The overall dimensions of the various components are such that the transfer characteristics of the splitter are better than the characteristics resulting from the sum of the characteristics of the components constituting the splitter.
摘要:
The invention proposes a primary feed providing an asymmetrical illumination compatible with an elliptical reflector and having a small space requirement. The invention uses a short rod to modify the radiation of an open waveguide section. The invention is an antenna comprising a radiating feed made up of a waveguide, one end of the waveguide forming a radiating aperture. The end forming the radiating aperture is fitted with a rod made of dielectric material, said rod being partly inserted in the waveguide. The rod is extended outside the waveguide over a length less than twice the guided wavelength and the section of the rod develops outside the waveguide differently in each of the planes.
摘要:
The network antenna of the RLSA type in the form of a radial waveguide has a feed structure allowing simultaneous excitation of the antenna in two orthogonal linear polarizations. The feed structure, essentially placed to the rear of the antenna, consists of a circular waveguide placed at the centre of the radial waveguide and coupled to the latter by two circular slots for the excitation of the antenna in a first linear polarization and of a coaxial waveguide surrounding the circular waveguide and coupled to the radial waveguide by radial slots, the coaxial waveguide being excited by a ring-shaped waveguide placed coaxially on the outer periphery of the coaxial waveguide and coupled to the latter by slots distributed around the inner periphery of the ring for the excitation of the antenna in a second linear polarization orthogonal to the first linear polarization.
摘要:
The invention relates to a source antenna constituted by a radiating aperture comprising at least one insert made of a dielectric material mounted floating inside the aperture.
摘要:
The invention relates to a dipole type wideband antenna comprising a substrate presenting two faces, a first conductive arm, a second conductive arm placed on the substrate, a feeder line supplying the second arm passing under the first arm.In this case, the feeder line extends by a line element placed under the second arm, this element being dimensioned to filter a given frequency.