摘要:
The invention relates to a broadband antenna, including: a floorplan (PM); at least one assembly including: a layer (P) of a dielectric material arranged perpendicularly to the floorplan (PM), the layer having a given thickness; a first metal member (11) arranged on a surface of the layer (P); a second metal member (12) arranged on a surface of the layer (P) opposite the surface receiving the first metal member such that the metal members are not opposite each other; a power line combined with one of the two metal members, the power line extending from the edge of the metal member closest to a central axis of symmetry (Δ) of the antenna towards the floorplan (PM).
摘要:
The present invention relates to a multi-sector antenna comprising N (N>1) planar antennas each constituted of a longitudinal radiation slot etched on a first substrate provided with a ground plane and supplied by an excitation line. The N first substrates are fixed on a second common substrate so that the radiation axis of each antenna is parallel to said second substrate, the N first substrates being interconnected around an axis perpendicular to the second substrate. The invention can be applied to high definition wireless cameras.
摘要:
The present invention relates to a planar antenna structure comprising at least one radiating element constituted by a longitudinal radiation slot etched onto a substrate. This structure comprises at least one modification element of the radiation pattern positioned in the radiation zone of the radiating element.
摘要:
The invention relates to a microwave filter comprising a coaxial structure, consisting of a tubular outer conductor and an inner bar conductor. According to the invention, the inner bar conductor extends in an axial direction inside the outer tube and, together with said tube, forms a series of concentric slots in the axial direction thereby defining successive coaxial line segments with low characteristic impedance and coaxial line segments with high characteristic impedance. The aforementioned concentric slots are produced in a synthetic foam block.
摘要:
The invention relates to a microwave filter comprising a coaxial structure, consisting of a tubular outer conductor and an inner bar conductor. According to the invention, the inner bar conductor extends in an axial direction inside the outer tube and, together with said tube, forms a series of concentric slots in the axial direction thereby defining successive coaxial line segments with low characteristic impedance and coaxial line segments with high characteristic impedance. The aforementioned concentric slots are produced in a synthetic foam block.
摘要:
The present invention relates to a planar antenna structure comprising at least one radiating element constituted by a longitudinal radiation slot etched onto a substrate. This structure comprises at least one modification element of the radiation pattern positioned in the radiation zone of the radiating element.
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 transition between a rectangular waveguide and a microstrip line consists of a ribbed rectangular waveguide realised in a foam bar in synthetic material of which the metallized base under the rib continues in the form of a foam plate constituting a substrate for the microstrip line, the rib having a base extending between the upper plane of the ribbed waveguide and the upper plane of the substrate and the microstrip line being disposed on the upper plane of the substrate in the continuation of the base of the rib.
摘要:
The invention concerns a method for making a waveguid microwave antenna with corrugated horn, which consists in forming the corrugattions of the horn on the outer surface off a synthetic material form block followed by surface metallization of the foam block configured to produce the antenna.
摘要:
The invention relates to a wide-band omnidirectional antenna including at least a first conducting member and a second conducting member having a revolution symmetry about a common revolution axis and central openings, said members being arranged opposite each other, at least one member having a progressively flaring area, characterised in that it comprises a gap between the conducting members and a central coaxial excitation line so as to achieve a three-dimensional contactless transition between the coaxial excitation line and the conducting members and members for modifying the radiation pattern in the flaring area of the diode type for selectively radiating the gap depending on the on- or off-state of said diodes.