Abstract:
The present disclosure relates to a waveguide gasket (1) arranged for electrically sealing a waveguide interface (2) between a first contact end (7) and second contact end (8) of the waveguide gasket. The waveguide gasket (1) comprises a plurality of electrically conducting members (3) that are positioned along a circumference (4) along which the waveguide gasket (1) extends. Each electrically conducting member (3) has a first end (5) and a second end (6) compressibly separable by a variable first height (h 1 ) along a first direction (d 1 ). Each first end (5) faces the first contact end (7) and each second end (6) faces the second side contact end (8), where each first contact end (7) and each second contact end (8) are separated by a variable second height (h 2 ) along the first direction (d 1 ), At least one electrically conducting member (3) is arranged to expand only along said circumference (4) when compressed.
Abstract:
A dielectric rod antenna assembly includes a metallic waveguide section and an air surrounded dielectric rod radiator section with corrugations formed between the metallic waveguide section and the air-surrounded dielectric rod radiator section. The corrugations are preferably formed in an transition portion between the dielectric, rod and the metallic waveguide section. The corrugations may be formed either in the dielectric rod or in the metallic waveguide. The presence of the corrugations has been found to reduce sidelobes of E-H (electro-magnetic) radiation transmitted by the assembly in use. The antenna assembly reduces the sidelobe levels and improves bandwidth and E-H plane symmetry of dielectric rod antennas thereby reducing wastage of microwave energy to sidelobes, susceptibility to interference and improving the polarisation purity of the transmitted and received signals.
Abstract:
An apparatus includes: an electromagnetic waveguide and an iris structure providing an iris in the electromagnetic waveguide. The iris structure defines an iris hole. The apparatus further includes an electric field rotation arrangement configured to establish a 2N-pole electric field around a circumference of the iris hole, wherein N is an integer which is at least two. The electric field rotation arrangement may include at least four iris slots, each in communication with the iris hole, wherein a first one of the iris slots is further in disposed at a first side of the iris hole and a second one of the iris slots is disposed at a second side of the iris hole which is opposite the first side.
Abstract:
Gasdichte Hohlleitereinkopplung zum Einkoppeln eines elektromagnetischen Sendesignals von einem Hochfrequenzmodul in einen Hohlleiter, wobei die Hohlleitereinkopplung ein planares Strahlerelement aufweist, das auf einer Leiterplatte angeordnet ist und zum Abstrahlen des Sendesignals dient. Die Hohlleitereinkopplung weist darüber hinaus ein dielektrisches Dichtungselement auf, welches den Hohlleiter gasdicht abdichtet. Auf diese Weise kann ein Explosionsschutz bereitgestellt werden.
Abstract:
Ein HF-Generator umfasst einen Festkörperschalter, einen in eine z-Richtung verlaufenden Horn-Wellenleiter mit einem ersten Längsende und einem zweiten Längsende und einen in z-Richtung verlaufenden zylindrischen Hohlleiter mit einem dritten Längsende. Dabei ist eine in einer x-y-Ebene angeordnete erste Querschnittsfläche des Horn-Wellenleiters am ersten Längsende kleiner als eine in einer x-y-Ebene angeordnete zweite Querschnittsfläche des Horn-Wellenleiters am zweiten Längsende. Ferner ist das zweite Längsende des Horn-Wellenleiters am dritten Längsende des Hohlleiters angeordnet. Ausserdem ist der Festkörperschalter am ersten Längsende des Horn-Wellenleiters angeordnet, um eine elektromagnetische Schwingung in dem Horn-Wellenleiter anzuregen. Schliesslich ist der Festkörperschalter von einem metallischen Schirmgehäuse umschlossen.
Abstract:
A radar level gauge with an improved quick connect/disconnect waveguide joint and method regarding same are provided. A cylindrical waveguide assembly (18) includes a quick connect/disconnect waveguide joint (22) between a radar circuitry (14) and an antenna (16) of the radar level gauge. The quick connect/disconnect waveguide joint may be include a discontinuous annular body (30) extending between a first axial end (32) and a second axial end (34) of the quick connect/disconnect waveguide joint and may be configured for connecting with a waveguide member (23) electrically coupled to the antenna to provide a compliant interference fit with the waveguide member. Disclosed embodiments are expected to allow service personnel to perform in a more user-friendly manner servicing operations. For example, without having to deal with the burdensome operations commonly involved for accessing and manipulating interconnected components in a coaxial waveguide arrangement, as may involve a coaxial connector and associated cabling.
Abstract:
Improved radar level gauge and improved waveguide assembly (18) for such a radar level gauge are disclosed. The waveguide assembly (18) may include a first waveguide member (20) electrically coupled to radar circuitry (14), and may further include a second waveguide member (22) electrically coupled to an antenna (16) for the radar level gauge. A dielectric barrier (12) is arranged between first waveguide member (20) and second waveguide member (22) to provide galvanic isolation between the radar circuitry and the antenna. The dielectric barrier includes means for self-aligning a body of the dielectric barrier relative to a longitudinal axis (24) of the waveguide assembly. This self-alignment feature for the dielectric barrier is effective to reliably maintain appropriate impedance matching at the frequencies of interest and thus avoid the formation of spurious signal reflections.
Abstract:
High speed waveguide-based data communication systems are disclosed. Such systems may include separable electrical connectors, forming signal propagation paths between electronic assemblies with one or more waveguides.
Abstract:
A waveguide radiating element (10) is described comprising : - an electrically conductive support body (2, 12) inside which a first recess (3) is defined, delimited at the front by a radiating opening (4), and laterally delimited by at least one side wall (5, 6); - at least one electrically conductive impedance matching unit (20) having a portion (21) projecting from said side wall (5, 6) and positioned inside the first recess (3), the projecting portion (21) having a step or ramp-shaped surface. The impedance matching unit (20) comprises an attachment portion (22) adjacent to the projecting portion (21) and inside the electrically conductive body (2) a second recess (13) is defined, adjacent to the first recess (3) and communicating with the first recess (3), inside which the attachment portion (22) of the impedance matching unit (20) is coupled.