A power divider/combiner includes a main conductor defining an axis and having an outer surface; an input connector, at a front end, having a center conductor, electrically coupled to the main conductor and having an axis aligned with the main conductor axis; a first hollow cylindrical conductor having an open end facing rearwardly, having an inner cylindrical surface, the main conductor being received in and spaced apart from the inner cylindrical surface, the first hollow cylindrical conductor being electrically coupled to the second conductor of the input connector; a second hollow cylindrical conductor having an open end facing forwardly, the first cylindrical conductor being received in and spaced apart from the inner cylindrical surface of the second cylindrical conductor; a third hollow cylindrical conductor having an open back end facing rearwardly, the second cylindrical conductor being received in and spaced apart from the inner cylindrical surface of the third cylindrical conductor; and a plurality of output connectors, the output connectors being angularly spaced apart relative to each other, the output connectors having center conductors electrically coupled to the third cylindrical conductor. Methods are also provided.

A high frequency cable includes a center conductor comprising one first wire, which is located at the center of the center conductor, and a plurality of second wires, which are located around that one first wire, and the one first wire and the plurality of second wires are stranded together. Respective outer peripheral surfaces of the plurality of second wires constitute a substantially continuous circular peripheral surface as an outer peripheral surface of the center conductor.

A cryptographic device (100) arranged to compute a target block cipher (B.sub.t) on an input message (110), the device comprising a first and second block cipher unit (121, 122) arranged to compute the target block cipher (B.sub.t) on the input message, and a first control unit (130) arranged to take the first block cipher result and the second block cipher result as input, and to produces the first block cipher result only if the block cipher results are equal.

A signal transmission cable includes a signal line, an insulation layer configured to cover the signal line, and a plating layer configured to cover the insulation layer. An arithmetic average roughness Ra of an outer peripheral surface of the insulation layer is between 0.6 m and 10 m inclusive. A method of manufacturing the signal transmission cable includes covering the signal line with the insulation layer, followed by conducting a dry-ice-blasting on the outer peripheral surface of the insulation layer, followed by conducting a corona discharge exposure process on the outer peripheral surface, and forming the plating layer on the outer peripheral surface.

Adaptions and improvements to coaxial metal powder filters include distributing a dissipative matrix mixture comprising superconductive material, metal powder, epoxy, and/or magnetic material within a volume defined by an outer tubular conductor and inner conductor. The frequency response of the filter may be tuned by exploiting the energy gap frequency of superconductive material in the dissipative matrix. The inner surface of the outer tubular conductor may be covered with a superconductive material. For a dissipative matrix comprising magnetic material or superconductive powder particles of a certain size, an external magnetic field can be applied to tune the frequency response of the filter.

The present invention relates to a method for manufacturing a nonmagnetic water-cooled microwave ablation needle. The manufacturing method is designed for a microwave ablation needle of a nonmagnetic material and has a proper process procedure, favorable assembly quality, and high production efficiency. The produced nonmagnetic water-cooled microwave ablation needle is applicable to microwave tumor ablation surgery in a nuclear magnetic resonance imaging environment, and helps a doctor in charge to clearly determine a position of a tumor, improve piercing precision, have preferable control on a whole surgery process, improve a success rate of the surgery, reduce damage on surrounding normal tissues as much as possible on the premise of effectively inactivating the tumor, alleviate pain of a patient, and shorten a recovery cycle.

Embodiments include semiconductor packages and method of forming the semiconductor packages. A semiconductor package includes first waveguides over a package substrate. The first waveguides include first angled conductive layers, first transmission lines, and first cavities. The semiconductor package also includes a first dielectric over the first waveguides and package substrate, second waveguides over the first dielectric and first waveguides, and a second dielectric over the second waveguides and first dielectric. The second waveguides include second angled conductive layers, second transmission lines, and second cavities. The first angled conductive layers are positioned over the first transmission lines and package substrate having a first pattern of first triangular structures. The second angled conductive layers are positioned over the second transmission lines and first dielectric having a second pattern of second triangular structures, where the second pattern is shaped as a coaxial interconnects enclosed with second triangular structures and portions of first dielectric.

A quasi-coaxial transmission line, a semiconductor package including the same and a method of manufacturing the same are disclosed. The quasi-coaxial transmission line includes a core, which is formed through an upper surface and a lower surface of a base substrate so as to transmit an electrical signal, and a shield, which is spaced apart from the core and which coaxially surrounds a side surface of the core, at least a portion of the shield being removed so as to form an open portion. The quasi-coaxial transmission line is capable of preventing distortion of an electrical signal at a portion thereof that is connected to an external circuit board and to reduce an area of a semiconductor package including the quasi-coaxial transmission line.

A cryptographic device is configured to compute a target block cipher (B.sub.t) on an input message and includes a control unit, and first and second block cipher units for computing the target block cipher (B.sub.t) on the input message. The control unit is configured to take the first block cipher result and the second block cipher result as input, and to produce the first block cipher result only when the first and second block cipher results are equal.

Disclosed is a production process for slotting an outer conductor of a leaky cable, through which an integrated production line incorporating a metal strap slotting production line, a metal strap longitudinal coating production line and a sheathing production line is provided. A semi-finished product from a leaky cable insulation process is subsequently processed by laser in a numerical control laser cutting device for cutting out corresponding slot holes in a metal strap to produce a slotted outer conductor. Then the slotted metal strap is embossed, and directly coated on an insulator in a longitudinal coating forming mould of the outer conductor. The final sheathing process is completed in a sheath plastic extruding machine to produce a finished leaky cable product. The processes of the outer conductor of the leaky cable, including the raw material punching, the longitudinal coating forming, and the outer sheathing, are finished at one time.