Abstract: A two-port triplate-line/waveguide converter in one embodiment of this invention is provided with a rectangular waveguide and two probes that connect to central conductors of separate trip late lines via slits, said slits being formed separately on two opposing inside walls of the rectangular waveguide and lying on an imaginary straight line that is perpendicular to said inside walls. The two probes, the tips of which are bent inside the rectangular waveguide, constitute monopole antennas with the aforementioned inside walls functioning as the ground planes thereof.

Abstract: A feed line in the form of a trip late line that runs from a waveguide/triplate-line converter coupled to a radio to a plurality of patch antennas in a cluster pattern. The width and length of a section of said feed line between the waveguide/triplate-line converter and the branch point nearest thereto are set such that the impedance of said section directly matches the parallel combination of the impedances of branches beyond said branch point and the loss in said section is kept to or below a predetermined upper limit.

Abstract: A two-port triplate-line/waveguide converter in one embodiment of this invention is provided with a rectangular waveguide and two probes that connect to central conductors of separate trip late lines via slits, said slits being formed separately on two opposing inside walls of the rectangular waveguide and lying on an imaginary straight line that is perpendicular to said inside walls. The two probes, the tips of which are bent inside the rectangular waveguide, constitute monopole antennas with the aforementioned inside walls functioning as the ground planes thereof.

Abstract: A feed line in the form of a trip late line that runs from a waveguide/triplate-line converter coupled to a radio to a plurality of patch antennas in a cluster pattern. The width and length of a section of said feed line between the waveguide/triplate-line converter and the branch point nearest thereto are set such that the impedance of said section directly matches the parallel combination of the impedances of branches beyond said branch point and the loss in said section is kept to or below a predetermined upper limit.

Abstract: There are provided a radiation-proof resin composition that is excellent in mechanical characteristics even after exposure to harsh radiation (with 2.5 MGy), that exhibits a suitable radiation-resistant properties by a small amount of mixed additives, and that can suppress the blooming of the additives, and a radiation-resistant wire/cable. The radiation-resistant resin composition is obtained by adding 0.3 to 1.0 parts by mass of a salicylate-based UV absorber, 0.3 to 5 parts by mass of a benzotriazole-based UV absorber, and 0.3 to 5 parts by mass of a triazine-based UV absorber to 100 parts by mass of a polyolefin-based resin.

Abstract: A tabular form element arrangement data describing the arrangement of various component elements constituting a production system along the work flow in a combination of process identification names with component element names, is prepared. Element definition files describing programs for simulating the operations of various component elements are prepared. A program preparation unit sequentially reads component element names combined with process identification names from the element arrangement data and sequentially reads the element definition files corresponding to the read component element names. A variable array containing variables described in respective element definition files is prepared simultaneously along with an initial process program array containing programs described in respective definition files and a simulation program array.

Abstract: There are provided a radiation-proof resin composition that is excellent in mechanical characteristics even after exposure to harsh radiation (with 2.5 MGy), that exhibits a suitable radiation-resistant properties by a small amount of mixed additives, and that can suppress the blooming of the additives, and a radiation-resistant wire/cable. The radiation-resistant resin composition is obtained by adding 0.3 to 1.0 parts by mass of a salicylate-based UV absorber, 0.3 to 5 parts by mass of a benzotriazole-based UV absorber, and 0.3 to 5 parts by mass of a triazine-based UV absorber to 100 parts by mass of a polyolefin-based resin.

Abstract: An optical fiber ribbon and an optical fiber cable are described in which light loss during winding an optical fiber ribbon on a bobbin and during installation of optical fiber ribbons in an optical fiber cable is prevented by giving slip characteristics to the surface of the optical fiber ribbon to avoid increase of light loss. The optical fiber ribbon comprises a plurality of individual optical fibers and a ribbon material covering said individual optical fibers in the form of a ribbon. The ribbon material is made of a UV curable resin having a monomer structure or an oligomer structure and provided with a slip characteristic. The optical fiber cable is composed of a plurality of the optical fiber ribbons.

Abstract: A single optical fiber tight cord having durable surface which is not cracked even under bending stress is described. The single optical fiber tight cord comprises a optical fiber; a plurality of glass fibers which are located around said optical fiber in parallel with said optical fiber; a UV curable resin provided around said optical fiber together with said glass fibers for fixing said glass fibers around said optical fiber; a UV curable resin layer covering and fixed around said optical fiber; and an outermost layer covering and fixed around said UV curable resin layer and made of a resin which is more excellent than said UV curable resin layer in tractility.