摘要:
A grommet which is formed from a self-lubricating rubber, and can be fixed by means of a wire such as electric wires and an adhesive tape. The rubber grommet (10) is fixed to the electric wire (14) with the adhesive tapes (12, 12) and inserted into a through hole (22) penetrating through a partition (20) to provide sealing between the electric wire (14) and an inner wall of the through hole (22). Rubber forming the grommet (10) is a self-lubricating rubber containing an oily polyalkyl carbonate, which is represented by the following chemical formula: Ri—O—CO—O—[CH2CH2C(CH3)HCH2CH2—O—CO —O]n—Ri wherein n is an integer of 1 to 8, and Ri represents (i—C7H15).
摘要翻译:由自润滑橡胶形成的索环,可以通过诸如电线和胶带的线固定。 橡胶垫圈(10)用粘合带(12,12)固定在电线(14)上并插入穿过隔板(20)的通孔(22)中,以在电线(14) 和通孔(22)的内壁。 形成垫圈(10)的橡胶是含有油性聚碳酸烷基酯的自润滑橡胶,其由以下化学式表示:其中n为1至8的整数,并且R 1表示(i-C 7 H 15)。
摘要:
A chip carrying member (1) such as a film carrier carrying a chip (10) and elastic spacers (2, 3) are stacked to form an elementary unit with adjusting its thickness. By using an aligning aperture (12) of a thin sheet (1), a plurality of the elementary units are stacked to form a laminated structure. From a side surface of the laminated structure, leads (13) are extended to be connected to a wiring board (241), or after the leads (13) are buried in an insulator (8), the leads (13) and insulator (8) are abraded to form a coplanar surface and then a wiring layer (82) for interconnecting is formed on the abraded surface. A usual chip can be mounted on the chip carrying member (1) without any work with a high accuracy in alignment of the lamination and furthermore with a high accuracy in a lamination pitch of the chip carrying member (1), so that the leads (13) of the chip (10) can be wired precisely and finely. A low cost and high density three-dimensional packaging structure can be realized.
摘要:
A mobile communication terminal equipment is mounted in a vehicle and can utilize both the satellite and terrestrial communication systems. The mobile communication terminal equipment includes a satellite transceiver and a portable set. The satellite transceiver has a satellite transmission/reception circuit. As required, the portable set is disconnected from the satellite transceiver to be carried by the user. The portable set includes a terrestrial transmission/reception circuit, a signal input/output circuit and a connection selecting switch. The connection selecting switch is automatically controlled to connect the signal input/output circuit selectively to one of the satellite and terrestrial transmission/reception circuits. When the satellite transmission/reception circuit is in connection with the signal input/output circuit, the communication through the satellite wireless communication system can be carried out. When the terrestrial transmission/reception circuit is connected to the signal input/output circuit, the communication through the terrestrial wireless communication system can be carried out.
摘要:
An antenna system having a main reflector, a sub-reflector, and a plurality of horns for radiating different frequencies includes a beam waveguide system which cancels cross polarization otherwise inherent in the system. If the antenna system uses a non-rotationally-symmetric sub-reflector the cross polarization caused thereby is cancelled by the beam waveguide system having at least two focusing reflectors and selected parameters. Alternatively the beam waveguide system can be used with a rotationally symmetric and stationary sub-reflector by being positioned to reflect said beam on the axis of the main reflector. Either the horns or the focusing reflectors may be rotatably switched, the other group being stationary.
摘要:
Each of a transmitter and a receiver connected to an antenna through a duplexer includes a .pi./2 and a .pi. polarizer and an ortho-mode transducer (OMT) serially interconnected. In the receiver the OMT is connected at one output to a branching circuit and at the other output to a coupler which is connected to the branching circuit through a transfer circuit. In the transmitter, the OMT is connected at one input to a branching circuit and at the other input to a coupler subsequently connected to the branching circuit through a transfer circuit.
摘要:
A monopulse antenna apparatus and antenna structure comprising a single horn having four dielectric bars which are internally inserted into the horn and symmetrically positioned along the axis of the horn. Each one end of the bars are fixed to the end wall of a rectangular waveguide and the other end is extending outwardly along the axis of the rectangular waveguide, thus these four dielectric bars are excited by externally applied electromagnetic waves. The four dielectric bars respectively cause the electric field to converge on the bars, and the single horn with four internally inserted dielectric bars acts as if it is partitioned into four horns.
摘要:
Two antenna units (11) and (12) are located on a pedestal device (13) provided rotatably around an azimuth angular axis thereof, and a rotating mechanism for rotating in an azimuth angular direction and an elevation angular direction respectively is provided in each of the antenna units (11, 12). The antenna units (11) and (12) execute, for the purpose of communicating with the orbital satellites (81) and (82) respectively, satellites tracking by adjusting its own azimuth angle and elevation angle while moving in association with rotation of the rotating mechanism (14) of the pedestal device (13).
摘要:
A mobile communication terminal equipment is mounted in a vehicle and can utilize both the satellite and terrestrial communication systems. The mobile communication terminal equipment includes a satellite transceiver and a portable set. The satellite transceiver has a satellite transmission/reception circuit. As required, the portable set is disconnected from the satellite transceiver to be carried by the user. The portable set includes a terrestrial transmission/reception circuit, a signal input/output circuit and a connection selecting switch. The connection selecting switch is automatically controlled to connect the signal input/output circuit selectively to one of the satellite and terrestrial transmission/reception circuits. When the satellite transmission/reception circuit is in connection with the signal input/output circuit, the communication through the satellite wireless communication system can be carried out. When the terrestrial transmission/reception circuit is connected to the signal input/output circuit, the communication through the terrestrial wireless communication system can be carried out.
摘要:
A balun is used in electric communications for supplying power to a balanced line from an unbalanced circuit, a power feeder consisting of a microstrip line. Two microstrip center conductors are connected to the balanced line, and are supplied with signals of opposite phases. This makes it possible to convert an unbalanced current flowing through the microstrip line to a balanced current flowing through the balanced line.
摘要:
To obtain a high-performance antenna apparatus free from the shift of its focusing point, there are provided a plurality of pairs of horns, horns of each pair are arranged at opposite positions with respect to the center of the plurality of horns, and each pair of horns operates at a different frequency band.