摘要:
An antenna apparatus has a first antenna branch and a second antenna branch. Both the first and the second antenna branch are in the form of a conductor loop which is not closed, and the first antenna branch is arranged at a distance from the second antenna branch in a direction which is substantially at right angles to the surface bounded by the respective conductor loop, such that the first loop direction, which is defined from the foot point to the free end of the first antenna branch, is arranged in the opposite direction to the second loop direction, which is defined from the foot point to the free end of the second antenna branch.
摘要:
In order to reduce the SAR value in a wireless communication device (MP), an additional, current-conducting corrective element (CE1) is coupled to and configured in relation to the printed circuit board (LP) and the antenna (AT1) such that the amplitude level (IM1, NIM1) and/or the phase angle of electrical currents (I3, I1, I2) on the antenna (AT1), the printed circuit board (LP), and the corrective element (CE1) are adjusted relative to each other in such a way that the SAR distribution resulting from such currents becomes minimal.
摘要:
Variable-format web-fed offset printing machine having printing-unit cylinders comprising core cylinders to which compressed air can be applied and onto which intermediate sleeves can be pushed axially and shrunk on radially. Each intermediate sleeve includes a carrier layer whose inner face rests on the core cylinder, a compressible intermediate layer, a transition layer, and a variable-thickness bridging layer, which ends with a covering layer to which a further surface like a printing plate or a rubber blanket can be fitted.
摘要:
A tunable antenna includes separate radiator parts coupled to one another. The coupling between the parts is changed by rotating and/or displacing the parts with respect to one another such that the antenna exhibits a radiation pattern associated with a respective degree of a rotation and/or displacement. A process for manufacturing such antennas includes constructing parts for a respective antenna, coupling the parts to one another to permit them to rotate and/or displace, measuring the radiation pattern of the parts, and adjusting the radiation pattern by rotating and/or displacing the parts with respect to one another to set a nominal radiation pattern of the respective antenna formed by the parts. The couple is changed by rotation and/or displacement of the parts. A respective degree of rotation and/or displacement creates a corresponding change of a radiation pattern of the parts.
摘要:
An antenna apparatus has a first antenna branch and a second antenna branch. Both the first and the second antenna branch are in the form of a conductor loop which is not closed, and the first antenna branch is arranged at a distance from the second antenna branch in a direction which is substantially at right angles to the surface bounded by the respective conductor loop, such that the first loop direction, which is defined from the foot point to the free end of the first antenna branch, is arranged in the opposite direction to the second loop direction, which is defined from the foot point to the free end of the second antenna branch.
摘要:
The invention relates to a radio communication device having at least one additional, current-conducting correction element connected to a printed board in the device. The correction element and printed board are configured in such a manner that a targeted, virtual current path elongation is brought about for an electric current induced on the printed board by electromagnetic radio fields of the antenna while the defined longitudinal and traverse dimensions of the printed board remain substantially unchanged.
摘要:
The present invention is directed to an antenna for radio-operated communication terminal devices. For effecting a multi-band antenna, a planar inverted-F antenna is provided that is designed in size for a predetermined, lower emission frequency and that includes one or more notchings or graduations in longitudinal direction with which one or more geometrical paths derive over whose course emittable waves form with a higher frequency than the predetermined, lower frequency.
摘要:
An antenna device has a first antenna branch and a second antenna branch. Both the first and the second antenna branches have the shape of a non-closed conductor loop and are connected to each other to form a cohesive conductor loop. The respective loop ends are disposed parallel to each other at a distance directed perpendicular (z axis) to the course of the loop. The antenna device has two connections that are disposed in the center section of the cohesive conductor loop at a distance from each other.
摘要:
In a method of determining the distance (d) between an integrated circuit (1) and a substrate (2) a picture (31,32) of the integrated circuit (1) is taken. The integrated circuit (1) is attached to the substrate (2) that is at least semi transparent. An at least semi transparent material, particularly an at least semi transparent adhesive (8), is located between the integrated circuit (1) and the substrate (2). The picture (31,32) of the integrated circuit (1) is taken through the substrate (2) and the material (8). The picture (31,32) and/or image data related to the picture (31,32) is evaluated and the distance (d) between the integrated circuit (1) and the substrate (2) is determined in response to the evaluated picture (31,32) and/or image data related to the picture (31,32).
摘要:
Variable-format web-fed offset printing machine having printing-unit cylinders comprising core cylinders to which compressed air can be applied and onto which intermediate sleeves can be pushed axially and shrunk on radially. Each intermediate sleeve includes a carrier layer whose inner face rests on the core cylinder, a compressible intermediate layer, a transition layer, and a variable-thickness bridging layer, which ends with a covering layer to which a further surface like a printing plate or a rubber blanket can be fitted.