摘要:
A GPS antenna is provided with a reflective conductor portion. Thereby, an electromagnetic wave radiated from an antenna conductor portion in a predetermined direction can be grounded electrically, and thus radiation of the electromagnetic wave in a direction (arbitrary direction) opposite to the predetermined direction can be enhanced. As a result, the directivity of the electromagnetic wave in the arbitrary direction can be enhanced to improve the positioning accuracy.
摘要:
The objective of the present invention is to provide a connection cable that serves as an external antenna for a radio apparatus, and whose antenna performance is not deteriorated in the use state by an adverse affect attributable to the near proximity of a human body.According to the present invention, an antenna device, integrally formed with first connection means, which is to be connected to a radio apparatus, second connection means, which is to be connected to a peripheral device, and a connection cable and an antenna element, which are located in between and which transmit a plurality of signals from the radio apparatus to the peripheral device, includes: first relay means, located at a middle position in the connection cable, for relaying the plurality of signals; the antenna element, located between the second connection means and the first relay means; and a coaxial line, located between the first connection means and the first relay means for transmitting, to the radio apparatus, an antenna reception signal that has been received at the antenna element and has been extracted by the first relay means, wherein the antenna element serves as an external antenna for the radio apparatus.
摘要:
An antenna element 5 includes a substantially rectangular first conductor plate 51 that is arranged at a predetermined space S from a lower circuit board (a ground plate) 21 and in the vicinity of a hinge 4; a substantially rectangular second conductor plate 52 that shares one widthwise side of the first conductor plate 51 and that is placed while bent at an angle of about 90° with respect to the first conductor plate; and a substantially rectangular third conductor plate 53 that shares another widthwise side of the second conductor plate 52 opposing the one side of the second conductor plate 52 shared by the first conductor plate 51 and that is arranged at an angle of about 90° so as to oppose the first conductor plate 51. The rectangular parallelepiped antenna element 5 is formed by folding a rectangular, board-shaped monopole element into two faces or more.
摘要:
A portable wireless device is capable of maintaining performance of an antenna without being affected by the state of the housing fitted with the antenna even if the housing is rotated around a rotation axis thereof by a predetermined angle. A portable wireless device 10 comprises an upper casing 21 provided with a balanced antenna 43 and a facing section 22a to be faced with the upper casing 21. The portable wireless device has two states including a first facing state in which the housing is in face to face relationship with the facing section and a second facing state in which the housing rotated around a rotation axis thereof by a predetermined angle is in face to face relationship with the facing section. The balanced antenna 43 has a shape symmetrical about a rotation axis 23b that is a rotation axis of the upper casing.
摘要:
The objective of the present invention is to provide a connection cable that serves as an external antenna for a radio apparatus, and whose antenna performance is not deteriorated in the use state by an adverse affect attributable to the near proximity of a human body.According to the present invention, an antenna device, integrally formed with first connection means, which is to be connected to a radio apparatus, second connection means, which is to be connected to a peripheral device, and a connection cable and an antenna element, which are located in between and which transmit a plurality of signals from the radio apparatus to the peripheral device, includes: first relay means, located at a middle position in the connection cable, for relaying the plurality of signals; the antenna element, located between the second connection means and the first relay means; and a coaxial line, located between the first connection means and the first relay means for transmitting, to the radio apparatus, an antenna reception signal that has been received at the antenna element and has been extracted by the first relay means, wherein the antenna element serves as an external antenna for the radio apparatus.
摘要:
A scroll machine has a sealed housing divided into a high-pressure side and a low-pressure side by a discharge cover, a stationary scroll and a swivel scroll housing within the low-pressure side of the sealed housing, a frame with legs fixed within the sealed housing, a support spring through which the stationary scroll is attached to the top ends of the legs of the frame, and an intermediate pressure chamber formed by sealingly engaged parts of the rear portion of the stationary scroll and an inner surface of the discharge cover so that the stationary scroll will be pressed against the swivel scroll by hydraulic pressure introduced into the intermediate pressure chamber. The frame is plug-welded to the sealed housing at a plurality of points lying along the outer circumferences of the legs of the frame, the top ends of the legs of the frame are connected to each other with a reinforcing plate or the legs are fitted to the inner surface of the housing, so as to prevent lateral displacement of the stationary scroll and the breakage of sealing members at the parts defining the intermediate pressure chamber.
摘要:
An information processing system to convert a first document file, including main data and setting information for processing the main data, processable by a first information processing apparatus to a second document file, including main data and setting information for processing the main data, processable by a second information processing apparatus, includes circuitry configured to determine whether a first data structure of the setting information proces sable by the first information processing apparatus and a second data structure of the setting information proces sable by the second information processing apparatus are different, and convert the first data structure of the setting information in the first document file into the second data structure of the setting information proces sable by the second information processing apparatus to generate the second document file when determining that the first data structure and the second data structure are different.
摘要:
It is made possible to realize both miniaturization and a wider band in an antenna element. An antenna element includes a first conductor wire part 11A; a second conductor wire part 11B crossing the first conductor wire part 11A and connected; a third conductor wire part 11C crossing the second conductor wire part 11B and connected, and parallel to the first conductor wire part 11A; a fourth conductor wire part 11D crossing the third conductor wire part 11C and connected; and a first conductor flat plate 12 connected to one or two of the first conductor wire part 11A, the second conductor wire part 11B, the third conductor wire part 11C, and the fourth wire part 11D and disposed in the area surrounded by any three of the first conductor wire part 11A, the second conductor wire part 11B, the third conductor wire part 11C, and the fourth wire part 11D. An end part of the first conductor flat plate 12 is parallel with the first conductor 11A not connected to the first conductor flat plate 12.
摘要:
A polarization switching antenna device capable of switching a polarization without increase of an antenna installing space and also handling a variety of frequency bands is provided. A connection state of one end of a loop antenna element arranged on a side surface of a case is switched. Thus, the polarization characteristic is switched by switching selectively whether the antenna element should constitute a loop antenna or a linear antenna. Matching circuits suitable for respective characteristics are provided. The loop antenna can be fed in terms of a balanced feeding. A balanced feeding and an unbalanced feeding can be switched.
摘要:
An antenna element includes: a first conductive plate which is approximately rectangular; a second conductive plate which shares one side of the first conductive plate in the width direction, which is placed substantially perpendicularly to the first conductive plate, and which is approximately rectangular; a third conductive plate which shares another side of the second conductive plate in the width direction, the other side being opposed to the one side shared with the first conductive plate, which is placed perpendicularly to be opposed to the first conductive plate, and which is approximately rectangular; a fourth conductive plate which shares one sides of the first conductive plate, the second conductive plate, and the third conductive plate; a sixth conductive plate which extends from one side of the fourth conductive plate that does not share one sides of the first conductive plate, the second conductive plate, and the third conductive plate, and which is placed substantially perpendicularly to the fourth conductive plate; slits which are disposed respectively between the sixth conductive plate, and the first conductive plate and the third conductive plate; a short pin which connects the ground plate to the first conductive plate or the second conductive plate; and a feed pin which is connected to the first conductive plate or the second conductive plate in parallel to the short pin and in adjacent to the short pin.