Transmitter, computer system, and opening/closing structure
AssigneeInternational Business Machines Corporation
InventorsTakeshi Asano, Kazuo Masuda
Life of this patent
Estimating the term…
Abstract
A portable device having a base member and a hingedly attached lid member does not require a signal cable to transmit a high-frequency signal between the base unit and the lid. While the lid of the lap-top PC is closed, a radio device installed in the base unit transmits a high-frequency signal from a first antenna to a second antenna, the signal is then output from a signal cable attached third antenna to the atmosphere. The device structured as described above can transmit the high-frequency signal in a non-contact manner between the antenna of the base unit and the antenna of the lid in such a way that there is no need to provide a signal cable between the base unit part and the lid part.
Claims18
An apparatus, comprising:
- a first antenna and a second antenna;
- a first member which houses a first circuit and said first antenna, wherein said
- first circuit couples a high-frequency signal to said first antenna, and wherein said first circuit is a circuit selected from the group consisting of:
- a transmitter, a receiver, and a signal generator;
- and
- a second member, movably attached to said first member, and to which said second antenna is attached, wherein said second antenna faces said first antenna in at least one engagement position between said second member and said first member, the engagement positions characterized in that:
- the high-frequency signal is coupled between said first antenna and said second antenna, and
- the distance between said first antenna and said second antenna is greater than zero and less than about λ/8, where λ is the wavelength of the high-frequency signal;
- wherein said first member and said second member are rotatably attached by a cylindrical joint, and wherein said first antenna is disposed along the center axis of the cylindrical joint, and wherein said second antenna is disposed coaxially relative to said first antenna.
An apparatus comprising:
- a first antenna coupled to a first circuit and mounted on a base unit;
- and
- a second antenna coupled to a second circuit and mounted in a movable member which is pivotally connected to the base unit, wherein said second antenna is electrically floating relative to said first antenna and positioned parallel to and overlapping said first antenna, the movable member being connected to the base unit such that when the movable member pivots about the base unit said second antenna remains parallel to said first antenna and moves along the circumference of a circle formed about an axis defined by said first antenna.
An apparatus comprising:
- a first slot antenna coupled to a first circuit and formed as a hollow within a first tube which is mounted on a base unit;
- and
- a second slot antenna coupled to a second circuit and formed as a hollow within a second tube which is mounted in a movable member which is pivotally connected to the base unit, wherein said second slot antenna is electrically floating relative to said first slot antenna, the movable member being connected to the base unit such that:
- the second tube is concentric to the first tube,
- said first and second slot antennas align end to end at both of their respective ends, and
- when the movable member pivots about the base unit, said second slot antenna faces said first slot antenna in at least one position.
Dependencies are inferred from the claim text.