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US 6,646,607 B2Granted
Antenna system, transceiver, electrical equipment, and computer terminal
AssigneeInternational Business Machines Corporation
InventorsHideyuki Usui, Takeshi Asano
Life of this patent
Estimating the term…
Abstract
A first antenna and a second antenna in first and second antenna-only areas of each face of an insulating substrate are arranged to decrease an antenna system having a plurality of antennas in size as the first antenna-only area and the second antenna-only area at least overlap with each other when viewed from a direction vertical to a face of the insulating substrate.
Claims13
An antenna system, comprising:
- an insulating substrate having a first antenna-only area and a second antenna-only area that overlap with each other when viewed from a direction vertical to a face at both side faces respectively;
- a first antenna whose element is formed by a conductive film in the first antenna-only area of said insulating substrate as an antenna for transmitting and/or receiving radio waves of a first frequency;
- and a second antenna whose element is formed by a conductive film in the second antenna-only area of said insulating substrate as an antenna for transmitting and/or receiving radio waves of a second frequency lower than said first frequency, wherein said first and second antennas are respectively provided with a radio-wave portion and a ground portion extending in parallel with each other, and the ground portions of said first and second antennas almost overlap with each other when viewed from a direction vertical to a face of said insulating substrate.
A transceiver, comprising:
- an insulating substrate having first and second antenna-only overlapping with each other when viewed from a direction vertical to a face at the both side faces respectively;
- a first antenna whose element is formed by a conductive film in the first antenna-only area of said insulating substrate as an antenna for transmitting and/or receiving radio waves of a first frequency;
- a second antenna whose element is formed by a conductive film in the second antenna-only area of said insulating substrate as a antenna for transmitting and/or receiving radio waves of a second frequency lower than said first frequency;
- a ground via for connecting ground portions of said first and second antennas each other;
- a feed via for connecting feed points at the radio-wave resonant portions of said first and second antennas each other;
- a feed cable whose ground line and feed line are connected to said feed via and the ground portion of said first or second antenna, respectively;
- and a frame ground member connected to the ground portion of said first or second antenna.
4 more elements
Electrical equipment, comprising a transceiver, wherein said transceiver has:
- an insulating substrate having first and second antenna-only areas at least overlapping with each other when viewed from a direction vertical to a face at the both side faces;
- a first antenna whose element is formed by a conductive film in the first antenna-only area of said insulting substrate as an antenna for transmitting and/or receiving radio waves of a first frequency;
- a second antenna whose element is formed by a conductive film in the second antenna-only area of said insulating substrate as an antenna for transmitting and/or receiving radio waves of a second frequency lower than said first frequency;
- a ground via for connecting ground portions of said first and second antennas each other;
- a feed via for connecting feed points at the radio-wave resonant portions of said first and second antennas each other;
- a feed cable whose ground line and feed line are connected to said feed via and the ground portion of said first or second antenna, respectively;
- a first signal-processing unit for said first antenna;
- a second signal-processing unit for said second antenna;
- and a selection unit for selecting either of said first and second signal-processing unit and connecting the selected signal-processing unit to said feed cable.
6 more elements
A computer terminal, comprising:
- a body having an operational portion;
- a cover for covering said body at a closed position where a display is set;
- and a hinge member for connecting said body and said cover each other so that said cover swings between its closed position and open position against said body, wherein said cover includes:
- an insulating substrate having first and second antenna-only areas at least overlapping with each other when viewed from a direction vertical to a face at the both side faces;
- a first antenna whose element is formed by a conductive film in the first antenna-only area of said insulting substrate as an antenna for transmitting and/or receiving radio waves of a first frequency;
- a second antenna whose element is formed by a conductive film in the second antenna-only area of said insulating substrate as an antenna for transmitting and/or receiving radio waves of a second frequency lower than said first frequency;
- a ground via for connecting ground portions of said first and second antennas each other;
- a feed via for connecting feed points at the radio-wave resonant portions of said first and second antennas each other;
- and a feed cable whose ground line and feed line are connected to said feed via and the ground portion of said first or second antenna, respectively.
6 more elements
Dependencies are inferred from the claim text.