Antenna system and portable radio device
First Claim
1. An antenna system to be mounted on a portable radio device, comprising:
- a first antenna element; and
a second antenna element longer than the first element;
whereinthe first antenna element is set so that the direction of the antenna current of the first antenna element is vertical to one side of a substrate of the portable radio device, andthe second antenna element is set so that the direction of the antenna current of the second antenna element is parallel with the one side, the first and second antenna elements being arranged at positions which are not overlapped by the substrate.
2 Assignments
0 Petitions
Accused Products
Abstract
An object of the present invention is to secure good communication quality in a small-housing portable radio in which an antenna system having two antenna elements for providing for multi-frequency-bands is built. A substrate on which a high-frequency circuit and an earth plate are mounted and an antenna system is built in the housing of a portable radio device. A shorter coil element of two coil elements is set so that the direction of the antenna current is vertical to one side of a substrate and the longer coil element is set so that the direction of the antenna current is parallel with the side. Therefore, it is possible to set two coil elements in a small space in a housing after setting the substrate while directions of the antenna currents of the coil elements are orthogonal to each other (while mutual interference between the elements is small). Therefore, it is possible to secure good communication quality even for a small-housing portable radio device.
9 Citations
7 Claims
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1. An antenna system to be mounted on a portable radio device, comprising:
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a first antenna element; and a second antenna element longer than the first element;
whereinthe first antenna element is set so that the direction of the antenna current of the first antenna element is vertical to one side of a substrate of the portable radio device, and the second antenna element is set so that the direction of the antenna current of the second antenna element is parallel with the one side, the first and second antenna elements being arranged at positions which are not overlapped by the substrate. - View Dependent Claims (2, 3, 4, 5)
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6. A portable radio device having an antenna system including a first antenna element and a second antenna element longer than the first antenna element in the housing of the portable radio device, wherein
the first antenna element is set so that the direction of the antenna current of the first antenna element becomes vertical to one side of a substrate to be mounted in the housing, and the second antenna element is set so that the direction of the antenna current of the second antenna element becomes parallel with one side of the substrate, the first and second antenna elements being arranged at positions which are not overlapped by the substrate.
Specification
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- Resources
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Current AssigneeLenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
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Original AssigneeNEC Corporation
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InventorsIde, Yoshiyuki
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Primary Examiner(s)Nguyen; Hoang V.
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Application NumberUS11/200,300Publication NumberTime in Patent Office650 DaysField of Search343/895, 343/702, 343/725, 343/700.MSUS Class Current343/702CPC Class CodesH01Q 1/243 with built-in antennasH01Q 1/362 for broadside radiating hel...H01Q 11/08 Helical antennasH01Q 21/29 Combinations of different i...H01Q 21/30 Combinations of separate an...
