Antenna device and portable wireless device

Abstract

In a portable wireless device, antenna performance is improved while storing a conductor element in a case without increasing case sizes when two cases are closed. A monopole antenna arranged inside the first case of the portable wireless device is provided with an element (11) on a power supply side, an element (12) on an open end side, and a resonance circuit (13). A width of the open end side element (12) which comes close to an electronic component (10) including a metal arranged inside the second case when the portable wireless device is folded is set smaller than a width of the open end side element (12) which does not come close to the electronic component (10).

Description

technical field [0001] Field of the Invention The present invention relates to a dual-casing portable radio equipment having two housings, and more particularly to a portable radio equipment capable of obtaining good antenna characteristics even when the two housings are closed, and an antenna device for the portable radio equipment. Background technique [0002] In the existing double-casing type portable radio equipment, an antenna made of a plate-shaped conductor is connected to the inside of the first housing on the opposite side to the hinge that connects the first housing and the second housing relatively movably. The folded structure on the end of the first circuit board. [0003] 10(a), (b) are diagrams showing the structure of such conventional portable radio equipment, and only important parts are shown here. 2 in the figure is a first circuit board arranged inside the first housing 1, and the end of the first circuit board 2 is connected to the monopole antenna 6...

AI Technical Summary

Problems solved by technology

[0008] In the existing portable radio equipment shown in Fig. 10 and Fig. 12, in order to make the electronic parts 10 containing metal as the close object in the second casing 3 not to be separated from the monopole antenna 6 in Fig. 10 and the one in Fig. 12 when it is closed Components 11 and 13 are close to reduce the performance of the antenna. As shown in Figure 11 and Figure 13, it is necessary to expand the internal space of the first casing 1 for arranging components 6, 11, 12. For portable devices that require further miniaturization For radio equipment, further setting another space inside the first casing 1 will make the length of the first casing 1 longer, and the length of the first casing 1 is longer than the length of the second casing 3, because the overall length Therefore, there is not only the disadvantage of lack of portability, but also the disadvantage of poor design performance

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