Communications: radio wave antennas – Antennas – With electrical shield
Reexamination Certificate
1998-04-09
2001-03-20
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
With electrical shield
C343S702000, C343S805000
Reexamination Certificate
active
06204825
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to the field of shielding printed circuit boards, and more particularly to a single shield and antenna apparatus for a printed circuit board.
BACKGROUND OF THE INVENTION
There are many applications in which it is desirable to be able to reduce the cost of construction and assembly of components and structures in electronic devices by combining the functions of multiple devices into a single structure. For example, in a hand-held portable computer, the display is often directly integrated directly into the computer housing. Thus, the hand-held computer may be made smaller, more portable and more rugged by having a single unit serving as the housing for the computer circuit boards and for the display.
In addition, it is often desirable to be able to reduce manufacturing costs by producing a single structure which simultaneously serves multiple functional purposes. For example, since an electromagnetic shielding device and an antenna must both be made of a material having a high conductivity (e.g., metal), economies of production may be realized by fabricating both the shield and the antenna from a single piece of material, thereby reducing the number of steps in required to be performed in the fabrication and assembly processes.
SUMMARY OF THE INVENTION
Accordingly, it is a goal of this invention to provide a hybrid shield and antenna for providing combination RF and electromagnetic shield and antenna apparatus.
The present invention is directed to a hybrid shielding and antenna apparatus. In one embodiment, the hybrid shield and antenna includes a shielding enclosure for providing RF and electromagnetic shielding of an electronic component, and an antenna disposed at an end of the central enclosure, wherein the antenna and the central enclosure comprise a single continuous unit.
The present invention is further directed to a shielding and radio-frequency radiator and receiver system. In one embodiment, the system includes a circuit board being generally planar and having an upper and a lower surface, the circuit board comprising a dielectric material for providing a mounting surface for an electronic component, a ground plane formed on the lower surface of the circuit board for approximating a conducting radio-frequency ground, and an enclosure disposed upon the upper surface of the circuit board and encompassing the electronic component for providing radio-frequency electromagnetic shielding of the electronic component, the enclosure having a portion thereof formed into an antenna for receiving and transmitting electromagnetic energy.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention and together with the general description, serve to explain the principles of the invention.
REFERENCES:
patent: 5428362 (1995-06-01), Chatzipetros et al.
patent: 5585806 (1996-12-01), Ogino et al.
patent: 5802458 (1998-09-01), Van Zeijl et al.
patent: 5819162 (1998-10-01), Spann et al.
patent: 5874920 (1999-02-01), Araki et al.
Ho Tan
Intermec IP Corp.
Suiter & Associates PC
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