IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0710867
(2007-02-26)
|
등록번호 |
US-7701395
(2010-05-20)
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발명자
/ 주소 |
- Alvey, Graham R.
- Bernhard, Jennifer T.
|
출원인 / 주소 |
- The Board of Trustees of the University of Illinois
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
25 |
초록
▼
A wireless communication device includes multiple antennas spaced apart from each other. Also included is a dielectric substrate with electrically conductive ground areas along the substrate opposite the antennas. Signal coupling is decreased between the antennas by connecting the ground areas toget
A wireless communication device includes multiple antennas spaced apart from each other. Also included is a dielectric substrate with electrically conductive ground areas along the substrate opposite the antennas. Signal coupling is decreased between the antennas by connecting the ground areas together with an isolation structure. In one nonlimiting form, this structure includes an electrically conductive meander line structure.
대표청구항
▼
What is claimed is: 1. An apparatus comprising a wireless communication device including: a dielectric substrate with a first side opposite a second side; two or more antenna elements spaced apart from one another along the first side of the substrate; and an electrical ground region carried on the
What is claimed is: 1. An apparatus comprising a wireless communication device including: a dielectric substrate with a first side opposite a second side; two or more antenna elements spaced apart from one another along the first side of the substrate; and an electrical ground region carried on the second side of the substrate, the electrical ground region including a first electrically conductive area opposite a first one of the antenna elements, a second electrically conductive area opposite a second one of the antenna elements, and an electrically conductive meander line structure interconnecting the first area and the second area, the meander line structure extending along the second side of the substrate opposite a portion of the first side positioned between the first one of the antenna elements and the second one of the antenna elements. 2. The apparatus of claim 1, wherein: the antenna elements each correspond to a patch antenna coupled to the first side of the substrate; the electrical ground region is generally planar; and the first area, the second area and the meander line structure are defined by a layer of electrically conductive material. 3. The apparatus of claim 1, wherein the meander line structure includes a number of legs defining a pathway with a number of turns and the meander line structure includes a number of dielectric voids in the ground region to separate the legs from one another. 4. The apparatus of claim 3, wherein the legs define a number of switchbacks and the meander line structure is one of a number of meander line portions of the ground region coupled to the first area and the second area to provide electrical continuity therewith. 5. The apparatus of claim 1, further comprising means for communicating with signals of a selected wavelength through the antenna elements, the meander line structure being sized to correspond to approximately one half of the wavelength. 6. The apparatus of claim 1, wherein the meander line structure is one of a number of meander lines electrically connected to the first area and the second area, the meander lines each corresponding to a boustrophedonic pathway with a plurality of elongate elements interdigitated with a plurality of slots. 7. A method, comprising: operating a wireless communication device including a first antenna, a second antenna spaced apart from the first antenna, and a dielectric substrate, the substrate including a first electrically conductive ground area along the substrate opposite the first antenna and a second electrically conductive ground area along the substrate opposite the second antenna; and suppressing signal coupling between the first antenna and the second antenna by connecting the first area and the second area to an electrical ground structure to provide electrical continuity therewith, the structure extending along the substrate opposite a region between the first antenna and the second antenna, the structure defining a meander line with multiple legs. 8. The method of claim 7, which includes separating the legs of the meander line from one to the next with a corresponding dielectric slot. 9. The method of claim 7, which includes connecting several meander line structures coupled to the first area and the second area. 10. The method of claim 7, which includes sizing the legs relative to a communication signal wavelength. 11. The method of claim 7, which includes providing each of the first antenna and the second antenna as a patch type. 12. The method of claim 7, which includes forming the first area, the second area, and the structure with a layer of electrically conductive material deposited on the substrate. 13. A method, comprising: providing a dielectric substrate for an electronic device; defining an electrical ground region on a first side of the dielectric substrate with a first contiguous area and a second contiguous area; defining a number of dielectric slots along the first side of the substrate between the first area and the second area, the slots being separated from one to the next by a corresponding electrically conductive, grounded pathway in electrical continuity with the first area and the second area; and positioning the slots and the corresponding grounded pathway to suppress surface wave coupling between the first area and the second area. 14. The method of claim 13, which includes defining a first antenna on a second side of the substrate opposite the first area and a second antenna on the second side of the substrate opposite the second area. 15. The method of claim 14, wherein the positioning includes placing the slots opposite an area along the second side of the substrate between the first antenna and the second antenna. 16. The method of claim 13, which includes providing the corresponding grounded pathway with a meander line shape including a number of legs, the legs defining at least a portion of the slots. 17. The method of claim 13, which includes providing a number of meander line structures to electromagnetically couple the first area and the second area, the electrically conductive pathway corresponding to one of the meander line structures. 18. The method of claim 13, wherein the defining of the electrical ground region includes depositing an electrically conductive layer on the first side of the substrate, and the defining of the slots includes providing a number of voids in the layer, the voids each corresponding to a respective one of the slots. 19. An apparatus comprising: a wireless communication device including: a dielectric substrate; an electrical ground region defined on a first side of the substrate, the ground region defining a first contiguous electrically conductive area, a second contiguous electrically conductive area, and a number of spaced apart electrical ground interconnecting portions to decrease coupling of surface waves traveling along the substrate, each respective one of the portions including: an electrical connection to the first area and an electrical connection to the second area to provide electrical continuity therewith; several connected legs to define a pathway with a number of tums between the first area and the second area; and a number of dielectric voids in the ground region to separate the legs from one to the next. 20. The apparatus of claim 19, further comprising a first antenna opposite the first area and a second antenna opposite the second area. 21. The apparatus of claim 20, further comprising means for receiving and transmitting signals through the first antenna and the second antenna. 22. The apparatus of claim 20, wherein the first antenna and the second antenna are each of a patch type carried on a second side of the substrate. 23. The apparatus of claim 19, wherein the pathway corresponds to a meander line. 24. The apparatus of claim 19, wherein the legs are each sized relative to approximately one half of a communication signal wavelength. 25. The apparatus of claim 19, wherein the ground region is comprised of an electrically conductive layer connected to the first side of the substrate.
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