Waveguide structure and printed-circuit board
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01P-005/12
H01P-003/02
H01P-001/20
H01P-003/08
H01P-005/02
H01P-007/08
H01Q-009/04
H05K-001/02
H01P-001/201
H01P-003/00
H05K-001/16
H05K-003/46
출원번호
US-0312971
(2014-06-24)
등록번호
US-9634370
(2017-04-25)
우선권정보
JP-2008-164338 (2008-06-24)
발명자
/ 주소
Toyao, Hiroshi
출원인 / 주소
NEC CORPORATION
대리인 / 주소
McGinn IP Law Group, PLLC
인용정보
피인용 횟수 :
1인용 특허 :
11
초록▼
A waveguide structure or a printed-circuit board is formed using a plurality of unit structures which are repetitively aligned in a one-dimensional manner or in a two-dimensional manner. The unit structure includes first and second conductive planes which are disposed in parallel with each other, a
A waveguide structure or a printed-circuit board is formed using a plurality of unit structures which are repetitively aligned in a one-dimensional manner or in a two-dimensional manner. The unit structure includes first and second conductive planes which are disposed in parallel with each other, a transmission line having an open end which is formed in a layer different from the first and second conductive planes and positioned to face the second conductive plane, and a conductive via electrically connecting the transmission line to the first conductive plane.
대표청구항▼
1. A waveguide structure, comprising: a first conductive plane formed as a predetermined area;a second conductive plane formed in parallel with the first conductive plane; anda plurality of unit structures, each of which includes: a transmission line having a first end serving as an open end and a s
1. A waveguide structure, comprising: a first conductive plane formed as a predetermined area;a second conductive plane formed in parallel with the first conductive plane; anda plurality of unit structures, each of which includes: a transmission line having a first end serving as an open end and a second end, the transmission line having a thin and elongated shape being formed in a different layer than the first conductive plane and the second conductive plane and being positioned relatively close to the second conductive plane; anda conductive via electrically connecting the second end of the transmission line to the first conductive plane,wherein the unit structures are repetitively aligned in a one-dimensional manner or in a two-dimensional manner over the predetermined area, andwherein a distance between the transmission line and the second conductive plane is smaller than a distance between the transmission line and the first conductive plane. 2. The waveguide structure according to claim 1, the transmission line having a straight, curved, or polygonal shape that is coupled with the conductive via, thereby forming a microstrip line that uses the second conductive plane as a return path. 3. The waveguide structure according to claim 2, wherein at least a majority of a plurality of the transmission lines included in the plurality of unit structures have a straight-linear shape which is elongated in a plan view and inclined to a reference line connecting between a plurality of conductive vias included in the plurality of unit structures, which are positioned adjacent to each other, at a prescribed angle. 4. The waveguide structure according to claim 2, wherein substantially all of the unit structures each comprises a transmission line having the thin-and-elongated shape with a single portion, as configured to be oriented in a common single direction. 5. The waveguide structure according to claim 4, as configured so that a length of the thin shape serves as a design parameter for controlling a band gap of the waveguide structure without changing an area of the thin shape. 6. The waveguide structure according to claim 1, wherein the transmission line is positioned to face the second conductive plane outside a region interposed between the first and second conductive planes, and wherein a clearance is formed at a prescribed position proximate to the conductive via in the second conductive plane, thus electrically isolating the second conductive plane from the conductive via. 7. The waveguide structure according to claim 6, wherein the transmission line is covered with a dielectric layer. 8. The waveguide structure according to claim 1, wherein the transmission line is formed inside a region circumscribed between the first conductive plane and the second conductive plane. 9. The waveguide structure according to claim 1, wherein the transmission line comprises a first transmission line located inside a region circumscribed between the first conductive plane and the second conductive plane, and wherein the conductive via comprises a first conductive via, the waveguide structure further comprising: a second transmission line having an open end laid on a second plane, which is positioned to face the second conductive plane outside the region circumscribed between the first and second conductive planes; anda second conductive via electrically connecting the first transmission line to the second transmission line,wherein a clearance is formed at a prescribed position corresponding to the second conductive via in the second conductive plane, which is thus electrically isolated from the second conductive via. 10. The waveguide structure according to claim 9, wherein each of the first transmission line coupled with the first conductive via and the second transmission line coupled with the second conductive via forms a microstrip line using the second conductive plane as a return path, and wherein each transmission line has one open end and the other end connected to its conductive via. 11. The waveguide structure according to claim 1, wherein the transmission line comprises a first transmission line located inside a region circumscribed between the first conductive plane and the second conductive plane, and wherein the conductive via comprises a first conductive via, the waveguide structure further comprising: a second transmission line having an open end laid on a second plane, which is positioned to face the second conductive plane inside the region circumscribed between the first and second conductive planes; anda second conductive via electrically connecting the second transmission line to the second conductive plane. 12. The waveguide structure according to claim 1, wherein the transmission line included in at least one of the plurality of unit structures has a spiral shape in which the first end of the transmission line is spirally wound about the second end of the transmission line positionally matching the conductive via in a plan view. 13. The waveguide structure according to claim 1, wherein the transmission line included in at least one of the plurality of units structures has a meandering shape in which the first end of the transmission line is meandered from the second end of the transmission line positionally matching the conductive via in a plan view. 14. The waveguide structure according to claim 1, as comprising an electromagnetic band-gap (EBG) structure designed to suppress electromagnetic waves from propagating in a specific frequency band. 15. The waveguide structure according to claim 1, as implemented on a printed-circuit board. 16. The waveguide structure according to claim 15, wherein the waveguide structure on the printed-circuit board comprises a first waveguide structure in a first predetermined area on the printed-circuit board, and wherein the printed-circuit board further includes a second waveguide structure in a second predetermined area of the printed-circuit board, the first and second waveguide structures configured to have two different band gaps. 17. The waveguide structure according to claim 1, wherein the transmission line is disposed outside a first dielectric layer formed between the first conductive plane and the second conductive plane, wherein a second dielectric layer and wherein a thickness of the second dielectric layer is smaller than a thickness of the first dielectric layer.
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이 특허에 인용된 특허 (11)
Toyao, Hiroshi; Ando, Noriaki, Antenna and printed-circuit board using waveguide structure.
McKinzie, III,William E.; Rogers,Shawn D., Circuit and method for suppression of electromagnetic coupling and switching noise in multilayer printed circuit boards.
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