Antenna array and unit cell using an artificial magnetic layer
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01Q-001/38
H01Q-015/02
H01Q-015/00
출원번호
US-0452752
(2006-06-13)
등록번호
US-7471247
(2008-12-30)
발명자
/ 주소
S��ily,Jussi
Kaunisto,Mikko
Tretyakov,Sergei
Simovski,Constantin
출원인 / 주소
Nokia Siemens Networks, Oy
대리인 / 주소
Harrington & Smith, PC
인용정보
피인용 횟수 :
97인용 특허 :
7
초록▼
An antenna array includes a plurality of antenna unit cells, a ground plane, and at least one artificial magnetic layer AML unit cell. At least one AML unit cell is disposed between at least two adjacent ones of the antenna unit cells. The AML unit cells include a pair of split ring resonators thro
An antenna array includes a plurality of antenna unit cells, a ground plane, and at least one artificial magnetic layer AML unit cell. At least one AML unit cell is disposed between at least two adjacent ones of the antenna unit cells. The AML unit cells include a pair of split ring resonators through a ring dielectric layer, and the resonators are capacitively coupled to the a ground plane of the antenna array through a capacitor dielectric layer. The resonators are orthogonal to one another and to the ground plane, and more than one pair may be defined in each AML unit cell. Magnetic energy from the antenna unit cells induces an electric field in the resonators, and the resulting magnetic field is strongly coupled to the AML unit cell to inhibit mutual coupling between radiating elements by suppression of surface wave propagation.
대표청구항▼
What is claimed is: 1. An antenna array comprising: a plurality of antenna unit cells disposed in an array and spaced from one another; each antenna unit cell comprising a radiating element and a ground plane element; and at least one artificial magnetic layer AML unit cell disposed between at leas
What is claimed is: 1. An antenna array comprising: a plurality of antenna unit cells disposed in an array and spaced from one another; each antenna unit cell comprising a radiating element and a ground plane element; and at least one artificial magnetic layer AML unit cell disposed between at least two adjacent ones of the antenna unit cells, said AML unit cell comprising at least one pair of split-ring resonators capacitively coupled to the ground plane elements of the adjacent antenna unit cells. 2. The antenna array of claim 1, wherein the AML unit cell comprises a capacitor dielectric layer coupled to a ring dielectric layer, and each of the split ring resonators comprise a pair of conductive vias penetrating the ring dielectric layer and coupled to one another by a conductive strip disposed along a surface of the ring dielectric layer opposite the capacitor dielectric layer. 3. The antenna array of claim 2, wherein each of the pair of split ring resonators are orthogonal to one another and orthogonal to the ground plane elements. 4. The antenna array of claim 2, wherein an array of AML unit cells are disposed between at least two of the adjacent antenna unit cells. 5. The antenna array of claim 4, wherein the array of AML unit cells are disposed in a tile that is removably coupled to the antenna array, and the array of AML unit cells comprises at least five AML unit cells. 6. The antenna array of claim 4, wherein an array of AML unit cells is disposed between each adjacent pair of the plurality of antenna unit cells. 7. The antenna array of claim 1, wherein the AML unit cell is substantially co-planar with the ground plane elements of the adjacent antenna unit cells. 8. An apparatus comprising: an array of unit cells disposed on a common substrate, each unit cell comprising: a first layer of dielectric material defining a first and an opposed second major surface; a second dielectric layer disposed adjacent to the first major surface; a pair of intersecting conductive traces disposed on the opposed major surface of the first layer of dielectric material; and at least four conductive vias penetrating the first layer of dielectric material but not the second layer of dielectric material, each of said conductive vias spaced from one another and coupled to a conductive trace. 9. The apparatus of claim 8, wherein the array comprises at least five of the unit cells disposed along a line. 10. The apparatus of claim 9, wherein the four conductive vias and the pair of conductive traces are disposed so as to form a pair of split ring resonators that are orthogonal to one another. 11. The apparatus of claim 9, wherein the pair of conductive traces comprises a first pair, and the four conductive vias comprise a first set of vias, the apparatus further comprising: an insulating layer disposed over the first pair of conductive traces; a second pair of conductive traces disposed over the insulating layer opposite the first pair of conductive traces; and a second set of at least four conductive vias penetrating the first layer of dielectric material and the insulating layer but not the second layer of dielectric material, each of said conductive vias of the second set spaced from one another and coupled to a conductive trace of the second pair. 12. The apparatus of claim 9, wherein the ring dielectric layer defines a thickness about 1.6 mm and the capacitor dielectric layer defines a thickness about 0.5 mm. 13. A method of making an antenna array comprising: providing a substrate particularly adapted to retain components in spaced relation to one another; securing to the substrate a plurality of antenna unit cells, each antenna unit cell spaced from each other antenna unit cell and each antenna unit cell comprising a ground plane element spaced from a radiating element; securing to the substrate, between each pair of adjacent antenna unit cells, a tile comprising an array of artificial magnetic layer AML unit cells, each AML unit cell comprising a ring dielectric layer having a first and a second surface, a capacitor dielectric layer coupled to the first surface, a pair of conductive traces disposed adjacent to the second surface, and a set of at least four conductive vias penetrating the ring dielectric layer but not the capacitor dielectric layer, each of said conductive vias spaced from one another and coupled to the pair of conductive traces; and capacitively coupling the AML unit cell to at least one of the ground plane elements. 14. The method of claim 13, wherein each tile comprises at least five AML unit cells disposed in a line between adjacent antenna unit cells. 15. The method of claim 13, wherein the tiles and the ground plane elements lie substantially in a same plane. 16. The method of claim 13, wherein the pair of conductive traces and the set of at least four conductive vias form two split ring resonators that are orthogonal to one another. 17. An arrayed apparatus comprising: a plurality of means for wirelessly communicating RF energy over a frequency, said means for wirelessly communicating arrayed in spaced relation to one another; a plurality of means for inhibiting mutual coupling, each means for inhibiting mutual coupling disposed between adjacent ones of the plurality of means for wirelessly communicating RF energy, each of said means for inhibiting mutual coupling comprising at least one split ring resonator; and conductive means for electrically coupling each of the plurality of means for inhibiting mutual coupling to one another; wherein the conductive means and each said means for inhibiting mutual coupling are disposed in a common ground plane. 18. The arrayed apparatus of claim 17, wherein: the means for wirelessly communicating RF energy over a frequency comprises a radiating element of an antenna unit cell; and the means for inhibiting mutual coupling comprises at least one AML unit cell, the AML unit cell comprising a ring dielectric layer coupled on one side to a capacitor dielectric layer and having disposed on an opposed side a conductive trace that is coupled to the capacitor dielectric layer by a set of conductive vias that penetrate the ring dielectric layer. 19. The arrayed apparatus of claim 17, wherein the conductive trace and the set of conductive vias form a first split ring resonator, the apparatus further comprising another split ring resonator disposed orthogonal to the first split ring resonator and both the first and second split ring resonators lie substantially perpendicular to the common ground plane.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Matsugatani,Kazuoki; Tanaka,Makoto; Kim,Dowon; Kim,Moonil, Antenna, radio device, method of designing antenna, and method of measuring operating frequency of antenna.
Leabman, Michael A.; Brewer, Gregory Scott, External or internal wireless power receiver with spaced-apart antenna elements for charging or powering mobile devices using wirelessly delivered power.
Bell, Douglas; Leabman, Michael, Method for automatically testing the operational status of a wireless power receiver in a wireless power transmission system.
Bell, Douglas; Leabman, Michael A., Method for automatically testing the operational status of a wireless power receiver in a wireless power transmission system.
Hosseini, Alister; Leabman, Michael A., Near field transmitters for wireless power charging of an electronic device by leaking RF energy through an aperture.
Hosseini, Alister; Leabman, Michael A., Near field transmitters for wireless power charging of an electronic device by leaking RF energy through an aperture offset from a patch antenna.
Hosseini, Alister; Leabman, Michael A., Near-field RF charging pad with adaptive loading to efficiently charge an electronic device at any position on the pad.
Hosseini, Alister; Leabman, Michael A., Near-field RF charging pad with multi-band antenna element with adaptive loading to efficiently charge an electronic device at any position on the pad.
Leabman, Michael A.; Brewer, Gregory Scott, System and methods for wireless power transmission to an electronic device in accordance with user-defined restrictions.
Bell, Douglas; Leabman, Michael A., Systems and methods for assigning a power receiver to individual power transmitters based on location of the power receiver.
Bell, Douglas; Leabman, Michael A., Systems and methods for assigning a set of antennas of a wireless power transmitter to a wireless power receiver based on a location of the wireless power receiver.
Bell, Douglas; Leabman, Michael, Systems and methods for controlling communications during wireless transmission of power using application programming interfaces.
Leabman, Michael A., Systems and methods for generating and transmitting wireless power transmission waves using antennas having a spacing that is selected by the transmitter.
Leabman, Michael, Systems and methods for identifying receivers in a transmission field by transmitting exploratory power waves towards different segments of a transmission field.
Leabman, Michael A.; Brewer, Gregory Scott, Systems and methods for maximizing wireless power transfer efficiency by instructing a user to change a receiver device's position.
Leabman, Michael A., Systems and methods for preconfiguring transmission devices for power wave transmissions based on location data of one or more receivers.
Bell, Douglas; Leabman, Michael A., Systems and methods for real or near real time wireless communications between a wireless power transmitter and a wireless power receiver.
Bell, Douglas; Leabman, Michael A., Systems and methods for real time or near real time wireless communications between a wireless power transmitter and a wireless power receiver.
Leabman, Michael A.; Brewer, Gregory Scott, Systems and methods for using a predetermined number of communication channels of a wireless power transmitter to communicate with different wireless power receivers.
Bell, Douglas; Leabman, Michael, Systems and methods for using a transmitter access policy at a network service to determine whether to provide power to wireless power receivers in a wireless power network.
Bell, Douglas; Leabman, Michael, Systems and methods for using application programming interfaces to control communications between a transmitter and a receiver.
Leabman, Michael A.; Brewer, Gregory Scott, Systems and methods for wireless power transmission by modifying a number of antenna elements used to transmit power waves to a receiver.
Leabman, Michael A.; Brewer, Gregory Scott, Systems and methods of transmitting power transmission waves based on signals received at first and second subsets of a transmitter's antenna array.
Hosseini, Alister; Leabman, Michael A., Systems, methods, and devices for using a battery as a antenna for receiving wirelessly delivered power from radio frequency power waves.
Leabman, Michael A.; Brewer, Gregory Scott, Wireless power receivers that communicate status data indicating wireless power transmission effectiveness with a transmitter using a built-in communications component of a mobile device, and methods of use thereof.
Leabman, Michael A.; Brewer, Gregory Scott, Wireless power transmitters for transmitting wireless power and tracking whether wireless power receivers are within authorized locations.
Leabman, Michael A.; Brewer, Gregory Scott, Wireless power transmitters that transmit at determined times based on power availability and consumption at a receiving mobile device.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.