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    • 1. 发明授权
    • Polarization switching/variable directivity antenna
    • 极化开关/可变方向性天线
    • US07541999B2
    • 2009-06-02
    • US12059885
    • 2008-03-31
    • Akio MatsushitaTomoyasu Fujishima
    • Akio MatsushitaTomoyasu Fujishima
    • H01Q13/00
    • H01P1/165H01P1/161H01Q3/24H01Q13/10H01Q21/245
    • A polarization switching/variable directivity antenna according to the present invention includes a ground conductor plate 12 on a surface of a dielectric substrate 11, and has a radiation element 13, a directivity switching element 15, and polarization switching elements 16 provided on the ground conductor plate 12 side of the dielectric substrate 11. The radiation element 13 includes a first slot 17a formed by removing a loop-like portion from the ground conductor plate 12. The directivity switching element 15 includes a second slot 17b formed by removing a loop-like portion from the ground conductor plate 12 and directivity switching switches 18. The polarization switching elements 16 includes a third slot 17c formed by removing a linear-shaped portion from the ground conductor plate 12 and polarization switching switches 19a to 19d. Through control of the directivity switching switches 18, switching of a maximum gain direction of radiation directivity of the antenna is realized. Through control of the polarization switching switches 19a to 19d, switching of a rotation direction of a circularly polarized wave which is emitted from the antenna can be realized.
    • 根据本发明的偏振切换/可变方向性天线包括在电介质基板11的表面上的接地导体板12,并且具有辐射元件13,方向性开关元件15和设置在接地导体上的偏振开关元件16 电介质基板11的板12侧。辐射元件13包括通过从接地导体板12去除环状部而形成的第一槽17a。方向性切换元件15包括通过除去环状形成的第二槽17b 来自接地导体板12和方向性切换开关18.偏振切换元件16包括通过从接地导体板12和偏振切换开关19a至19d去除直线形部分而形成的第三槽17c。 通过控制方向性切换开关18,实现了天线的辐射方向性的最大增益方向的切换。 通过极化切换开关19a〜19d的控制,可以实现从天线发射的圆偏振波的旋转方向的切换。
    • 2. 发明授权
    • Variable slot antenna and driving method thereof
    • 可变槽天线及其驱动方法
    • US07538736B2
    • 2009-05-26
    • US12179059
    • 2008-07-24
    • Hiroshi KannoTomoyasu Fujishima
    • Hiroshi KannoTomoyasu Fujishima
    • H01Q13/10
    • H01Q13/10H01Q3/247
    • A variable slot antenna includes: ground conductors 101a and 101b, which are divided by a slot region 109 both of whose both ends are open ends 111a and 111b; a feed line 115 for feeding power to the slot region 109; a first selective conduction path 119 connecting between the ground conductors 101a and 101b in a direction of the open end 111a as viewed from a feeding site 113; and a second selective conduction path 121 connecting between the ground conductors 101a and 101b in a direction of the open end 111b as viewed from the feeding site 113. In a first driving state, the first selective conduction path 119 is allowed to conduct and the second selective conduction path 121 is left open, so that a main beam is emitted in a direction 123a of the second selective conduction path 121 as viewed from the feeding site 113. In another driving state, the selective conduction paths are controlled differently so that the main beam direction is switched to a direction 123b.
    • 可变缝隙天线包括:接地导体101a和101b,它们被两端都是开口端111a和111b的槽区域109分隔开; 用于向槽区域109供电的供给管线115; 从供电位置113观察,在接地导体101a和101b之间沿开放端111a的方向连接的第一选择性导电路径119; 以及从馈电位置113观察,在接地导体101a和101b之间沿开放端111b的方向连接的第二选择性导电路径121.在第一驱动状态下,允许第一选择性传导路径119导通, 选择性传导路径121保持打开,使得从馈电位置113观察,主光束在第二选择性传导路径121的方向123a上发射。在另一驱动状态下,选择性传导路径被不同地控制,使得主光束 光束方向切换到方向123b。
    • 3. 发明申请
    • VARIABLE SLOT ANTENNA AND DRIVING METHOD THEREOF
    • 可变槽天线及其驱动方法
    • US20080272972A1
    • 2008-11-06
    • US12179059
    • 2008-07-24
    • Hiroshi KANNOTomoyasu Fujishima
    • Hiroshi KANNOTomoyasu Fujishima
    • H01Q13/10
    • H01Q13/10H01Q3/247
    • A variable slot antenna includes: ground conductors 101a and 101b, which are divided by a slot region 109 both of whose both ends are open ends 111a and 111b; a feed line 115 for feeding power to the slot region 109; a first selective conduction path 119 connecting between the ground conductors 101a and 101b in a direction of the open end 111a as viewed from a feeding site 113; and a second selective conduction path 121 connecting between the ground conductors 101a and 101b in a direction of the open end 111b as viewed from the feeding site 113. In a first driving state, the first selective conduction path 119 is allowed to conduct and the second selective conduction path 121 is left open, so that a main beam is emitted in a direction 123a of the second selective conduction path 121 as viewed from the feeding site 113. In another driving state, the selective conduction paths are controlled differently so that the main beam direction is switched to a direction 123b.
    • 可变缝隙天线包括:接地导体101a和101b,其被两个端部为开口端111a和111b的槽区域109分隔开; 用于向槽区域109供电的供给管线115; 从供电位置113观察,在接地导体101a和101b之间沿开放端111a的方向连接的第一选择性导电路径119; 以及从馈电位置113观察,在接地导体101a和101b之间沿开放端111b的方向连接的第二选择性传导路径121。 在第一驱动状态下,允许第一选择性导电路径119导通,并且第二选择导电路径121保持断开,从而从第二驱动状态观察第二选择导电路径121的方向123a发射主波束 喂养地点113。 在另一个驱动状态下,不同地控制选择传导路径,使得主波束方向被切换到方向123b。
    • 5. 发明申请
    • Differential transmission line
    • 差动传输线
    • US20080116989A1
    • 2008-05-22
    • US11980616
    • 2007-10-31
    • Hiroshi KannoKazuyuki SakiyamaUshio SangawaTomoyasu Fujishima
    • Hiroshi KannoKazuyuki SakiyamaUshio SangawaTomoyasu Fujishima
    • H01P3/08
    • H01P3/081H05K1/0245H05K1/0253H05K2201/09272
    • A differential transmission line includes: a substrate; a ground conductor layer; and a first and a second signal conductor disposed in parallel to each other on the substrate. The first signal conductor and the ground conductor layer compose a first transmission line, whereas the second signal conductor and the ground conductor layer compose a second transmission line. The first transmission line and the second transmission line compose a differential transmission line. The differential transmission line includes a curved region, with a straight region being connected to each end of the curved region. In the ground conductor layer in the curved region, a plurality of slots orthogonal to a local transmission direction of signals in the curved region are formed, and the slots are connected to one another on the inner side of the curvature.
    • 差动传输线包括:基板; 接地导体层; 以及在基板上彼此平行设置的第一和第二信号导体。 第一信号导体和接地导体层构成第一传输线,而第二信号导体和接地导体层构成第二传输线。 第一传输线和第二传输线构成差动传输线。 差动传输线包括弯曲区域,直线区域连接到弯曲区域的每一端。 在弯曲区域的接地导体层中,形成与弯曲区域中的信号的局部传输方向正交的多个槽,并且在曲率的内侧上彼此连接。
    • 7. 发明授权
    • Slot antenna apparatus eliminating unstable radiation due to grounding structure
    • 插槽天线装置消除由接地结构导致的不稳定辐射
    • US07710338B2
    • 2010-05-04
    • US12113407
    • 2008-05-01
    • Tomoyasu FujishimaHiroshi Kanno
    • Tomoyasu FujishimaHiroshi Kanno
    • H01Q13/10
    • H01Q13/10H01Q1/243H01Q1/48
    • A slot antenna apparatus includes a grounding conductor having an outer edge including a first portion and a second portion, a one-end-opened slot formed in the grounding conductor along a radiation direction such that an open end is provided at a center of the first portion, a first feed line intersecting with the slot to feed radio-frequency signals, a second feed line connected to an external circuit, and a signal processing circuit including active elements and connected between the first and second feed lines and connected to the grounding conductor. The grounding conductor is configured to be symmetric about an axis parallel to the radiation direction and passing through the slot, and is provided with a grounding terminal on the axis of symmetry at the second portion. The grounding terminal is to be connected to a ground of the external circuit.
    • 缝隙天线装置包括具有包括第一部分和第二部分的外边缘的接地导体,沿着辐射方向形成在接地导体中的一端开口槽,使得开口端设置在第一部分和第二部分的中心 与狭缝相交的第一馈电线,用于馈送射频信号,连接到外部电路的第二馈电线,以及包括有源元件并连接在第一和第二馈电线之间并连接到接地导体的信号处理电路 。 接地导体被构造为围绕平行于辐射方向的轴对称并且穿过狭槽,并且在第二部分处在对称轴上设置有接地端子。 接地端子要连接到外部电路的地。
    • 8. 发明申请
    • WIDE-BAND SLOT ANTENNA APPARATUS WITH STOP BAND
    • 宽带天线装置与停止带
    • US20080284670A1
    • 2008-11-20
    • US12116754
    • 2008-05-07
    • Hiroshi KANNOTomoyasu Fujishima
    • Hiroshi KANNOTomoyasu Fujishima
    • H01Q13/10
    • H01Q13/106H01Q5/385H01Q5/50
    • A slot antenna apparatus includes a grounding conductor having an outer edge including a first portion facing a radiation direction and a second portion other than the first portion, a one-end-open feed slot formed in the grounding conductor along the radiation direction such that an open end is provided at a center of the first portion, and a feed line including a strip conductor close to the grounding conductor and intersecting with the feed slot at at least a part thereof to feed a radio frequency signal to the feed slot. The slot antenna apparatus further comprises at least one one-end-open parasitic slot having an electrical length equivalent to one-quarter effective wavelength in a certain stop band, the parasitic slot having an open end at the second portion, and being formed in the grounding conductor so as not to intersect with the feed line.
    • 缝隙天线装置包括:接地导体,其具有包括面向辐射方向的第一部分的外边缘和除了第一部分之外的第二部分;沿着辐射方向形成在接地导体中的一端开放进料槽, 开口端设置在第一部分的中心,以及馈送线,其包括靠近接地导体的带状导体,并在其至少一部分与馈送槽交叉,以将射频信号馈送到馈送槽。 缝隙天线装置还包括至少一个具有等于一定阻挡带中四分之一有效波长的电长度的一端开放寄生狭槽,该寄生狭缝在第二部分具有开口端,并形成在 接地导体,以便不与馈线相交。
    • 9. 发明授权
    • Transmission line apparatus having conductive strips coupled by at least one additional capacitance element
    • 具有通过至少一个附加电容元件耦合的导电条的传输线设备
    • US07403080B2
    • 2008-07-22
    • US11504722
    • 2006-08-16
    • Hiroshi KannoKazuyuki SakiyamaUshio SangawaTomoyasu Fujishima
    • Hiroshi KannoKazuyuki SakiyamaUshio SangawaTomoyasu Fujishima
    • H01P3/08
    • H01P1/201H01P1/203H05K1/0219H05K1/0237H05K2201/09236H05K2201/09781
    • A transmission line apparatus includes: a substrate 101 with a ground conductor plane; and first and second signal strips 102a, 102b supported on the substrate 101 in parallel with each other. The apparatus further includes at least one additional capacitance element 301 that connects the first and second signal strips 102a, 102b together. The element 301 includes: a first additional conductor 303 spaced from the first signal strip 102a; a second additional conductor 305 spaced from the second signal strip 102b; and a third additional conductor 307 connected to the first and second additional conductors 303, 305 at respective points. When measured in a signal transmission direction, the smallest width W3a of the third additional conductor 307 is shorter than the length L1 or L2 of the first or second additional conductor 303 or 305. And the additional capacitance element 301 has a resonant frequency that is higher than the frequency of a signal being transmitted.
    • 传输线装置包括:具有接地导体平面的基板101; 以及彼此平行地支撑在基板101上的第一和第二信号条102a,102b。 该装置还包括将第一和第二信号条带102a,102b连接在一起的至少一个附加电容元件301。 元件301包括:与第一信号条102a间隔开的第一附加导体303; 与第二信号条带102b间隔开的第二附加导体305; 以及在各个点处连接到第一和第二附加导体303,305的第三附加导体307。 当在信号传输方向上测量时,第三附加导体307的最小宽度W 3 a比第一或第二附加导体303或305的长度L 1或L 2短。 并且附加电容元件301具有高于正被发送的信号的频率的谐振频率。
    • 10. 发明授权
    • Antenna and method of making the same
    • 天线及其制作方法
    • US07250909B2
    • 2007-07-31
    • US11173049
    • 2005-07-01
    • Tomoyasu FujishimaKazuyuki SakiyamaUshio SangawaHiroshi Kanno
    • Tomoyasu FujishimaKazuyuki SakiyamaUshio SangawaHiroshi Kanno
    • H01Q1/38
    • H01Q1/38H01Q1/243H01Q1/48H01Q3/01H01Q9/0407
    • An antenna according to the present invention includes a dielectric layer 102 with an upper surface and a lower surface, a signal line strip 101 provided on the upper surface of the dielectric layer 102, and a grounding conductor portion 104 provided on the lower surface of the dielectric layer 102. The surface of the grounding conductor portion 104 includes a plurality of planar areas, each of which has a size that is shorter than the wavelength of an electromagnetic wave to transmit or receive. A distance from a virtual reference plane to each planar area is adjusted on an area-by-area basis. Thus, an antenna, which can change various antenna parameters such as radiation directivity, gain and efficiency dynamically and adaptively according to incessantly changing propagation environment of radio wave, is provided.
    • 根据本发明的天线包括具有上表面和下表面的电介质层102,设置在电介质层102的上表面上的信号线条101和设置在电介质层102的下表面上的接地导体部分104 电介质层102。 接地导体部分104的表面包括多个平面区域,每个平面区域的尺寸比要传送或接收的电磁波的波长短。 从虚拟参考平面到每个平面区域的距离在逐个区域的基础上进行调整。 因此,提供了可以根据不断变化的无线电波的传播环境动态适应地改变各种天线参数(诸如辐射方向性,增益和效率)的天线。