公开(公告)号：US20030201940A1

公开(公告)日：2003-10-30

申请号：US10288256

申请日：2002-11-04

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  William R. Palmer ,  Griffin K. Gothard ,  Christopher A. Snyder

IPC: H01Q001/38 ,  H01Q001/08

CPC classification number: H01Q1/08 ,  H01Q1/084 ,  H01Q1/085 ,  H01Q1/241 ,  H01Q1/242 ,  H01Q1/38 ,  H01Q3/01 ,  H01Q3/20 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q19/32 ,  H01Q21/061 ,  H01Q21/20

Abstract: An antenna array formed on a deformable dielectric material or substrate includes a center element and plurality of radial elements extending from a center hub. In the operative mode, the radial elements are folded upwardly into an approximately vertical position, with the center element at the center of the hub and the radial elements circumferentially surrounding the center element. In one embodiment the center element serves an active element of the antenna array and the radial elements are controllable in a directive or reflective state to effect a directive beam pattern from the antenna array. When not in use, the antenna elements are deformed into a plane and can therefore be integrated into a housing for compact storage. In a phased array embodiment, the center element is absent and the plurality of radial elements, are controllable to steer the antenna beam.

Abstract translation: 形成在可变形电介质材料或衬底上的天线阵列包括中心元件和从中心毂延伸的多个径向元件。 在操作模式中，径向元件向上折叠成大致垂直的位置，中心元件位于毂的中心，而径向元件周向围绕中心元件。 在一个实施例中，中心元件用于天线阵列的有源元件，并且径向元件可以以指示或反射状态控制，以实现来自天线阵列的指向波束图案。 当不使用时，天线元件变形成平面，因此可以集成到壳体中以进行紧凑的存储。 在相控阵实施例中，中心元件不存在并且多个径向元件是可控的以引导天线波束。

公开(公告)号：US20030184492A1

公开(公告)日：2003-10-02

申请号：US10292384

申请日：2002-11-08

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  Michael J. Lynch ,  Griffin K. Gothard

IPC: H01Q019/00 ,  H01Q019/10

CPC classification number: H01Q1/2275 ,  H01Q1/22 ,  H01Q1/2258 ,  H01Q3/242 ,  H01Q3/446 ,  H01Q5/357 ,  H01Q19/108 ,  H01Q19/30 ,  H01Q19/32 ,  H01Q21/205 ,  H01Q21/30

Abstract: A directive antenna operable in multiple frequency bands includes an active antenna element and at least one passive antenna element parasitically coupled to the active antenna element. The passive antenna element(s) have length and spacing substantially optimized to operate at (i) a fundamental frequency associated with the active antenna element and (ii) a higher resonant frequency related to the fundamental frequency. Spatial-harmonic current-distributions of the passive antenna elements are used to create the multiple frequency bands of operation. The directive antenna also includes devices operatively coupled to the passive antenna element(s) to steer an antenna beam formed by applying a signal at the fundamental resonant frequency, higher resonant frequency, or both to the active antenna element to operate in the multiple frequency bands.

Abstract translation: 可在多个频带中操作的指示天线包括有源天线元件和至少一个与有源天线元件寄生耦合的无源天线元件。 无源天线元件具有基本优化的长度和间隔，以在（i）与有源天线元件相关联的基频和（ii）与基频有关的较高谐振频率下工作。 无源天线元件的空间谐波电流分布用于创建多个频带的操作。 指导天线还包括可操作地耦合到无源天线元件的装置，以引导通过将基频谐振频率，较高谐振频率或两者的信号施加到有源天线元件而形成的天线波束，以在多个频带 。

公开(公告)号：US20020036586A1

公开(公告)日：2002-03-28

申请号：US09847065

申请日：2001-05-01

Applicant: Tantivy Communications, Inc.

Inventor： Griffin K. Gothard ,  Bing Chiang ,  James A. Proctor JR. ,  Kenneth M. Gainey ,  Joe T. Richeson

IPC: H01Q003/02

CPC classification number: H01Q21/205 ,  H01Q3/242 ,  H01Q19/32

Abstract: A directive antenna includes plural antenna elements in an antenna assemblage. A feed network connected to the antenna elements includes at least one switch to select a state of at least one of the antenna elements to be in an active state in response to a control signal. The other antenna elements are in a passive state, electrically coupled to an impedance to be in a reflective mode. The antenna elements in the passive state are electromagnetically coupled to the active antenna element, allowing the antenna assemblage to directionally transmit and receive signals. The directive antenna may further include an assisting switch associated with each antenna element to assist coupling the antenna elements, while in the passive state, to the respective impedances. The antenna assemblage may be circular for a 360null discrete scan in 2N directions, where N is the number of antenna elements. The directive antenna is suitable for use in a high data rate network having greater than 50 kbits per second data transfer rates, where the high data rate network may use CDMA2000, 1eV-DO, 1Extreme, or other such Protocol.

Abstract translation: 指示天线包括天线组合中的多个天线元件。 连接到天线元件的馈电网络包括至少一个开关，用于响应于控制信号选择至少一个天线元件处于活动状态的状态。 其他天线元件处于被动状态，电耦合到处于反射模式的阻抗。 处于被动状态的天线元件与有源天线元件电磁耦合，允许天线组件定向发射和接收信号。 指示天线还可以包括与每个天线元件相关联的辅助开关，以帮助天线元件在被动状态下耦合到相应的阻抗。 天线组合可以是圆形的，用于在2N个方向上的360°离散扫描，其中N是天线元件的数量。 该指令天线适用于具有大于50kbits /秒数据传输速率的高数据速率网络，其中高数据速率网络可以使用CDMA2000,1eV-DO，1Extreme或其他此类协议。

公开(公告)号：US20040150569A1

公开(公告)日：2004-08-05

申请号：US10386393

申请日：2003-03-10

Applicant: Tantivy Communications, Inc.

Inventor： James A. Proctor, Jr. ,  Bing Chiang

IPC: H01Q001/24

CPC classification number: H01Q1/243 ,  H01Q1/242 ,  H01Q1/245 ,  H01Q1/38 ,  H01Q1/521 ,  H01Q3/2605 ,  H01Q3/44 ,  H01Q9/30 ,  H01Q9/42 ,  H01Q19/32 ,  H01Q21/24 ,  H01Q25/001 ,  H01Q25/002 ,  H04B7/10

Abstract: An adaptive antenna used in a receive only mode with a separate omnidirectional transmit antenna. The arrangement is especially effective for small, handheld wireless devices. The transmit antenna maybe integrated with the receive array by utilizing a horizontally polarized transmit and vertically polarized receiver ray. In other embodiments, the transmit antenna may be physically separate and not integrated with the receive array. In either case there is separate receive and transmit signal port as an interface to radio transceiver equipment. The use of an adaptive antenna in the receive only direction has the potential to increase forward links capacity to levels equal to or greater than reverse link capacity. This allows for a significant increase in the overall number of users that may be active at the same time in a wireless system.

Abstract translation: 在仅接收模式中使用的具有单独的全向发射天线的自适应天线。 该安排对于小型手持无线设备特别有效。 发射天线可以通过利用水平极化的发射和垂直极化的接收机射线与接收阵列集成。 在其他实施例中，发射天线可以是物理上分离的并且不与接收阵列集成。 在任一种情况下，都有单独的接收和发送信号端口作为无线电收发器设备的接口。 在接收方向上使用自适应天线具有将前向链路容量增加到等于或大于反向链路容量的电平的潜力。 这允许在无线系统中可以同时活动的用户的总数量的显着增加。

公开(公告)号：US20030146880A1

公开(公告)日：2003-08-07

申请号：US10234036

申请日：2002-08-30

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor JR.

IPC: H01Q021/00 ,  H01Q001/50

CPC classification number: H01Q1/246 ,  H01Q3/26 ,  H01Q3/36 ,  H01Q3/46 ,  H01Q21/0018 ,  H01Q21/30 ,  H01Q25/00 ,  H04B7/0617 ,  H04B7/086

Abstract: A directive antenna having plural antenna elements is arranged in a parasitic antenna array. Frequency selective components are connected to a first subset of the antenna elements. Weighting structures are connected to a second subset of the antenna elements. The first and second subsets of antenna elements may be connected by a space-fed power distribution system to produce independently steerable beams having spectrally separated signals.

Abstract translation: 具有多个天线元件的定向天线布置在寄生天线阵列中。 频率选择分量连接到天线元件的第一子集。 加权结构连接到天线元件的第二子集。 天线元件的第一和第二子集可以通过空间馈电的配电系统连接，以产生具有光谱分离信号的独立的可导向的光束。

公开(公告)号：US20020101301A1

公开(公告)日：2002-08-01

申请号：US09774534

申请日：2001-01-31

Applicant: Tantivy Communications, Inc.

Inventor： Bing Chiang ,  James A. Proctor JR. ,  Kenneth M. Gainey

IPC: H01P001/18

CPC classification number: H01P1/185

Abstract: A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a four port coupler arrangement that imbeds a quarter wave impedance transformation between the input port and the quadrature ports as well as between the quadrature ports and the output port. The characteristic impedance across the quadrature ports is therefore less than the characteristic impedance across the input and output ports. In one implementation, reducing a characteristic input/output impedance of 50 to a 20 ohm quadrature port impedance results in a phase shift range increase of more than 50%.

Abstract translation: 基于变容二极管的移相器，使用正交端口之间的较低特性阻抗比在其输入/输出端口使用的相位移范围更大。 该电路利用四端口耦合器布置，其在输入端口和正交端口之间以及正交端口和输出端口之间嵌入四分之一波阻抗变换。 因此，正交端口之间的特性阻抗小于输入和输出端口上的特性阻抗。 在一个实现中，将特性输入/输出阻抗降低到20欧姆正交端口阻抗导致相移范围增加超过50％。