公开(公告)号：US20060063528A1

公开(公告)日：2006-03-23

申请号：US11259913

申请日：2005-10-27

申请人： Sudhakar Rao ,  David Bressler ,  Arun Bhattacharyya

发明人： Sudhakar Rao ,  David Bressler ,  Arun Bhattacharyya

IPC分类号： H04B7/185

CPC分类号： H01Q13/0208 ,  H01Q1/288 ,  H01Q5/55 ,  H01Q19/13 ,  H01Q25/04

摘要： A dual-band multiple beam antenna system for a communications satellite sharing a set of reflector antennas for the transmit and receive frequencies. One set of reflectors is common to both the downlink and uplink frequencies. The feed horns are diplexed and exhibit frequency-dependent radiation patterns that separate the phase centers over the downlink and uplink frequency bands to obtain dual-band performance. The focal point of the reflector is in close proximity to the phase center corresponding to the downlink frequency band. The phase center for the uplink frequency band is spaced a predetermined distance from the phase center of the downlink frequency band. According to the present invention, the uplink frequencies are defocused and the downlink frequencies are focused thereby creating identical radiation patterns at both frequency bands and over the coverage region of the communications satellite.

公开(公告)号：US20060033671A1

公开(公告)日：2006-02-16

申请号：US10917986

申请日：2004-08-11

申请人： Steven Chan ,  Te Wu ,  Arun Bhattacharyya ,  Juan Rivera ,  Phillip Metzen

发明人： Steven Chan ,  Te Wu ,  Arun Bhattacharyya ,  Juan Rivera ,  Phillip Metzen

IPC分类号： H01Q13/12

CPC分类号： H01Q13/106 ,  H01Q21/0087 ,  H01Q21/0093 ,  H01Q21/064

摘要： A phased array antenna structure capable of operation at millimeter-wave frequencies and having multiple ring slot radiator elements (10). The RF feed structure for each radiator element includes a feed via (28) extending part-way through a multi-layer structure (FIG. 3) on which the radiator elements (10) are formed and a strip line feed probe (30) extending from the via (28) toward the radiator element. A key feature facilitating high-frequency operation is the inclusion of multiple mode suppressors (32) surrounding the via (28) and providing a smooth transition from a coaxial mode of RF transmission to a strip line mode of RF transmission. The feed probe (30) is tailored to provide either a narrow-band or a wideband frequency characteristic.

摘要翻译： 一种相位阵列天线结构，其能够在毫米波频率下操作并具有多个环形槽辐射体元件（10）。 每个散热器元件的RF馈送结构包括一个穿过形成有散热器元件（10）的多层结构（图3）的馈通通道（28），以及一条延伸 从通路（28）朝向散热器元件。 促进高频操作的关键特征是包括围绕通孔（28）的多个模式抑制器（32）并且提供从RF传输的同轴模式到RF传输的带状线路模式的平滑过渡。 馈送探针（30）被定制以提供窄带或宽带频率特性。

公开(公告)号：US06967627B2

公开(公告)日：2005-11-22

申请号：US10676763

申请日：2003-10-01

申请人： Arun Bhattacharyya ,  Daniel H. Roper

发明人： Arun Bhattacharyya ,  Daniel H. Roper

IPC分类号： H01Q5/00 ,  H01Q5/30 ,  H01Q13/02

CPC分类号： H01Q13/025 ,  H01Q5/30

摘要： A multiple mode feed horn is provided for transmitting and receiving signals. The feed horn includes a transverse electric throat section, a transverse electric profile section, and a transverse electric aperture section. The transverse electric profile section propagates a first transverse electric (TE) mode. The transverse electric aperture section propagates a second TE mode. The multiple mode feed horn prevents propagation of traverse magnetic modes from said throat section to said aperture section.

摘要翻译： 提供多模馈送喇叭用于发送和接收信号。 馈电喇叭包括横向电喉部分，横向电气剖面部分和横向电气孔径部分。 横向电气剖面部分传播第一横向电（TE）模式。 横向电孔径部分传播第二TE模式。 多模式进给喇叭防止横动磁模从所述喉部传播到所述孔部分。

公开(公告)号：US07110716B2

公开(公告)日：2006-09-19

申请号：US10060822

申请日：2002-01-30

申请人： Sudhakar K. Rao ,  David Bressler ,  Arun Bhattacharyya

发明人： Sudhakar K. Rao ,  David Bressler ,  Arun Bhattacharyya

IPC分类号： H04B7/185

CPC分类号： H01Q13/0208 ,  H01Q1/288 ,  H01Q5/55 ,  H01Q19/13 ,  H01Q25/04

摘要： A dual-band multiple beam antenna system for a communications satellite sharing a set of reflector antennas for the transmit and receive frequencies. One set of reflectors is common to both the downlink and uplink frequencies. The feed horns are diplexed and exhibit frequency-dependent radiation patterns that separate the phase centers over the downlink and uplink frequency bands to obtain dual-band performance. The focal point of the reflector is in close proximity to the phase center corresponding to the downlink frequency band. The phase center for the uplink frequency band is spaced a predetermined distance from the phase center of the downlink frequency band. According to the present invention, the uplink frequencies are defocused and the downlink frequencies are focused thereby creating identical radiation patterns at both frequency bands and over the coverage region of the communications satellite.

公开(公告)号：US20060119528A1

公开(公告)日：2006-06-08

申请号：US11003901

申请日：2004-12-03

申请人： Arun Bhattacharyya ,  James Sor

发明人： Arun Bhattacharyya ,  James Sor

IPC分类号： H01Q13/00

CPC分类号： H01Q13/025

摘要： An antenna horn having multiple flared sections with their slopes and lengths selected to enhance desirable electromagnetic modes and to suppress undesirable modes at the horn aperture, thereby increasing the aperture efficiency and antenna gain.

摘要翻译： 天线喇叭具有多个喇叭形部分，其斜坡和长度被选择以增强期望的电磁模式并且抑制喇叭孔径处的不期望的模式，由此增加孔径效率和天线增益。

公开(公告)号：US06549166B2

公开(公告)日：2003-04-15

申请号：US09935471

申请日：2001-08-22

申请人： Arun Bhattacharyya ,  Alan Cha ,  James McKay

发明人： Arun Bhattacharyya ,  Alan Cha ,  James McKay

IPC分类号： H01Q138

CPC分类号： H01Q21/065 ,  H01Q9/0435 ,  H01Q9/0457

摘要： A patch antenna is disclosed having four ports for circular polarization that suppress the TM-02 mode, resulting in a radiation pattern that is symmetric. The axial ratio performance is consequently superior to that of two-port patch antennas. A four-port patch antenna includes a patch made of an electrically conductive material, a patch substrate coupled to the patch wherein the patch substrate is made of a dielectric material, a ground plane coupled to the patch substrate wherein the ground plane is made of an electrically conductive material having at least four slots formed therein, a feed substrate coupled to the ground plane wherein the feed substrate is made of a dielectric material, and a hybrid network coupled to the feed substrate that includes a right hand circularly polarized port, a left hand circularly polarized port, and two matched terminated ports.

摘要翻译： 公开了一种贴片天线，其具有用于圆偏振的四个端口，其抑制TM-02模式，导致对称的辐射图。 因此，轴比性能优于双端口贴片天线。 四端口贴片天线包括由导电材料制成的贴片，耦合到贴片的贴片衬底，其中贴片衬底由电介质材料制成，接地平面耦合到贴片衬底，其中接地面由 具有形成在其中的至少四个槽的导电材料，耦合到接地平面的进料基板，其中进料基板由介电材料制成，以及耦合到馈电基板的混合网络，其包括右手圆极化端口，左 手圆极化端口和两个匹配的终端端口。

公开(公告)号：US06535174B2

公开(公告)日：2003-03-18

申请号：US09467637

申请日：1999-12-20

申请人： Sudhakar Rao ,  Arun Bhattacharyya

发明人： Sudhakar Rao ,  Arun Bhattacharyya

IPC分类号： H01Q1300

CPC分类号： H01Q25/04 ,  H01Q13/025

摘要： An antenna apparatus that has an increased efficiency, and a method for increasing the efficiency of multi-mode antenna feed horns, is disclosed. The method comprises the steps of exciting, within the antenna, a desired transmission mode and an undesired transmission mode of the signal to be transmitted, and converting, within the antenna, power within the undesired transmission mode into power for the desired transmission mode of the signal to be transmitted. An antenna apparatus in accordance with the present invention comprises a feed horn having an input opening, an aperture, and a cavity, disposed between the input opening and the aperture, for suppressing an undesired transmission mode of the antenna and exciting a desired transmission mode of the antenna.

摘要翻译： 公开了一种提高效率的天线装置和提高多模式天线馈电喇叭的效率的方法。 该方法包括以下步骤：在天线内激发要发送的信号的期望的传输模式和不期望的传输模式，并且在天线内将在不期望的传输模式内的功率转换成用于所需传输模式的功率 要发送的信号。 根据本发明的天线装置包括一个馈电喇叭，其具有设置在输入开口和孔之间的输入开口，孔径和空腔，用于抑制天线的不期望的传输模式并激发所需的传输模式 天线。

公开(公告)号：US06388620B1

公开(公告)日：2002-05-14

申请号：US09593182

申请日：2000-06-13

申请人： Arun Bhattacharyya

发明人： Arun Bhattacharyya

IPC分类号： H01Q138

CPC分类号： H01Q21/065 ,  H01Q1/288 ,  H01Q3/46 ,  H01Q9/0457

摘要： An antenna element, an antenna system, and a method for producing a signal using slot-coupled antenna elements are disclosed. The antenna element comprises an electrically conductive strip, a patch element, overlaying the electrically conductive strip, and a ground plane. The ground plane is coupled between the patch element and the electrically conductive strip and comprises an opening, at least a portion of the opening overlapping with at least a portion of the electrically conductive strip, wherein the opening and the electrically conductive strip can reflect incident radio frequency (RF) energy in a desired radiation pattern. A method in accordance with the present invention comprises illuminating a reflector with an RF signal emanating from a feed horn, wherein the reflector comprises at least one reflect array antenna element, and reflecting the RF signal from the reflect array element, wherein the reflect array element comprises an electrically conductive strip, a patch element, overlaying the electrically conductive strip, and a ground plane. The ground plane is coupled between the patch element and the electrically conductive strip and comprises an opening, at least a portion of the opening overlapping with at least a portion of the electrically conductive strip, wherein the opening and the electrically conductive strip assist in generating the desired radiation pattern.

摘要翻译： 公开了天线元件，天线系统和使用时隙耦合天线元件产生信号的方法。 天线元件包括导电条，贴片元件，覆盖导电条和接地平面。 所述接地平面耦合在所述贴片元件和所述导电条之间并且包括开口，所述开口的至少一部分与所述导电条的至少一部分重叠，其中所述开口和所述导电条可以反射入射无线电 频率（RF）能量。 根据本发明的方法包括用从馈电喇叭发射的RF信号照射反射器，其中反射器包括至少一个反射阵列天线元件，并且反射来自反射阵列元件的RF信号，其中反射阵列元件 包括导电条，贴片元件，覆盖导电条和接地平面。 所述接地平面耦合在所述贴片元件和所述导电条之间并且包括开口，所述开口的至少一部分与所述导电条的至少一部分重叠，其中所述开口和所述导电条有助于产生所述导电条 期望的辐射图。

公开(公告)号：US07242904B2

公开(公告)日：2007-07-10

申请号：US11259913

申请日：2005-10-27

申请人： Sudhakar K. Rao ,  David Bressler ,  Arun Bhattacharyya

发明人： Sudhakar K. Rao ,  David Bressler ,  Arun Bhattacharyya

IPC分类号： H04B7/185

CPC分类号： H01Q13/0208 ,  H01Q1/288 ,  H01Q5/55 ,  H01Q19/13 ,  H01Q25/04

摘要： A dual-band multiple beam antenna system for a communications satellite sharing a set of reflector antennas for the transmit and receive frequencies. One set of reflectors is common to both the downlink and uplink frequencies. The feed horns are diplexed and exhibit frequency-dependent radiation patterns that separate the phase centers over the downlink and uplink frequency bands to obtain dual-band performance. The focal point of the reflector is in close proximity to the phase center corresponding to the downlink frequency band. The phase center for the uplink frequency band is spaced a predetermined distance from the phase center of the downlink frequency band. According to the present invention, the uplink frequencies are defocused and the downlink frequencies are focused thereby creating identical radiation patterns at both frequency bands and over the coverage region of the communications satellite.

摘要翻译： 一种用于通信卫星的双频多波束天线系统，其共享用于发射和接收频率的一组反射器天线。 一组反射器对于下行链路和上行链路频率是共同的。 馈电喇叭是双工的，并且表现出频率依赖的辐射图，其通过下行链路和上行链路频带分离相位中心以获得双频带性能。 反射器的焦点靠近对应于下行链路频带的相位中心。 上行频带的相位中心与下行频带的相位中心隔开规定的距离。 根据本发明，上行链路频率被散焦，并且下行链路频率被聚焦，从而在通信卫星的两个频带和覆盖区域上产生相同的辐射图。

公开(公告)号：US07053847B2

公开(公告)日：2006-05-30

申请号：US10917986

申请日：2004-08-11

申请人： Steven S. Chan ,  Te Kao Wu ,  Arun Bhattacharyya ,  Juan Rivera ,  Phillip L. Metzen

发明人： Steven S. Chan ,  Te Kao Wu ,  Arun Bhattacharyya ,  Juan Rivera ,  Phillip L. Metzen

IPC分类号： H01Q13/12 ,  H01Q13/10

CPC分类号： H01Q13/106 ,  H01Q21/0087 ,  H01Q21/0093 ,  H01Q21/064

摘要： A phased array antenna structure capable of operation at millimeter-wave frequencies and having multiple ring slot radiator elements (10). The RF feed structure for each radiator element includes a feed via (28) extending part-way through a multi-layer structure (FIG. 3) on which the radiator elements (10) are formed and a strip line feed probe (30) extending from the via (28) toward the radiator element. A key feature facilitating high-frequency operation is the inclusion of multiple mode suppressors (32) surrounding the via (28) and providing a smooth transition from a coaxial mode of RF transmission to a strip line mode of RF transmission. The feed probe (30) is tailored to provide either a narrow-band or a wideband frequency characteristic.

摘要翻译： 一种相位阵列天线结构，其能够在毫米波频率下操作并具有多个环形槽辐射体元件（10）。 用于每个散热器元件的RF馈送结构包括在其上分布有散热器元件（10）的多层结构（图3的）的馈通通道（28） 以及从通孔（28）朝向散热器元件延伸的带状线馈送探针（30）。 促进高频操作的关键特征是包括围绕通孔（28）的多个模式抑制器（32）并且提供从RF传输的同轴模式到RF传输的带状线路模式的平滑过渡。 馈送探针（30）被定制以提供窄带或宽带频率特性。