公开(公告)号：US20130050048A1

公开(公告)日：2013-02-28

申请号：US13222575

申请日：2011-08-31

Applicant: David Green ,  Cornelis Frederik Du Toit

Inventor： David Green ,  Cornelis Frederik Du Toit

IPC: H01Q1/50 ,  H01Q9/04

CPC classification number: H01Q23/00 ,  H01Q9/0478 ,  H01Q21/30

Abstract: Disclosed herein is an antenna feed design for transmitting or receiving a circularly polarized microwave signal, and a communication device using that antenna feed design. Resonating disks are bowl-shaped to balance E-plane and H-plane magnetic field patterns, decreasing cross-polarization, and providing mechanical rigidity. A non-planar circuit replaces planar microstrip transmission lines for transmitting the signal, with 90° phase shifts, from an input point to excitation points. This non-planar circuit overcomes some of the layout problems encountered in planar circuits. It maintains impedance matching from the input point to the excitation points by progressively tapering down the characteristic transmission line impedance of each successive section. The non-planar circuit has sufficient mechanical strength and rigidity to allow it to be supported at only two anchor points. Similarly, the non-planar disks are also of sufficient strength to require only a single anchor point each. Thus, the antenna parts do not require any additional dielectric substrate support, and all parts are DC grounded. The use of fingers surrounding the ground plane and extending towards the resonating disks results in improved off-boresight polarization. All components of the antenna feed are built and combined without the use of solder or dielectric substrate support, creating a stable, corrosion-resistant, low-cross polarization antenna.

Abstract translation: 本文公开了一种用于发送或接收圆偏振微波信号的天线馈送设计，以及使用该天线馈送设计的通信设备。 谐振盘是碗状的，以平衡E平面和H平面磁场图案，减少交叉极化，并提供机械刚度。 非平面电路代替用于从输入点到激励点传输具有90°相移的信号的平面微带传输线。 该非平面电路克服了平面电路中遇到的一些布局问题。 它通过逐渐减小每个连续部分的特性传输线阻抗来保持从输入点到激励点的阻抗匹配。 非平面电路具有足够的机械强度和刚度，以允许其仅在两个锚定点处被支撑。 类似地，非平面盘也具有足够的强度，每个仅需要一个锚定点。 因此，天线部件不需要任何额外的电介质基板支撑，并且所有部件都是直流接地的。 使用围绕接地平面并且朝着谐振盘延伸的指状物导致改进的远视偏振。 天线馈电的所有组件都被构建和组合，而不使用焊料或电介质基板支撑，产生稳定的，耐腐蚀的低交叉极化天线。

公开(公告)号：US08912974B2

公开(公告)日：2014-12-16

申请号：US13222575

申请日：2011-08-31

Applicant: David Green ,  Cornelis Frederik Du Toit

Inventor： David Green ,  Cornelis Frederik Du Toit

IPC: H01Q1/50 ,  H01Q9/04 ,  H01Q23/00 ,  H01Q21/30

CPC classification number: H01Q23/00 ,  H01Q9/0478 ,  H01Q21/30

Abstract: Disclosed herein is an antenna feed design for transmitting or receiving a circularly polarized microwave signal, and a communication device using that antenna feed design. Resonating disks are bowl-shaped to balance E-plane and H-plane magnetic field patterns, decreasing cross-polarization, and providing mechanical rigidity. A non-planar circuit replaces planar microstrip transmission lines for transmitting the signal, with 90° phase shifts, from an input point to excitation points. This non-planar circuit overcomes some of the layout problems encountered in planar circuits. It maintains impedance matching from the input point to the excitation points by progressively tapering down the characteristic transmission line impedance of each successive section. The non-planar circuit has sufficient mechanical strength and rigidity to allow it to be supported at only two anchor points. Similarly, the non-planar disks are also of sufficient strength to require only a single anchor point each. Thus, the antenna parts do not require any additional dielectric substrate support, and all parts are DC grounded. The use of fingers surrounding the ground plane and extending towards the resonating disks results in improved off-boresight polarization. All components of the antenna feed are built and combined without the use of solder or dielectric substrate support, creating a stable, corrosion-resistant, low-cross polarization antenna.

Abstract translation: 本文公开了一种用于发送或接收圆偏振微波信号的天线馈送设计，以及使用该天线馈送设计的通信设备。 谐振盘是碗状的，以平衡E平面和H平面磁场图案，减少交叉极化，并提供机械刚度。 非平面电路代替用于从输入点到激励点传输具有90°相移的信号的平面微带传输线。 该非平面电路克服了平面电路中遇到的一些布局问题。 它通过逐渐减小每个连续部分的特性传输线阻抗来保持从输入点到激励点的阻抗匹配。 非平面电路具有足够的机械强度和刚度，以允许其仅在两个锚定点处被支撑。 类似地，非平面盘也具有足够的强度，每个仅需要一个锚定点。 因此，天线部件不需要任何额外的电介质基板支撑，并且所有部件都是直流接地的。 使用围绕接地平面并且朝着谐振盘延伸的指状物导致改进的远视偏振。 天线馈电的所有组件都被构建和组合，而不使用焊料或电介质基板支撑，产生稳定的，耐腐蚀的低交叉极化天线。

公开(公告)号：US06236367B1

公开(公告)日：2001-05-22

申请号：US09160914

申请日：1998-09-25

Applicant: Cornelis Frederik Du Toit ,  Mathias Martin Ernest Ehlen ,  Richard John Hutchinson ,  John Heywood Thomson

Inventor： Cornelis Frederik Du Toit ,  Mathias Martin Ernest Ehlen ,  Richard John Hutchinson ,  John Heywood Thomson

IPC: H01Q138

CPC classification number: H01Q9/0414 ,  H01Q9/0407 ,  H01Q9/0428 ,  H01Q9/0435 ,  H01Q9/0471

Abstract: A radiating element for dual polarised operation in a linear antenna array is disclosed. The radiating element is a dual polarised radiating patch element consisting of a ground plane, a lower patch, an upper patch and parasitic elements. The lower patch and upper patch are stacked above the ground plane in a spaced apart relationship. The parasitic elements lie in the same plane as the lateral edges of the lower patch. Supports are used to hold the patches and the parasitic elements in a spaced apart relationship. The parasitic elements are fed from a central area of the lower patch by microstrips. The ground plane has apertures which are of a dumbbell shape to achieve the same effective length as long apertures. Orthogonally disposed strip type driven elements span across the central portions of the apertures and the length of these strips is selected to achieve the desired matchings. The feed to the driven elements will typically form part of a feed network etched onto a PCB mounted adjacent to the ground plane with conducting elements facing away from the ground plane. One requirement of this device is that the return loss at each port must satisfy a certain minimum level over a given frequency band. This is satisfied by employing an aperture coupled stacked patched configuration. Another requirement is that isolation between the two ports has to satisfy a certain minimum allowed level which is achieved by obtaining almost perfuect symmetry in one plane. In order to narrow the beam width for the vertically polarised radiation parasitic elements are provided which are feed from a region located near the middle of the lower patch via microstrips.

Abstract translation: 公开了一种用于线性天线阵列中的双极化操作的辐射元件。 辐射元件是由接地平面，下部贴片，上部贴片和寄生元件组成的双极化辐射贴片元件。 下贴片和上贴片以间隔开的关系堆叠在地平面上方。 寄生元件位于与下贴片的侧边缘相同的平面上。 支撑件用于将贴片和寄生元件保持间隔开的关系。 寄生元件通过微带从下部贴片的中心区域供给。 接地平面具有哑铃形状的孔，以实现与长孔相同的有效长度。 正交设置的带式驱动元件跨过孔的中心部分，并且选择这些条的长度以实现期望的匹配。 被驱动元件的馈送通常将形成蚀刻到邻近接地平面安装的PCB上的馈电网络的一部分，其中导电元件背离接地平面。 该设备的一个要求是每个端口的回波损耗必须在给定频带上满足一定的最小电平。 这通过采用孔耦合堆叠修补配置来满足。 另一个要求是两个端口之间的隔离必须满足一定的最小允许电平，这通过在一个平面中获得几乎完美的对称性来实现。 为了减小垂直极化辐射的光束宽度，提供了从经由微带的下贴片中间附近的区域进给的寄生元件。

公开(公告)号：US08744384B2

公开(公告)日：2014-06-03

申请号：US12952395

申请日：2010-11-23

Applicant: Gregory Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

Inventor： Gregory Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

IPC: H04B1/04

CPC classification number: H03H7/40 ,  H01P5/04 ,  H01Q1/242 ,  H01Q1/50 ,  H03F1/56 ,  H03F3/60 ,  H03H7/38 ,  H04B1/0458

Abstract: An embodiment of the present invention provides an apparatus, comprising an input port and a dynamic impedance matching network capable of determining a mismatch at the input port and dynamically changing the RF match by using at least one matching element that includes at least one voltage tunable dielectric capacitor. The matching network may be a “Pi”, a “T”, or “ladder” type network and the apparatus may further comprise at least one directional coupler capable of signal collection by sampling a portion of an incident signal, a reflected signal or both. In an embodiment of the present invention, the apparatus may also include a control and power control & logic unit (PC LU) to convert input analog signals into digital signals and sensing VSWR phase and magnitude and processing the digital signals using an algorithm to give it a voltage value and wherein the voltage values may be compared to values coming from the coupler and once compared and matched, the values may be passed to a Hi Voltage Application Specific Integrated Circuit (HV ASIC) to transfer and distribute compensatory voltages to the matching network elements. Additional embodiments are disclosed.

Abstract translation: 本发明的实施例提供了一种装置，其包括输入端口和动态阻抗匹配网络，其能够通过使用至少一个匹配元件来确定输入端口处的失配并动态地改变RF匹配，该匹配元件包括至少一个电压可调电介质 电容器。 匹配网络可以是“Pi”，“T”或“梯形”型网络，并且该装置还可以包括至少一个定向耦合器，其能够通过对入射信号的一部分，反射信号或两者进行采样来进行信号采集 。 在本发明的一个实施例中，该装置还可以包括控制和功率控制与逻辑单元（PC LU），用于将输入的模拟信号转换成数字信号，并且使用算法给VSWR相位和幅度并处理数字信号 电压值，并且其中电压值可以与来自耦合器的值进行比较，并且一旦比较和匹配，则该值可以被传递到高电压专用集成电路（HV ASIC），以将补偿电压传输和分配给匹配网络 元素。 公开了另外的实施例。

公开(公告)号：US20110063042A1

公开(公告)日：2011-03-17

申请号：US12952395

申请日：2010-11-23

Applicant: Greg Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

Inventor： Greg Mendolia ,  James Andrew Martin, III ,  Izz Khayo ,  Cornelis Frederik Du Toit ,  Heinz Bachmann ,  William McKinzie

IPC: H03H7/38

CPC classification number: H03H7/40 ,  H01P5/04 ,  H01Q1/242 ,  H01Q1/50 ,  H03F1/56 ,  H03F3/60 ,  H03H7/38 ,  H04B1/0458

Abstract: An embodiment of the present invention provides an apparatus, comprising an input port and a dynamic impedance matching network capable of determining a mismatch at the input port and dynamically changing the RF match by using at least one matching element that includes at least one voltage tunable dielectric capacitor. The matching network may be a “Pi”, a “T”, or “ladder” type network and the apparatus may further comprise at least one directional coupler capable of signal collection by sampling a portion of an incident signal, a reflected signal or both. In an embodiment of the present invention, the apparatus may also include a control and power control & logic unit (PC LU) to convert input analog signals into digital signals and sensing VSWR phase and magnitude and processing the digital signals using an algorithm to give it a voltage value and wherein the voltage values may be compared to values coming from the coupler and once compared and matched, the values may be passed to a Hi Voltage Application Specific Integrated Circuit (HV ASIC) to transfer and distribute compensatory voltages to the matching network elements. Additional embodiments are disclosed.

Abstract translation: 本发明的实施例提供了一种装置，其包括输入端口和动态阻抗匹配网络，其能够通过使用至少一个匹配元件来确定输入端口处的失配并动态地改变RF匹配，该匹配元件包括至少一个电压可调电介质 电容器。 匹配网络可以是“Pi”，“T”或“梯形”型网络，并且该装置还可以包括至少一个定向耦合器，其能够通过对入射信号的一部分，反射信号或两者进行采样来进行信号采集 。 在本发明的一个实施例中，该装置还可以包括控制和功率控制与逻辑单元（PC LU），用于将输入的模拟信号转换成数字信号，并且使用算法给VSWR相位和幅度并处理数字信号 电压值，并且其中电压值可以与来自耦合器的值进行比较，并且一旦比较和匹配，则该值可以被传递到高电压专用集成电路（HV ASIC），以将补偿电压传输和分配给匹配网络 元素。 公开了另外的实施例。