公开(公告)号：US5225841A

公开(公告)日：1993-07-06

申请号：US722023

申请日：1991-06-27

申请人： Kapriel V. Krikorian ,  Robert A. Rosen ,  Gib F. Lewis

发明人： Kapriel V. Krikorian ,  Robert A. Rosen ,  Gib F. Lewis

IPC分类号： G01S7/02 ,  G01S7/28 ,  G01S7/282 ,  G01S13/44 ,  H01Q3/24

CPC分类号： G01S7/2813 ,  G01S13/4409 ,  H01Q3/247

摘要： Variable array thinning to achieve efficient radar pulse shaping for advanced radar waveforms such as pulse burst or monopulse doppler. At the beginning of the pulse, only a few elements, spread out over the array, are turned on. The effective amplitude can be controlled with precision because each element is either off or at saturation. High efficiency is maintained because the off-state of each element is long enough so that prime power is not consumed.

公开(公告)号：US07265713B2

公开(公告)日：2007-09-04

申请号：US11450063

申请日：2006-06-09

申请人： Gib F. Lewis

发明人： Gib F. Lewis

IPC分类号： H01Q3/00 ,  G01S3/16

CPC分类号： H01Q21/06 ,  H01Q21/0087

摘要： An embodiment of an electronically scanned array antenna includes an array of radiative elements having an array height. A plurality of separate subarrays of the radiative elements include a first row comprising a first plurality of subarrays, wherein subarrays of the first plurality of subarrays are horizontally non-overlapping with one another, and a second row comprising a second plurality of subarrays. The subarrays of the second row are arranged vertically adjacent to the subarrays of the first row, wherein subarrays of the second plurality of subarrays are horizontally non-overlapping with one another. The radiative elements of the separate subarrays are not shared with any other subarray. The subarrays of the radiative elements have subarray heights which are smaller than the array height. In another embodiment, a method for suppressing grating lobe formation in a steered subarray antenna includes applying a first illumination function to a first subarray; applying a second illumination function to a second subarray; wherein the first illumination function is different from the second illumination function.

摘要翻译： 电子扫描阵列天线的实施例包括具有阵列高度的辐射元件阵列。 辐射元件的多个单独的子阵列包括第一行，其包括第一多个子阵列，其中第一多个子阵列的子阵列彼此水平不重叠，第二行包括第二多个子阵列。 第二行的子阵列垂直地布置在第一行的子阵列附近，其中第二多个子阵列的子阵列彼此水平地不重叠。 单独子阵列的辐射元素不与任何其他子阵列共享。 辐射元素的子阵列具有小于阵列高度的子阵列高度。 在另一个实施例中，用于抑制转向子阵列天线中的栅瓣形成的方法包括：将第一照明功能应用于第一子阵列; 将第二照明功能应用于第二子阵列; 其中所述第一照明功能不同于所述第二照明功能。

公开(公告)号：US5682165A

公开(公告)日：1997-10-28

申请号：US643132

申请日：1996-05-02

申请人： Gib F. Lewis ,  Eric N. Boe

发明人： Gib F. Lewis ,  Eric N. Boe

IPC分类号： G01R29/10 ,  H01Q3/26 ,  H01Q21/00 ,  G01S7/40

CPC分类号： H01Q21/0025 ,  H01Q3/267

摘要： A process for collecting phase and amplitude calibration data for an active array system without the use of external sensors. The relative phase and amplitudes of adjacent T/R modules are determined when viewed through the entire array system. The calibration process involves collecting and storing these phases and amplitudes for future use. A pulse-to-pulse phase or amplitude modulation mode is employed. An element is commanded into this mode to separate its signal (in frequency) from competing signals and leakages from the surrounding modules. A T/R inversion command allows for a single element to be switched to a transmit state while the remainder of the array is in the receive state. This provides for a reference signal during receive calibration, and for single module testing during transmit calibration.

摘要翻译： 用于收集有源阵列系统的相位和幅度校准数据而不使用外部传感器的过程。 当通过整个阵列系统观察时，确定相邻T / R模块的相对相位和振幅。 校准过程包括收集和存储这些阶段和幅度以供将来使用。 采用脉冲到脉冲相位或幅度调制方式。 一个元件被命令进入该模式，以将其信号（频率）与竞争信号和周围模块的泄漏分开。 T / R反转命令允许将单个元件切换到发送状态，而阵列的其余部分处于接收状态。 这在接收校准期间提供参考信号，并在发送校准期间提供单模块测试。

公开(公告)号：US07081851B1

公开(公告)日：2006-07-25

申请号：US11055006

申请日：2005-02-10

申请人： Gib F. Lewis

发明人： Gib F. Lewis

IPC分类号： H01Q3/24

CPC分类号： H01Q21/06 ,  H01Q21/0087

摘要： An embodiment of an electronically scanned array antenna includes an array of radiative elements having an array height. A plurality of separate subarrays of the radiative elements include a first row comprising a first plurality of subarrays, wherein subarrays of the first plurality of subarrays are horizontally non-overlapping with one another, and a second row comprising a second plurality of subarrays. The subarrays of the second row are arranged vertically adjacent to the subarrays of the first row, wherein subarrays of the second plurality of subarrays are horizontally non-overlapping with one another. The radiative elements of the separate subarrays are not shared with any other subarray. The subarrays of the radiative elements have subarray heights which are smaller than the array height. In another embodiment, a method for suppressing grating lobe formation in a steered subarray antenna includes applying a first illumination function to a first subarray; applying a second illumination function to a second subarray; wherein the first illumination function is different from the second illumination function.

公开(公告)号：US5657023A

公开(公告)日：1997-08-12

申请号：US642033

申请日：1996-05-02

申请人： Gib F. Lewis ,  Eric Boe

发明人： Gib F. Lewis ,  Eric Boe

IPC分类号： G01R29/10 ,  H01Q3/26 ,  G01S7/40

CPC分类号： H01Q3/267 ,  H01Q3/2652

摘要： A technique for phase-up of array antennas of regularly spaced lattice orientation, without the use of a nearfield or farfield range. The technique uses mutual coupling and/or reflections to provide a signal from one element to its neighbors. This signal provides a reference to allow for elements to be phased with respect to each other. After the first stage of the process is completed, the array is phased-up into, at most, four interleaved lattices. These interleaved lattices are then phased with respect to each other, thus completing the phase-up process.

摘要翻译： 一种用于定期间隔格子取向的阵列天线的更新技术，而不需要使用近场或远场。 该技术使用相互耦合和/或反射来从一个元件向其邻居提供信号。 该信号提供了允许元件相对于彼此分阶段的参考。 在完成该过程的第一阶段之后，将该阵列逐步放入至多四个交错网格中。 然后，这些交错网格相对于彼此分阶段化，从而完成了逐步处理。

公开(公告)号：US5644316A

公开(公告)日：1997-07-01

申请号：US642093

申请日：1996-05-02

申请人： Gib F. Lewis ,  Eric N. Boe

发明人： Gib F. Lewis ,  Eric N. Boe

IPC分类号： G01R29/10 ,  G01S7/282 ,  G01S7/40 ,  G01S13/02 ,  H01Q3/26 ,  H04B17/00

CPC分类号： H01Q3/267 ,  G01S7/4008 ,  G01S2007/4013 ,  G01S2013/0254 ,  G01S7/282

摘要： An RF drive leveling adjustment method using transmit amplitude adjustment range for use with active phased array antenna systems. Relative RF measurements of transmit amplitude adjustment range of an active array antenna or selected elements or sets of elements of the antenna are used to determine correction factors for RF drive levels of RF drive amplifier(s) used by transmit modules of the active array antenna. The method comprises the following steps. The first step comprises calibrating the transmit RF drive amplifiers of an active array antenna for a predetermined transmit duty factor and pulse repetition frequency. The second step comprises measuring relative RF measurements of transmit amplitude adjustment range of the transmit module. The third step comprises determining correction factors for RF drive levels of the transmit RF drive amplifiers. The fourth step comprises adjusting the RF drive level of the transmit RF drive amplifiers using the correction factors. by using the correction factors, phase and gain command linearization table performance of the transmit modules is preserved.

摘要翻译： 使用发射幅度调节范围的RF驱动调平调整方法用于有源相控阵天线系统。 使用有源阵列天线或所选元件或天线元件的发射幅度调节范围的相对RF测量来确定用于有源阵列天线的发射模块所使用的RF驱动放大器的RF驱动电平的校正因子。 该方法包括以下步骤。 第一步包括校准有源阵列天线的发射RF驱动放大器以达到预定的发射占空因数和脉冲重复频率。 第二步包括测量发射模块的发射振幅调整范围的相对RF测量值。 第三步包括确定发射RF驱动放大器的RF驱动电平的校正因子。 第四步包括使用校正因子调整发射RF驱动放大器的RF驱动电平。 通过使用校正因子，保持发送模块的相位和增益指令线性化表的性能。

公开(公告)号：US4832433A

公开(公告)日：1989-05-23

申请号：US948339

申请日：1986-12-31

申请人： Michael de La Chapelle ,  Hui-Pin Hsu ,  Gib F. Lewis ,  John E. Mantele

发明人： Michael de La Chapelle ,  Hui-Pin Hsu ,  Gib F. Lewis ,  John E. Mantele

IPC分类号： H01Q3/26 ,  H04B10/00

CPC分类号： H04B10/806 ,  H01Q3/2676

摘要： The corporate feed network employs light emitting opto-electronic components, such as laser diodes (12), connected together in a string (14) for distributing RF, microwave, MMW, digital signals, and pulse modulated light. Each diode provides two ports or facets which are coupled to optical fibers (16, 18) to connect to an active phased array antenna, for example. The diodes are selected in number and impedance to provide a good wideband impedance match to the RF/microwave/MMW/digital driving source. Multiple series strings of diodes may be employed, connected in parallel for larger corporate feed structures.

摘要翻译： 公司饲料网络采用发光光电子部件，例如用于分配RF，微波，MMW，数字信号和脉冲调制光的串（14）连接在一起的激光二极管（12）。 例如，每个二极管提供耦合到光纤（16,18）以连接到有源相控阵天线的两个端口或小面。 二极管的数量和阻抗被选择，以提供与RF /微波/ MMW /数字驱动源的良好的宽带阻抗匹配。 可以使用多个串联串联的二极管，并联连接用于较大的公司进料结构。