公开(公告)号：US09819081B2

公开(公告)日：2017-11-14

申请号：US14325300

申请日：2014-07-07

申请人： Hassan Mohamed El-Sallabi ,  Mohamed Mahmoud Abdallah ,  Khalid Ali Qaraqe ,  Gregory H. Huff ,  Jean-Francois Chamberland-Tremblay

发明人： Hassan Mohamed El-Sallabi ,  Mohamed Mahmoud Abdallah ,  Khalid Ali Qaraqe ,  Gregory H. Huff ,  Jean-Francois Chamberland-Tremblay

IPC分类号： G01S5/04 ,  H01Q3/24 ,  G01S3/38 ,  H01Q21/06 ,  G01S3/14 ,  G01S3/72

CPC分类号： H01Q3/24 ,  G01S3/14 ,  G01S3/38 ,  G01S3/72 ,  H01Q21/065

摘要： The reconfigurable radio direction finder system and method uses a reconfigurable antenna to electronically cycle through a plurality of different antenna configurations to determine a signal direction. Specifically, the reconfigurable antenna is cycled through N different antenna configurations, where N is an integer greater than one, where each antenna configuration has a pointing direction associated therewith defined by an elevation angle θn of an n-th antenna configuration, where n is an integer between 1 and N, and an azimuthal angle φn of the n-th antenna configuration. A received signal strength of the radio signal is measured for each of the antenna configurations as a power output of the n-th antenna configuration, Pn. A spherical weighted directional mean vector (XDF, YDF, ZDF) is then estimated for the radio signal as X DF = 1 N ⁢ ∑ n = 1 N ⁢ P n ⁢ ⁢ cos ⁡ ( ϕ n ) ⁢ ⁢ sin ⁡ ( θ n ) , ⁢ Y DF = 1 N ⁢ ∑ n = 1 N ⁢ P n ⁢ ⁢ sin ⁡ ( ϕ n ) ⁢ ⁢ sin ⁡ ( θ n ) ⁢ ⁢ and Z DF = 1 N ⁢ ∑ n = 1 N ⁢ P n ⁢ ⁢ sin ⁡ ( θ n ) .

公开(公告)号：US07330152B2

公开(公告)日：2008-02-12

申请号：US11257382

申请日：2005-10-24

申请人： Shenghui Zhang ,  Jennifer T. Bernhard ,  Gregory H. Huff ,  Garvin Cung

发明人： Shenghui Zhang ,  Jennifer T. Bernhard ,  Gregory H. Huff ,  Garvin Cung

IPC分类号： H01Q1/38

CPC分类号： H01Q9/0407 ,  H01Q3/24 ,  H01Q3/44 ,  H01Q19/30

摘要： An antenna device includes a dielectric layer, an electrical ground layer carried on one side of the dielectric layer, and an antenna arrangement carried on another side of the dielectric layer. This arrangement includes two parasitic microstrip elements and a microstrip signal element. The signal element is structured to radiate an electromagnetic signal in response to application of a corresponding electrical communication signal. The parasitic antenna elements extend along opposing longitudinal sides of the signal element and each includes an adjustable component operatively connected between two microstrips. The adjustable component is structured to selectively adjust operable length of a selected one of the parasitic antenna elements to change a maximum radiation direction of the antenna device.

摘要翻译： 天线装置包括电介质层，承载在电介质层的一侧的电接地层以及承载在电介质层另一侧的天线装置。 这种布置包括两个寄生微带元件和微带信号元件。 信号元件构造成响应于相应的电通信信号的应用而辐射电磁信号。 寄生天线元件沿着信号元件的相对的纵向侧面延伸，并且每个都包括可操作地连接在两个微带之间的可调组件。 可调节部件被构造成选择性地调节所选择的一个寄生天线元件的可操作长度，以改变天线装置的最大辐射方向。