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1. 发明授权

US4639733A Direction finding 失效
标题翻译：方向发现
公开(公告)号：US4639733A
公开(公告)日：1987-01-27
申请号：US609232
申请日：1984-05-11
申请人： Nigel J. R. King , Ian W. N. Pawson , Michael P. Baker , Robert N. Shaddock , Edward V. Stansfield
发明人： Nigel J. R. King , Ian W. N. Pawson , Michael P. Baker , Robert N. Shaddock , Edward V. Stansfield
IPC分类号： G01S3/48 , G01S5/02
CPC分类号： G01S3/48
摘要： An interferometer type DF system uses an array of five antennas (A,B,C,D,E) arranged at the apices of a regular pentagon to define five wide apertures along the sides of the pentagon and a further five apertures along the diagonals. The phases of the signals received by each antenna, are measured modulo 2.pi. and processed to give a unique bearing of the radio source to the accuracy of the widest aperture defined by the array. One method of processing the phases is to calculate from them the Fourier coefficients of the Fourier series representing the spatial phase distribution. By comparing the difference between each calculated coefficient and a corresponding order coefficient of a set of imaginary antenna phases expressed as integral multiples of 2.pi., the complete 2.pi. phase differences between the measured phases modulo 2.pi. can be found. The bearing angle of the received signal is then the phase of the vector resulting from subtracting the first order Fourier coefficient of the integral phases from the calculated first order coefficient.
摘要翻译：干涉仪型DF系统使用布置在正五边形顶点的五根天线（A，B，C，D，E）的阵列，以沿着五边形的侧面限定五个宽的孔，以及沿对角线的另外五个孔。由每个天线接收的信号的相位被模2 pi测量，并被处理以给予无线电源的独特的轴承以由阵列限定的最宽孔的精度。处理相位的一种方法是从它们计算表示空间相位分布的傅里叶级数的傅立叶系数。通过比较表示为2 pi的整数倍的一组虚拟天线相位的每个计算系数和相应的次序系数之间的差异，可以找到所测量的相位2 pi之间的完整2 pi相位差。接收信号的方位角就是从计算出的一阶系数中减去积分相位的一阶傅里叶系数得到的向量的相位。

2. 发明授权

US07532164B1 Circular polarized antenna 有权
标题翻译：圆极化天线
公开(公告)号：US07532164B1
公开(公告)日：2009-05-12
申请号：US11778790
申请日：2007-07-17
申请人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
发明人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
IPC分类号： H01Q1/38 , H01Q11/12
CPC分类号： H01Q9/0428
摘要： A circular polarized signal receiving antenna (100) including an active element having first and second ends separated by a gap, a dimension of the active element, between the first and second ends thereof, corresponding to approximately one wavelength of a resonant operating frequency of the antenna. A feed-point is coupled to the active element, wherein the feed-point is located approximately one-quarter of the wavelength from the first end of the active element and approximately three-quarters of the wavelength from the second end of the active element. In one embodiment, the feed-point is reactively coupled to the active element.
摘要翻译：圆偏振信号接收天线（100）包括有源元件，所述有源元件具有由间隙分开的第一和第二端，所述有源元件的第一和第二端之间的尺寸对应于所述有源元件的谐振工作频率的大约一个波长天线。馈电点耦合到有源元件，其中馈电点位于离有源元件的第一端大约四分之一波长的距离处，并且距离有源元件的第二端的波长大约是四分之三。在一个实施例中，馈电点反应地耦合到有源元件。

3. 发明授权

US07839339B2 Circular polarized antenna 有权
标题翻译：圆极化天线
公开(公告)号：US07839339B2
公开(公告)日：2010-11-23
申请号：US12433983
申请日：2009-05-01
申请人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
发明人： James P. Phillips , Guangli Yang , Robert N. Shaddock , Thomas J. Walczak
IPC分类号： H01Q1/38 , H01Q11/12
CPC分类号： H01Q9/0428
摘要： A circular polarized signal receiving antenna includes an active element having first and second ends separated by a gap. A dimension of the active element between the first and second ends thereof corresponds to approximately one wavelength of a resonant operating frequency of the antenna. A feed-point is coupled to the active element, wherein the feed-point is located approximately one-quarter of the wavelength from the first end of the active element and approximately three-quarters of the wavelength from the second end of the active element. In one embodiment, the feed-point is coupled to the active element.
摘要翻译：圆偏振信号接收天线包括具有由间隙分开的第一和第二端的有源元件。有源元件在其第一端和第二端之间的尺寸对应于天线的谐振工作频率的近似一个波长。馈电点耦合到有源元件，其中馈电点位于离有源元件的第一端大约四分之一波长的距离处，并且距离有源元件的第二端的波长大约是四分之三。在一个实施例中，馈电点耦合到有源元件。

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