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公开(公告)号：US20090298421A1
公开(公告)日：2009-12-03
申请号：US11994578
申请日：2005-07-04
IPC分类号： H04B7/15
CPC分类号： H01Q25/004 , H01Q13/206 , H01Q21/065 , H01Q21/08 , H04B7/1555
摘要： The invention discloses a repeater antenna for use in point-to-point applications in telecommunications systems in the microwave range, intended for connecting transmissions from a first radio unit at a first site to a second radio unit at a second site. The repeater antenna is essentially plane, and is designed as a traveling wave antenna with at least a first and a second antenna beam, so that the first beam can be used for transmissions to and from said first radio unit, and the second beam can be used for transmissions to and from said second radio unit.
摘要翻译： 本发明公开了一种用于在微波范围内的电信系统中的点对点应用中的中继器天线，用于连接从第一站点处的第一无线电单元到第二站点处的第二无线电单元的传输。 中继器天线基本上是平面的，并且被设计为具有至少第一和第二天线波束的行波天线，使得第一波束可以用于从第一无线电单元传输到第一和第二天线波束，并且第二波束可以是 用于与所述第二无线电单元的传输。
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公开(公告)号：US5016018A
公开(公告)日：1991-05-14
申请号：US326935
申请日：1989-03-22
CPC分类号： H01Q3/2605 , G01N22/00 , G01S13/9023 , H01Q25/004
摘要： A digital aperture synthesized radiometer for synthesizing the imaging an image scene. A plurality of antenna arrays receive radiation emitted or reflected from an scene, and an analog to digital coverter converts received radiation into digitized signals. A digital beamformer synthesizes the digitized signals to provide an image corresponding to the scene. The digital beamformer comprises individual digital beamformers which generate a set of fanbeam signals for each array. The beamformers provide for cross track imaging of the scene. A digital interferometer correlates corresponding pairs of fanbeam signals from the two sets of fanbeam signals to produce a chirp signal for each pair. A matched filter processes the chirp signals to transform each chirp signal into a corresponding image point of the scene. This provides for along track imaging of the scene. The beamformers include an amplitude weighting and data turning circuit to reduce fanbeam signal sidelobe levels and eliminate alternate mainlobes from the digitized radiation signals to reduce mainlobe widening. A fast Fourier transform circuit in the beamformers generally comprises a decimation-in-time algorithm implemented by means of a plurality of parallel and cascaded butterfly computation circuits. Image processing methods for achieving digital radiometry are also disclosed.
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公开(公告)号：US4845506A
公开(公告)日：1989-07-04
申请号：US879315
申请日：1986-06-27
申请人： Yoshihisa Shibata , Hiroshi Mizuno
发明人： Yoshihisa Shibata , Hiroshi Mizuno
CPC分类号： G01S13/60 , H01Q25/004
摘要： A side-looking array antenna system is disclosed in which the inclination angle of the antenna main beam is determined depending on the intervals of a plurality of antenna elements forming an array. A switch is provided to selectively connect one of the ports of an antenna feeder to a signal source or the like. The switch is used to select one of the ports of the antenna feeder as an excitation port, thereby reversing the direction of inclination of the antenna main beam. The antenna main beam can thus be directed in either of the two directions by the operation of the switch. Also, by using this antenna system, a Doppler radar vehicle speedometer with small calculation error, automotive radar and the like may be simply configured.
摘要翻译： 公开了一种侧视阵列天线系统，其中天线主波束的倾斜角度取决于形成阵列的多个天线元件的间隔。 提供开关以选择性地将天线馈线的端口之一连接到信号源等。 该开关用于选择天线馈线的一个端口作为激励端口，从而反转天线主波束的倾斜方向。 因此，通过开关的操作，天线主波束可以在两个方向中的任一方向上被引导。 此外，通过使用该天线系统，可以简单地配置具有小计算误差的多普勒雷达车辆速度计，汽车雷达等。
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公开(公告)号：US4746923A
公开(公告)日：1988-05-24
申请号：US378575
申请日：1982-05-17
申请人： Leonard Schwartz , Robert Bevan
发明人： Leonard Schwartz , Robert Bevan
CPC分类号： H01Q25/004
摘要： A gamma feed microstrip antenna for a Doppler navigation system includes a forward firing feed parallel spaced to a backward firing feed. A plurality of parallel spaced radiating arrays are transversely connected between the feeds. Each array includes radiating elements of preselected sizes having radiating coefficients and coupling coefficients to the feeds whereby an amplitude function of the antenna along the axis of travel is a truncation of a long slanted array amplitude function. Sequential excitation of four input ports at the ends of the feeds causes sequential generation of four beams. Return signals to the antenna, at the four input ports, may be sampled and held for averaging. This antenna structure is adapted for use to as to provide frequency, temperature and over-water corrections.
摘要翻译： 用于多普勒导航系统的伽马进给微带天线包括与反向燃烧进给平行间隔开的向前射击进给。 多个平行间隔的辐射阵列横向地连接在进料之间。 每个阵列包括具有辐射系数和耦合系数的预选尺寸的辐射元件，由此沿行进轴的天线的振幅函数是长斜面阵列振幅函数的截断。 在进料端部的四个输入端口的顺序激励导致四个波束的顺序生成。 在四个输入端口向天线返回信号可能被采样并保持平均。 该天线结构适于用于提供频率，温度和过水校正。
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公开(公告)号：US4698639A
公开(公告)日：1987-10-06
申请号：US818646
申请日：1986-01-14
申请人： James B. Mead , Robert Bevan , Leonard Schwartz
发明人： James B. Mead , Robert Bevan , Leonard Schwartz
CPC分类号： H01Q15/24 , H01Q15/244 , H01Q25/004
摘要： An apparatus and a method for achieving simultaneous circular polarization of a four-beam doppler antenna wherein four different grid layers are positioned into a radome. The first grid layer, besides radiating a linear polarized beam, is used to partially reduce contaminants of the linearly polarized beam by means of cross-hatch strips. The second grid layer is used to further purify the linear polarized beam such that an essentially purified linear polarized beam is obtained. The third grid layer, designed according to certain equations, is used to convert the purified linearly polarized beam into a partially circularly polarized beam. And the fourth grid layer is used to make sure that the circularly polarized beam is perfectly matched.
摘要翻译： 用于实现四光束多普勒天线的同时圆极化的装置和方法，其中四个不同的栅格层被定位到天线罩中。 除了辐射线性偏振光束之外，第一栅格层用于通过交叉阴影线部分地减少线偏振光束的污染物。 第二栅格层用于进一步纯化线性偏振光束，使得获得基本上纯化的线性偏振光束。 根据某些方程设计的第三栅格层用于将经纯化的线偏振光束转换为部分圆偏振光束。 第四栅格层用于确保圆偏振光束完美匹配。
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公开(公告)号：US4675681A
公开(公告)日：1987-06-23
申请号：US766341
申请日：1985-08-16
申请人： Richard R. Kinsey
发明人： Richard R. Kinsey
CPC分类号： H01Q3/24 , H01Q25/004
摘要： A planar array antenna is contructed of two sets of slotted rectangular waveguides positioned to have the slots of adjacent waveguides offset by half the slot spacing. A bidirectional feed is used with phase switching between inputs to produce four distinct output beams from the array.
摘要翻译： 平面阵列天线被构造成两组开槽的矩形波导，定位为使相邻波导的槽偏移一半的间隙。 使用双向进给，在输入之间进行相位切换，从阵列产生四个不同的输出光束。
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公开(公告)号：US4180817A
公开(公告)日：1979-12-25
申请号：US683203
申请日：1976-05-04
申请人： Gary G. Sanford
发明人： Gary G. Sanford
CPC分类号： H01Q25/004 , H01Q13/206 , H01Q21/065
摘要： Radio frequency antenna arrays of radiating slot apertures serially connected along a predetermined path transverse to the radiating slot apertures. In the exemplary embodiments, the radiating slot apertures are formed by parallel edges of conductive radiator surfaces where the edges are spaced apart by substantially one-half wavelength at the anticipated antenna operating frequency. Such radiator surfaces are, in some embodiments, dimensioned in a direction parallel to the apertures in relation to the relative proportion of radio frequency energy which is to be radiated to/from the slot apertures associated therewith to thus determine the total array aperture amplitude taper while the spacing between the radiator surfaces determines the phase taper across the total array aperture. Other exemplary embodiments utilize internal reflections in an array to determine the array amplitude taper and still other exemplary embodiments combine a plurality of such arrays to form two-dimensional special purpose arrays.
摘要翻译： 辐射槽孔的射频天线阵列沿着横向于辐射槽孔的预定路径串联连接。 在示例性实施例中，辐射槽孔由导电辐射器表面的平行边缘形成，其中边缘在预期的天线工作频率处间隔开大致一半的波长。 在一些实施例中，这样的散热器表面的尺寸在平行于孔的方向上相对于要与其相关联的槽孔辐射的射频能量的相对比例，从而确定总阵列孔径振幅锥度， 散热器表面之间的间距确定整个阵列孔径的相位锥度。 其它示例性实施例利用阵列中的内部反射来确定阵列振幅锥度，而其它示例性实施例组合多个这样的阵列以形成二维专用阵列。
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公开(公告)号：US3423752A
公开(公告)日：1969-01-21
申请号：US3423752D
申请日：1966-12-08
发明人： SCHWARTZ LEONARD
CPC分类号： H01Q25/004
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公开(公告)号：US2940075A
公开(公告)日：1960-06-07
申请号：US63458157
申请日：1957-01-16
申请人： GEN PRECISION INC
发明人： GUS STAVIS , HENRY SALTZMAN , ZALESKI JOHN F
CPC分类号： H01Q21/22 , H01Q25/004
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公开(公告)号：US20080084353A1
公开(公告)日：2008-04-10
申请号：US11882038
申请日：2007-07-30
申请人： Shih-Chieh Cheng
发明人： Shih-Chieh Cheng
IPC分类号： H01Q1/38
CPC分类号： H01Q21/28 , H01Q1/243 , H01Q9/0442 , H01Q9/42 , H01Q21/205 , H01Q21/24 , H01Q25/004
摘要： A printed antenna includes a radiating portion, a capacitance matching portion, an inductance matching portion, a feeding portion and a grounding portion. The capacitance matching portion is disposed parallel to the radiating portion. One end of the inductance matching portion is electrically connected with the radiating portion, and the other end of the inductance matching portion is electrically connected with the capacitance matching portion. The feeding portion, which is electrically connected with one inner side of the inductance matching portion, is located among the capacitance matching portion, the inductance matching portion, and the radiating portion. The feeding portion is roughly perpendicular to the radiating portion. The grounding portion is electrically connected with an outer side of the inductance matching portion. In addition, a printed antenna module including several printed antennas is also disclosed.
摘要翻译： 印刷天线包括辐射部分，电容匹配部分，电感匹配部分，馈电部分和接地部分。 电容匹配部分平行于辐射部分设置。 电感匹配部的一端与散热部电连接，电感匹配部的另一端与电容匹配部电连接。 与电感匹配部分的一个内侧电连接的馈电部分位于电容匹配部分，电感匹配部分和辐射部分之间。 馈送部分大致垂直于辐射部分。 接地部与电感匹配部的外侧电连接。 此外，还公开了包括多个印刷天线的印刷天线模块。
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