公开(公告)号：US5684491A

公开(公告)日：1997-11-04

申请号：US379820

申请日：1995-01-27

申请人： Edward M. Newman ,  Alfred R. Lopez ,  Gary A. Schay ,  John F. Pedersen

发明人： Edward M. Newman ,  Alfred R. Lopez ,  Gary A. Schay ,  John F. Pedersen

IPC分类号： H01Q3/26 ,  H01Q3/24 ,  H01Q21/28 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/10 ,  H04B7/26 ,  H04W16/24 ,  H04W16/28 ,  H01Q3/02 ,  H01Q3/12

CPC分类号： H04W16/28 ,  H01Q25/00 ,  H01Q3/24 ,  H04B7/0408 ,  H04B7/0491 ,  H04W16/24

摘要： In a cellular type communication system a sector antenna 12 provides coverage of a sector with a relatively low receive gain. A multi-beam antenna 20 covers the same sector with a plurality of narrower beams 21', 22', 23' and 24' providing higher gain. A multi-beam antenna system 10 provides higher gain operation by selecting the one of the narrower beams 21', 22', 23' or 24' currently providing best reception of a signal transmitted by a user and coupling that selected beam to a system receiver 18. Beam selection is accomplished by sequentially coupling each narrow beam to a microprocessor based control unit 40 and storing samples of user signals as received in each narrow beam on a continuing repetitive basis. The stored samples are then analyzed in order to select the beam currently providing best reception. If, based on analysis of subsequent samples, a different one of beams 21', 22', 23' or 24' provides best reception (because of user movement or changing transmission conditions) that different beam is coupled to the system receiver 18. Spaced diversity reception is achieved by providing a second multi-beam antenna 20a and enabling the system receiver 18 to choose either of two, or both, inputs. Fail/safe operation is provided by coupling the sector antenna 12 to the system receiver 18 in the absence of coupling of a superior narrow beam signal.

摘要翻译： 在蜂窝式通信系统中，扇区天线12提供具有较低接收增益的扇区的覆盖。 多波束天线20用提供更高增益的多个较窄波束21'，22'，23'和24'覆盖相同的扇区。 多波束天线系统10通过选择目前提供由用户发送的信号的最佳接收的较窄波束21'，22'，23'或24'中的一个来提供更高的增益操作，并将该选择的波束耦合到系统接收机 光束选择通过将每个窄光束顺序地耦合到基于微处理器的控制单元40并且以连续重复的方式存储在每个窄光束中接收的用户信号的样本来实现。 然后分析存储的样本以选择当前提供最佳接收的波束。 如果根据后续采样的分析，不同的光束21'，22'，23'或24'提供了不同光束耦合到系统接收器18的最佳接收（因为用户移动或改变传输条件）。间隔 通过提供第二多波束天线20a并且使系统接收机18能够选择两个或两个输入中的任一个来实现分集接收。 通过在不存在上级窄波束信号的耦合的情况下将扇形天线12耦合到系统接收器18来提供故障/安全操作。

公开(公告)号：US06686892B1

公开(公告)日：2004-02-03

申请号：US10134198

申请日：2002-04-26

申请人： Alfred R. Lopez ,  John F. Pedersen ,  Joseph T. Merenda

发明人： Alfred R. Lopez ,  John F. Pedersen ,  Joseph T. Merenda

IPC分类号： H01Q124

CPC分类号： H01Q9/14 ,  H01Q1/246 ,  H01Q9/16 ,  H01Q9/30

摘要： A whip antenna with switchable operative length provides seven band coverage from 30 to 90 MHZ. A coaxial choke section below a fixed upper antenna element is used for the highest frequency band. A series of four coaxial line sections are switchably coupled below the choke section to increase its operative length for operation in bands of successively lower frequency. One or more lumped constant non-coaxial transmission line sections are switchably coupled below the coaxial line sections for operation in the two lowest frequency bands. Dipole level gain is provided with low reflections loss. Increased height gain is provided by height of operative antenna elements employed at higher frequency bands.

摘要翻译： 具有可切换操作长度的鞭状天线提供30至90MHz的七频带覆盖。 在固定的上天线元件下面的同轴扼流圈用于最高频带。 一系列四个同轴线路部分可切换地耦合在扼流部分下方，以增加其工作长度，以在连续较低频率的频带内工作。 一个或多个集总常数的非同轴传输线部分可切换地耦合在同轴线路部分下方，用于在两个最低频带中操作。 偶极子电平增益具有低反射损耗。 增加的高度增益由在较高频带使用的操作天线元件的高度提供。

公开(公告)号：US06259415B1

公开(公告)日：2001-07-10

申请号：US09350449

申请日：1999-07-09

申请人： Richard J. Kumpfbeck ,  John F. Pedersen ,  Joseph T. Merenda

发明人： Richard J. Kumpfbeck ,  John F. Pedersen ,  Joseph T. Merenda

IPC分类号： H01Q308

CPC分类号： H01Q3/08 ,  H01Q3/26 ,  H01Q13/10

摘要： Low-protrusion array antennas enable reception of satellite signals by airliners in flight. Prior systems using a beam normal to an array face required a 70° array tilt for reception from a satellite at 20° elevation (i.e., tilt angle is complementary angle (90°−&bgr;) of satellite angle (&bgr;) of elevation). Compared to that 70° array tilt for reception from a satellite at 20° elevation, disclosed antennas require an array tilt of only 25° (90°−&bgr;−&agr;=25°). This is accomplished by providing a beam at a fixed acute angle (&agr;) to the array face (e.g. 45 degrees). A side-by-side linear array 16 of slotted waveguide radiator columns 18 provides a pencil beam at a fixed acute angle of 45° to array aperture, for example. By action of tilting motor 42 to mechanically tilt the array of slotted waveguides over a range of ±25° from horizontal, the beam can be scanned from 20° elevation to 70° elevation. Azimuth rotator motor 30 provides 360° beam pointing in azimuth. A television satellite can thus be tracked by an aircraft mounted antenna with only about a 5 inch above-fuselage protrusion.

摘要翻译： 低突起阵列天线使航空公司能够接收卫星信号。 使用垂直于阵列面的光束的现有系统需要70°阵列倾斜以从20°仰角的卫星接收（即，倾角是仰角的卫星角度（β）的互补角（90°-β））。 与20°仰角的卫星接收的70°阵列倾斜相比，所公开的天线需要仅25°（90°-β-α= 25°）的阵列倾斜。 这是通过以阵列面的固定锐角（α）提供光束（例如45度）来实现的。 开槽波导散热器列18的并排线性阵列16例如提供与阵列孔径成45°的固定锐角的笔形束。 通过倾斜马达42的作用，将开槽波导阵列在与水平方向±25°的范围内机械倾斜，梁可以从20°仰角扫描到70°高度。 方位旋转电机30提供360°光束指向方位角。 因此，电视卫星可以由飞机安装的天线跟踪，只有大约5英寸的机身突起。

公开(公告)号：US5907816A

公开(公告)日：1999-05-25

申请号：US881263

申请日：1997-06-24

申请人： Edward M. Newman ,  Alfred R. Lopez ,  Gary A. Schay ,  John F. Pedersen

发明人： Edward M. Newman ,  Alfred R. Lopez ,  Gary A. Schay ,  John F. Pedersen

IPC分类号： H01Q3/26 ,  H01Q3/24 ,  H01Q21/28 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/10 ,  H04B7/26 ,  H04W16/24 ,  H04W16/28 ,  H04B1/16

CPC分类号： H04W16/28 ,  H01Q25/00 ,  H01Q3/24 ,  H04B7/0408 ,  H04B7/0491 ,  H04W16/24

摘要： In a cellular type communication system a sector antenna 12 provides coverage of a sector with a relatively low receive gain. A multi-beam antenna 20 covers the same sector with a plurality of narrower beams 21', 22', 23' and 24' providing higher gain. A multi-beam antenna system 10 provides higher gain operation by selecting the one of the narrower beams 21', 22', 23' or 24' currently providing best reception of a signal transmitted by a user and coupling that selected beam to a system receiver 18. Beam selection is accomplished by sequentially coupling each narrow beam to a microprocessor based control unit 40 and storing samples of user signals as received in each narrow beam on a continuing repetitive basis. The stored samples are then analyzed in order to select the beam currently providing best reception.

摘要翻译： 在蜂窝式通信系统中，扇区天线12提供具有较低接收增益的扇区的覆盖。 多波束天线20用提供更高增益的多个较窄波束21'，22'，23'和24'覆盖相同的扇区。 多波束天线系统10通过选择目前提供由用户发送的信号的最佳接收的较窄波束21'，22'，23'或24'中的一个来提供更高的增益操作，并将该选择的波束耦合到系统接收机 光束选择通过将每个窄光束顺序地耦合到基于微处理器的控制单元40并且以连续重复的方式存储在每个窄光束中接收的用户信号的样本来实现。 然后分析存储的样本以选择当前提供最佳接收的波束。

公开(公告)号：US06229495B1

公开(公告)日：2001-05-08

申请号：US09369778

申请日：1999-08-06

申请人： Alfred R. Lopez ,  Richard J. Kumpfbeck ,  John F. Pedersen

发明人： Alfred R. Lopez ,  Richard J. Kumpfbeck ,  John F. Pedersen

IPC分类号： H01Q904

CPC分类号： H01Q9/32 ,  H01Q5/40 ,  H01Q5/50

摘要： A dual-radiator whip antenna to operate over a 30 to 450 MHz frequency band includes a high frequency dipole above a low frequency monopole. The outer conductor (30) of a coaxial line is configured to operate as a monopole. Above the upper terminus of the outer conductor, an extension (32a) of the inner conductor (32) is configured as the upper arm of a dipole. An upper length of the outer conductor also functions as the lower dipole arm. With a single antenna port (13), a diplexer and other feed elements separate signals into high and low frequency bands respectively coupled to the dipole and monopole radiators. Increased high frequency range results from positioning of the center of radiation of the dipole above the monopole.

摘要翻译： 在30至450 MHz频带上工作的双辐射鞭状天线包括低频单极之上的高频偶极子。 同轴线的外导体（30）构造成作为单极子工作。 在外部导体的上端之上，内部导体（32）的延伸部（32a）被构造为偶极子的上臂。 外部导体的上部长度也用作下部偶极臂。 使用单个天线端口（13），双工器和其他馈电元件将信号分离成分别耦合到偶极子和单极辐射器的高频和低频带。 增加的高频范围是由单极子上方的偶极子的辐射中心的定位产生的。