公开(公告)号：US06714769B2

公开(公告)日：2004-03-30

申请号：US10328663

申请日：2002-12-23

申请人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

发明人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

IPC分类号： H03C702

CPC分类号： H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

摘要： Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

摘要翻译： 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 天线选择对于上行链路和下行链路具有更大的灵活性和适用性，其中优先给予接收更好质量信号的天线。 在每个时隙期间进行测量，以确定要以更好的质量信号给予天线的加权。 提供技术和装置以在从时隙到单个符号的间隔范围内进行测量，例如，选择最佳信号，本文所描述的技术可以被单独使用，并且在一些情况下被组合以在效率上接收额外的益处。

公开(公告)号：US06539209B1

公开(公告)日：2003-03-25

申请号：US09580775

申请日：2000-05-30

申请人： Miguel Dajer ,  Peter Keith LaConte ,  Harvey Rubin

发明人： Miguel Dajer ,  Peter Keith LaConte ,  Harvey Rubin

IPC分类号： H03C702

CPC分类号： H04B7/0613 ,  H04B7/0491

摘要： A single base station supports the non-diversity transmission of a first digital signal type and the diversity transmission of a second digital signal type. The base station includes primary channel boards for modulating and encoding a first digital signal type and secondary channel boards for modulating and encoding a second digital signal type. A first group of transmit radio modules accept the first digital signal type and the second digital signal type and provides a composite electromagnetic output signal. Each transmit radio module is associated with a different sector. A second group of transmit radio modules accept the second digital signal type from secondary channel boards and provide a diverse electromagnetic output signal for complementing the composite electromagnetic output signal.

摘要翻译： 单个基站支持第一数字信号类型的非分集传输和第二数字信号类型的分集传输。 基站包括用于调制和编码第一数字信号类型的主信道板和用于调制和编码第二数字信号类型的次信道板。 第一组发射无线电模块接受第一数字信号类型和第二数字信号类型并提供复合电磁输出信号。 每个发射无线电模块与不同的扇区相关联。 第二组发射无线电模块接受来自次级信道板的第二数字信号类型，并提供用于补充复合电磁输出信号的多种电磁输出信号。

公开(公告)号：US06549760B1

公开(公告)日：2003-04-15

申请号：US09295861

申请日：1999-04-21

申请人： Yasuyuki Honma ,  Yukinori Hirai

发明人： Yasuyuki Honma ,  Yukinori Hirai

IPC分类号： H03C702

CPC分类号： H04B7/0808

摘要： A communications device for communicating by selecting a predetermined antenna from a plurality of antennae has a first and a second switch, each switch comprising one moving contact and two fixed contacts. The moving contact of the first switch is connected to a first antenna, the first fixed contact of the first switch is connected to a transmitter circuit, the second fixed contact of the first switch is connected to the first fixed contact of the second switch, the moving contact of the second switch is connected to a receiver circuit, and the second fixed contact of the second switch is connected to a second antenna. By switching as appropriate between antennae the attenuation of transmission and reception signals caused by the switches can be reduced.

摘要翻译： 用于通过从多个天线中选择预定天线进行通信的通信设备具有第一和第二开关，每个开关包括一个移动触点和两个固定触点。 第一开关的移动触点连接到第一天线，第一开关的第一固定触点连接到发送器电路，第一开关的第二固定触点连接到第二开关的第一固定触点， 第二开关的移动触点连接到接收器电路，并且第二开关的第二固定触点连接到第二天线。 通过适当地在天线之间进行切换，可以减少由开关引起的发送和接收信号的衰减。

公开(公告)号：US06741838B2

公开(公告)日：2004-05-25

申请号：US09736427

申请日：2000-12-15

申请人： Ichiro Tsujimoto

发明人： Ichiro Tsujimoto

IPC分类号： H03C702

CPC分类号： H04B7/0613 ,  H04B7/0865

摘要： A transmission side device combines two independent transmission signals (S1, S2) together to produce two combined signals, i.e., a sum signal (S1+S2) and a difference signal (S1−S2), and transmits the produced signals over two radio wave propagation paths, respectively. After the sum signal and the difference signal are received by the reception side device, the sum signal and the difference signal, as received, are subjected to an AGC control operation and a complex-level multiplication operation with a weighting coefficient based on correlation control, and then separated into two, restored, independent signals.

摘要翻译： 传输侧设备将两个独立的传输信号（S1，S2）组合在一起以产生两个组合信号，即和信号（S1 + S2）和差分信号（S1-S2），并且通过两个无线电波 传播路径。 在接收侧装置接收到和信号和差分信号之后，如接收到的和信号和差分信号经受基于相关控制的加权系数的AGC控制操作和复电平乘法运算， 然后分为两个，恢复，独立的信号。

公开(公告)号：US06434199B1

公开(公告)日：2002-08-13

申请号：US09175790

申请日：1998-10-20

申请人： Ryan M. Desrosiers ,  Craig A. Hornbuckle

发明人： Ryan M. Desrosiers ,  Craig A. Hornbuckle

IPC分类号： H03C702

CPC分类号： H04L27/2064 ,  H03D7/14 ,  H04L27/362

摘要： A 2N-QAM macrocell for generating constellations with 2N symbols, where N is the number of bits in the digital data word [D0:DN−1] applied to the macrocell. Since the digital data word is applied directly to the macrocell, the need for a digital mapping chip is thus eliminated thus reducing the complexity and power consumption of the circuit. An important aspect of the invention is that the 2N-QAM macrocell is amenable to being fabricated as a single microwave monolithic integrated circuit (MMIC) or integrated circuit (IC). As such, a QAM circuit can be formed from two MMICs; the 2N-QAM macrocell and a quadrature hybrid phase shifting device formed on separate MMIC to form a 2N-QAM circuit or one MMIC containing both the 0/90 degree phase shifter and the 2N-QAM circuit. The phase shifting device is used to provide the in-phase and quadrature phase components of the local oscillator signal. Since the QAM circuit in accordance with the present invention only requires one or two MMIC chips; the complexity and cost of the circuit is reduced and the need for tuning is obviated. The 2N-QAM macrocell may be formed from Gilbert transconductance multipliers with GaAs heterojunction bipolar transistor (HBT) technology, thus providing maximum symbol rates in excess of 1 Gsps.

摘要翻译： 用于生成具有2N个符号的星座的2N-QAM宏小区，其中N是应用于宏小区的数字数据字[D0：DN-1]中的比特数。 由于数字数据字直接应用于宏单元，因此消除了数字映射芯片的需要，从而降低了电路的复杂性和功耗。 本发明的一个重要方面是2N-QAM宏单元可以被制造成单个微波单片集成电路（MMIC）或集成电路（IC）。 因此，可以由两个MMIC形成QAM电路; 2N-QAM宏单元和正交混合相移装置形成在单独的MMIC上以形成2N-QAM电路或一个包含0/90度移相器和2N-QAM电路的MMIC。 相移装置用于提供本地振荡器信号的同相和正交相位分量。 由于根据本发明的QAM电路仅需要一个或两个MMIC芯片; 降低了电路的复杂性和成本，并且消除了对调谐的需要。 2N-QAM宏单元可以由具有GaAs异质结双极晶体管（HBT）技术的吉尔伯特跨导乘法器形成，从而提供超过1Gsps的最大符号速率。

公开(公告)号：US06181920B2

公开(公告)日：2001-01-30

申请号：US08954103

申请日：1997-10-20

申请人： Paul W. Dent ,  Gregory A. O'Neill, Jr.

发明人： Paul W. Dent ,  Gregory A. O'Neill, Jr.

IPC分类号： H03C702

CPC分类号： H04B7/10

摘要： A transmitter provides a radio wave with selectable polarization. The transmitter includes antenna feeds that generate orthogonal radio waves having non-linear polarizations that corresponds to the selectable phase relationships of a first and a second modulating signals. A spacial combination of the non-linear radio waves to produce a linearly polarized radio wave that has an orientation corresponding to a selected phase relationship.

摘要翻译： 发射机提供具有可选极化的无线电波。 发射机包括产生具有对应于第一和第二调制信号的可选择相位关系的非线性偏振的正交无线电波的天线馈送。 非线性无线电波的空间组合以产生具有对应于所选相位关系的取向的线偏振无线电波。