公开(公告)号：US5744972A

公开(公告)日：1998-04-28

申请号：US627638

申请日：1996-04-05

申请人： Vladislav Korenivski ,  Zhengxiang Ma ,  Paul Matthew Mankiewich ,  Paul Anthony Polakos ,  Robert Bruce van Dover

发明人： Vladislav Korenivski ,  Zhengxiang Ma ,  Paul Matthew Mankiewich ,  Paul Anthony Polakos ,  Robert Bruce van Dover

IPC分类号： G01R33/12 ,  G01N27/72

CPC分类号： G01R33/1223

摘要： The device has a single strip having a first end, a second end, a length and a width. The first end of the strip is curved toward the second end of the strip to form a loop having a height. The length is approximately 10 mm, the width is approximately 5-8 mm, and the height is approximately 0.8-1.2 mm. The loop is preferably fabricated from copper. The loop is mounted directly to a test instrument such as a computer controlled impedance analyzer or network analyzer. The test instrument measures the inductance and resistance of the loop with no thin film sample placed therein, and then measures the inductance and resistance of the loop containing the sample under test. From these measurements, the device ultimately derives the permeability of the sample under test. The method for measuring the complex permeability of thin films at ultra-high frequencies includes the steps of recording the residual inductance and resistance for the loop empty; measuring the total inductance and resistance for the loop loaded with the sample under test; determining the change in resistance by subtracting the resistance of the loop without any sample from the resistance when the loop is loaded with the sample under test; determining the change in inductance by subtracting the inductance of the loop without any sample from the inductance when the loop is loaded with the sample under test; and calculating permeability.

摘要翻译： 该装置具有单条，其具有第一端，第二端，长度和宽度。 条带的第一端朝向带的第二端弯曲以形成具有高度的环。 长度约为10mm，宽度约为5-8mm，高度约为0.8-1.2mm。 该环优选由铜制成。 该回路直接安装在诸如计算机控制的阻抗分析仪或网络分析仪之类的测试仪器上。 测试仪器测量没有薄膜样品的环路的电感和电阻，然后测量包含被测试样品的回路的电感和电阻。 从这些测量中，该装置最终导出被测试样品的渗透性。 用于测量超高频薄膜复合磁导率的方法包括记录剩余电感和电阻为空的步骤; 测量负载待测试样品的环路的总电感和电阻; 当环路装载被测试样品时，通过从电阻中减去没有任何样品的环路的电阻来确定电阻的变化; 当环路加载被测试样品时，通过从电感中减去没有任何样本的环路的电感来确定电感的变化; 并计算渗透率。

公开(公告)号：US06624694B2

公开(公告)日：2003-09-23

申请号：US09852990

申请日：2001-05-10

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H03F368

CPC分类号： H03F3/602 ,  H03F3/211

摘要： A method of producing an amplified signal decomposes a signal into at least a first part and second part using at least one amplitude threshold. The first part includes a portion of the signal with a lower peak-to-average power ratio than the signal based on the amplitude threshold. The second part includes a portion of the signal beyond the amplitude threshold. At least the first part and the second part are amplified to produce an amplified first part and amplified second part, which are combined to produce an amplified signal.

摘要翻译： 产生放大信号的方法使用至少一个振幅阈值将信号分解为至少第一部分和第二部分。 第一部分包括具有比基于振幅阈值的信号更低的峰值与平均功率比的信号的一部分。 第二部分包括信号超过振幅阈值的一部分。 至少第一部分和第二部分被放大以产生放大的第一部分和放大的第二部分，其被组合以产生放大的信号。

公开(公告)号：US07680075B2

公开(公告)日：2010-03-16

申请号：US11435664

申请日：2006-05-17

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H04W4/00

CPC分类号： H04W48/08 ,  H04B1/7083 ,  H04B2201/70702 ,  H04J13/0029 ,  H04W48/16

摘要： The identification of wireless communication base stations in a region of high base station density is effected using a specific identification signal pattern transmitted by the base stations. In particular, each base station transmits a signal having a pattern with at least two time phase shifts relative to at least one time benchmark. The combination of these phase shifts allows identification of the transmitting base station. Since a plurality of phase shifts leads to a concomitantly larger number of phase shift combinations, the capacity to identify base stations is enlarged.

摘要翻译： 使用由基站发送的特定识别信号模式来实现高基站密度区域中的无线通信基站的识别。 具体地，每个基站相对于至少一个时间基准来发送具有至少两个时间相移的模式的信号。 这些相移的组合允许识别发射基站。 由于多个相移导致相对较大数量的相移组合，所以识别基站的容量被扩大。

公开(公告)号：US20070268853A1

公开(公告)日：2007-11-22

申请号：US11435664

申请日：2006-05-17

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H04Q7/00

CPC分类号： H04W48/08 ,  H04B1/7083 ,  H04B2201/70702 ,  H04J13/0029 ,  H04W48/16

摘要： The identification of wireless communication base stations in a region of high base station density is effected using a specific identification signal pattern transmitted by the base stations. In particular, each base station transmits a signal having a pattern with at least two time phase shifts relative to at least one time benchmark. The combination of these phase shifts allows identification of the transmitting base station. Since a plurality of phase shifts leads to a concomitantly larger number of phase shift combinations, the capacity to identify base stations is enlarged.

摘要翻译： 使用由基站发送的特定识别信号模式来实现高基站密度区域中的无线通信基站的识别。 具体地，每个基站相对于至少一个时间基准来发送具有至少两个时间相移的模式的信号。 这些相移的组合允许识别发射基站。 由于多个相移导致相对较大数量的相移组合，所以识别基站的容量被扩大。

公开(公告)号：US06654427B1

公开(公告)日：2003-11-25

申请号：US09363329

申请日：1999-07-28

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H04L2503

CPC分类号： H03F1/3241 ,  H03F2201/3236 ,  H04B1/0475

摘要： A signal notching system reduces signal peaks by notching the peak of a signal above a threshold to produce a notched signal. The notched signal is then filtered to produce a resulting signal with a reduced peak amplitude. For example, in an implementation where the signal is represented by signal samples, the peak notching system first locates a peak sample that is beyond a threshold, such as a sample representing a positive peak sample of a peak above the threshold. Once a peak sample is located, the peak notching system adjusts the peak sample by an amount which is a function of the amount that the peak sample is beyond the threshold, effectively creating a notched signal with a one sample notch at the peak. The peak notching system filters the notched signal to fill in the notch to produce a signal with a reduced peak.

摘要翻译： 信号切口系统通过在高于阈值的情况下切断信号的峰值来减小信号峰值，以产生陷波信号。 然后对切口信号进​​行滤波以产生具有减小的峰值幅度的结果信号。 例如，在信号由信号样本表示的实施例中，峰值切口系统首先定位超过阈值的峰值样本，例如表示高于阈值的峰值的正峰值样本的样本。 一旦找到峰值样本，峰值切口系统将峰值采样值调整为峰值采样超过阈值的量的函数，有效地创建峰值处的一个采样缺口的缺口信号。 峰值切口系统对陷波信号进行滤波以填充陷波，产生峰值降低的信号。

公开(公告)号：US6114758A

公开(公告)日：2000-09-05

申请号：US138102

申请日：1998-08-21

申请人： Alfredo Carlos Anderson ,  Zhengxiang Ma ,  Paul Anthony Polakos ,  Hui Wu

发明人： Alfredo Carlos Anderson ,  Zhengxiang Ma ,  Paul Anthony Polakos ,  Hui Wu

IPC分类号： H01P1/203 ,  H01L23/02 ,  H01L23/10 ,  H01L23/52

CPC分类号： H01P1/203

摘要： The disclosed superconducting multipole RF filter comprises a multiplicity of coupled circular disk resonators designed for operation in the TM 010 mode. The disk resonators are arranged in a co-axial stack, with a circular metal spacer sandwiched between any two neighboring disk resonators. Each metal spacer has a central through-aperture, with a conductive member disposed in the through-aperture and electrically connecting the two neighboring disk resonators that are sandwiching a given metal spacer. A disk resonator comprises two circular members, each circular member comprising a circular dielectric substrate, exemplarily a LaAlO.sub.3 wafer. Superconducting layers (typically YBCO) are disposed on each major surface of the substrate. The two members are joined together such that conductive layers (typically gold) electrically connect the two outside superconducting layers. The disclosed RF filter has good power handling capability, is compact, has good heat removal and relatively simple tuning. It can, for instance, be advantageously used as transmit filter in base stations of a wireless communication system.

摘要翻译： 所公开的超导多极RF滤波器包括设计用于在TM 010模式下操作的多个耦合的圆盘谐振器。 磁盘谐振器被布置在同轴的堆叠中，其中圆形金属间隔件夹在任何两个相邻的磁盘谐振器之间。 每个金属间隔物具有中心通孔，导电构件设置在通孔中并电连接夹着给定金属间隔物的两个相邻盘谐振器。 盘式谐振器包括两个圆形构件，每个圆形构件包括圆形电介质衬底，例如LaAlO 3晶片。 超导层（通常为YBCO）设置在基板的每个主表面上。 两个构件连接在一起，使得导电层（通常为金）电连接两个外部超导层。 所公开的RF滤波器具有良好的功率处理能力，紧凑，具有良好的散热和相对简单的调谐。 例如，它可以有利地用作无线通信系统的基站中的发射滤波器。

公开(公告)号：US07054384B1

公开(公告)日：2006-05-30

申请号：US09631885

申请日：2000-08-04

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H04L27/04

CPC分类号： H01Q1/242 ,  H01Q21/29 ,  H03F1/3229 ,  H03F3/245 ,  H03F3/602 ,  H04B7/0615 ,  Y02D70/444

摘要： A method and transmitter for amplifying at least first and second diversity-encoded signals, where each of the first and second diversity-encoded signals may represent information of a first signal to be transmitted using transmit diversity. Amplification of the first and second diversity-encoded signals may be shared between at least two amplifiers, and amplification for a second signal, to be amplified and transmitted without using transmit diversity, may be shared between the at least two amplifiers.

摘要翻译： 一种用于放大至少第一和第二分集编码信号的方法和发射机，其中第一和第二分集编码信号中的每一个可以表示使用发射分集发射的第一信号的信息。 第一和第二分集编码信号的放大可以在至少两个放大器之间共享，并且在不使用发射分集的情况下放大和发射的第二信号的放大可以在至少两个放大器之间共享。

公开(公告)号：US06859643B1

公开(公告)日：2005-02-22

申请号：US09631886

申请日：2000-08-04

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H03F1/32 ,  H03F3/60 ,  H04B1/04 ,  H04B7/005 ,  H04B1/02 ,  H04B1/38

CPC分类号： H04W52/42 ,  H03F1/3241 ,  H03F3/602 ,  H04B1/0475

摘要： The technique of amplifier sharing is implemented in a system designed to accommodate transmit diversity. In one embodiment of the invention, the amplifiers are shared 1) to amplify a first and a second diversity-encoded signal, each of which represents the information a first signal that is to be transmitted using transmit diversity, and 2) to amplify a second signal to be transmitted without using transmit diversity. The first and second diversity-encoded signals are used to form a first and a second composite signal. Each composite signal is amplified in a different one of two power amplifiers. Each amplified composite signal is then used to form an amplified first diversity-encoded signal and an amplified second diversity-encoded signal. The first and second composite signals can also be formed using the second signal. Each composite signal is then amplified in a different one of the two power amplifiers and the two amplified composite signals are used to form an amplified second signal. In another embodiment of the invention, the first and second composite signals can be formed in the digital domain. Each composite signal is digitally pre-distorted and then modulated onto a transmission frequency signal, such as an RF signal. Each pre-distorted composite signal is then amplified in the respective amplifier.

摘要翻译： 放大器共享的技术在设计用于适应发射分集的系统中实现。 在本发明的一个实施例中，放大器被共享1）以放大第一和第二分集编码信号，每个信号代表信息是要使用发射分集发送的第一信号，以及2）放大第二个 信号在不使用发射分集的情况下传输。 第一和第二分集编码信号用于形成第一和第二复合信号。 每个复合信号在两个功率放大器中的不同的一个放大器中被放大。 然后，每个放大的复合信号用于形成放大的第一分集编码信号和放大的第二分集编码信号。 第一和第二复合信号也可以使用第二信号形成。 然后，每个复合信号在两个功率放大器中的不同的一个放大器中放大，并且两个放大的复合信号用于形成放大的第二信号。 在本发明的另一个实施例中，第一和第二复合信号可以形成在数字域中。 每个复合信号被数字预失真，然后调制到诸如RF信号的传输频率信号上。 然后在相应的放大器中对每个预失真的复合信号进行放大。

公开(公告)号：US06292054B1

公开(公告)日：2001-09-18

申请号：US09444319

申请日：1999-11-19

申请人： Zhengxiang Ma ,  Paul Anthony Polakos

发明人： Zhengxiang Ma ,  Paul Anthony Polakos

IPC分类号： H03F368

CPC分类号： H03F3/602 ,  H03F3/211

摘要： A signal amplification system involves decomposing a signal into two or more parts, amplifying the parts and then combining the amplified parts to produce the amplified signal. The decomposition can be done such that the resulting parts have characteristics that are amenable to efficient amplification. For example, decomposition of the signal to be amplified can be done using at least one threshold. The first part of the signal to be amplified can be formed by the portion of the signal within the threshold. As such, because the first part forms a signal with a lower PAR, the first part of the signal can be amplified more efficiently than the original signal. The second part of the signal can be formed by the portion of the original signal beyond the threshold. Because the second part is mostly zero, the second part can also be amplified efficiently, for example with a class C type amplifier which does not dissipate any energy when the input signal is zero.

摘要翻译： 信号放大系统包括将信号分解为两个或更多个部分，放大部分，然后组合放大的部分以产生放大的信号。 可以进行分解，使得所得部分具有适于高效扩增的特征。 例如，可以使用至少一个阈值来分解待放大的信号。 要放大的信号的第一部分可以由阈值内部的信号部分形成。 因此，由于第一部分形成具有较低PAR的信号，所以可以比原始信号更有效地放大信号的第一部分。 信号的第二部分可以由原始信号的部分超过阈值形成。 因为第二部分大部分为零，所以第二部分也可以被有效地放大，例如，当输入信号为零时不会耗散任何能量的C类放大器。

公开(公告)号：US09002291B2

公开(公告)日：2015-04-07

申请号：US13572595

申请日：2012-08-10

申请人： Shaofeng Xu ,  Zhengxiang Ma ,  Siqing Ye ,  Wei Wang ,  Pengfei Luo

发明人： Shaofeng Xu ,  Zhengxiang Ma ,  Siqing Ye ,  Wei Wang ,  Pengfei Luo

IPC分类号： H04B17/00 ,  H04B1/04

CPC分类号： H04B1/0466 ,  H04B17/103

摘要： A standing wave detection method, a standing wave detection apparatus, and a base station are disclosed. The method includes collecting, a feedback signal from a feedback path of a base station which uses a baseband multi-tone signal as a transmission signal; performing calibration on the feedback signal by using stored calibration data to obtain a reflected signal in the feedback signal; and obtaining a standing wave detection value according to the transmission signal and the reflected signal that is in the feedback signal.

摘要翻译： 公开了驻波检测方法，驻波检测装置和基站。 该方法包括从使用基带多音调信号的基站的反馈路径收集反馈信号作为发送信号; 通过使用存储的校准数据对反馈信号执行校准以获得反馈信号中的反射信号; 并根据发送信号和反馈信号中的反射信号获得驻波检测值。