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1. 发明申请

US20040203858A1 System for GSM interference cancelling 失效
标题翻译： GSM干扰消除系统
公开(公告)号：US20040203858A1
公开(公告)日：2004-10-14
申请号：US10161441
申请日：2002-06-03
申请人： Andrew Corporation
发明人： Gregory A. Maca
IPC分类号： H04Q007/20
CPC分类号： H04B1/126
摘要： A system for determining the location of a device in a wireless communication network includes at least one antenna for transmitting signals in a wireless communication network. A monitoring unit, located proximate to the at least one antenna, is operable for receiving, as a first input, signals transmitted by the antenna and signals from a device in the network and for receiving, as a second input, signals to be transmitted by the antenna. The monitoring unit includes at least one cancellation stage for modifying the second input and combining the modified second input with the first input to reduce the effect of the transmitted antenna signals on the monitoring unit first input.
摘要翻译：用于确定无线通信网络中的设备的位置的系统包括用于在无线通信网络中发送信号的至少一个天线。位于所述至少一个天线附近的监测单元可操作用于接收由天线发送的信号和来自网络中的设备的信号作为第一输入，并且用于接收作为第二输入的信号，以由天线。监视单元包括至少一个用于修改第二输入并将经修改的第二输入与第一输入相结合的取消级，以减少发送的天线信号对监视单元第一输入的影响。

2. 发明申请

US20040203704A1 Indoor wireless voice and data distribution system 有权
标题翻译：室内无线语音和数据分发系统
公开(公告)号：US20040203704A1
公开(公告)日：2004-10-14
申请号：US10166277
申请日：2002-06-10
申请人： Andrew Corporation
发明人： Kevin Ommodt , Matthew Melester , Gregory A. Maca , Donald Stone
IPC分类号： H04Q007/20
CPC分类号： H04W4/04 , H04W88/085
摘要： A wireless voice and data system for improving coverage in an enclosed area includes a hub device for transceiving RF signals with a signal source positioned generally removed from an enclosed area. The hub device includes voice hardware for processing voice signals, data hardware for processing data signals, and combining hardware for combining and separating voice signals and data signals in the hub device. A remote access point device for transceiving signals with customer equipment includes voice hardware for processing voice signals, data hardware for processing data signals, and combining hardware for combining and separating voice signals and data signals in the remote access point. An optical fiber system is coupled between the hub device and the remote access point device and is operable for modulating and demodulating the combined voice and data signals for communicating between the hub device and remote access point device.
摘要翻译：用于改善封闭区域中的覆盖的无线语音和数据系统包括用于收发RF信号的集线器设备，其中信号源通常从封闭区域移除。集线器设备包括用于处理语音信号的语音硬件，用于处理数据信号的数据硬件，以及用于组合和分离集线器设备中的语音信号和数据信号的硬件。用于用客户设备收发信号的远程接入点设备包括用于处理语音信号的语音硬件，用于处理数据信号的数据硬件，以及组合和分离远程接入点中的语音信号和数据信号的硬件。光纤系统耦合在集线器设备和远程接入点设备之间，并且可操作用于调制和解调用于集线器设备和远程接入点设备之间的通信的组合语音和数据信号。

3. 发明申请

US20040196115A1 Variable coupling factor Directional Coupler 失效
标题翻译：可变耦合因子方向耦合器
公开(公告)号：US20040196115A1
公开(公告)日：2004-10-07
申请号：US10249392
申请日：2003-04-04
申请人： ANDREW CORPORATION
发明人： Dan Fallon , Kerry Phelps
IPC分类号： H01P005/18
CPC分类号： H01P5/04
摘要： A variable coupling factor directional coupler having a variable aperture positioned between a transmission line section and a coupling conductor connected at either end to a center conductor of a pair of connectors. The coupling factor of an RF signal in the transmission line section to the coupling conductor may be adjusted by linear movement of a gap plate to open or close the aperture. Alternatively, the coupling conductor may be located within a slotted tube. As the slotted tube is rotated, the slotted portion of the tube opens or closes the aperture. The position of the inner conductor of the coupling conductor with respect to a grounded sidewall can be adjusted to change the coupled line impedance in order to optimize the coupler directivity.
摘要翻译：一种可变耦合因子定向耦合器，具有位于传输线部分和耦合导体之间的可变孔径，该耦合导体在任一端连接到一对连接器的中心导体。可以通过间隙板的线性运动来调整传输线部分中的RF信号到耦合导体的耦合系数，以打开或关闭光圈。或者，耦合导体可以位于开槽管内。当开槽管旋转时，管的开槽部分打开或关闭孔。可以调整耦合导体的内部导体相对于接地侧壁的位置以改变耦合线路阻抗，以便优化耦合器方向性。

4. 发明申请

US20040189381A1 High efficiency amplifier and method of designing same 有权
标题翻译：高效率放大器及其设计方法
公开(公告)号：US20040189381A1
公开(公告)日：2004-09-30
申请号：US10795055
申请日：2004-03-05
申请人： Andrew Corporation
发明人： Edward Vincent Louis
IPC分类号： H03F003/68
CPC分类号： H03F1/0288 , H03F1/0266 , H03F3/602 , H03F2200/18 , H03F2200/198
摘要： An amplifier includes a main amplifier circuit and at least one auxiliary amplifier circuit. Portions of an RF signal to be amplified are delivered to the main and auxiliary amplifiers. The auxiliary amplifier circuit is selectively operable to operate in combination with the main amplifier circuit, such as based on the level of the RF signal. At least one hybrid coupler circuit has input ports coupled with outputs of the main amplifier circuit and auxiliary amplifier circuit. The hybrid coupler circuit is operable to combine amplifier circuit output signals at a coupler first output port. A coupler second output port is terminated with one of an electrical short and an electrical open circuit.
摘要翻译：放大器包括主放大器电路和至少一个辅助放大器电路。要放大的RF信号的一部分被传送到主放大器和辅助放大器。辅助放大器电路可选择性地操作以与主放大器电路组合操作，例如基于RF信号的电平。至少一个混合耦合器电路具有与主放大器电路和辅助放大器电路的输出耦合的输入端口。混合耦合器电路可操作以在耦合器第一输出端口处组合放大器电路输出信号。耦合器第二输出端口用电短路和电开路中的一个端接。

5. 发明申请

US20040179587A1 Signal sample acquisition techniques 失效
公开(公告)号：US20040179587A1
公开(公告)日：2004-09-16
申请号：US10783517
申请日：2004-02-20
申请人： Andrew Corporation
发明人： Peter Blakeborough Kenington , Jonathan Paul Rogers , John Bishop , Antony James Smithson
IPC分类号： H04L005/16
CPC分类号： H03F1/3294 , H03F1/3247 , H03F1/3282 , H03F2200/102 , H03F2201/3233 , H04L27/368
摘要： Sample acquisition apparatus for sampling first and second signals within a signal processing arrangement, said apparatus comprising a sampler for capturing sections of the waveforms of both the first and second signals, a switch for alternating correction of the sampler to a point in the arrangement where said first signal can be sampled and a point in said arrangement where said second signal can be sampled and a timer for timing the operation of the switch to cause the sampler to capture a first waveform section of said first signal and a second waveform section of said second signal, wherein said second signal is responsive to said first signal and the timing of said switch is such that said second section comprises a portion that has been generated in response to said first section.

6. 发明申请

US20040119534A1 MODEL-BASED FEED-FORWARD LINEARIZATION OF AMPLIFIERS 有权
标题翻译：基于模型的放大器的前馈线性化
公开(公告)号：US20040119534A1
公开(公告)日：2004-06-24
申请号：US10322953
申请日：2002-12-18
申请人： Andrew Corporation, a Delaware corporation
发明人： Rajiv Chandrasekaran
IPC分类号： H03F001/26
CPC分类号： H03F1/3229 , H03F1/3247
摘要： The signal generated by a high-power amplifier (HPA) operating in its non-linear region is linearized by an amplifier circuit using feed-forward compensation in which an auxiliary channel relies on a model of the HPA to generate an auxiliary signal that is combined with the HPA output to generate an amplified linearized output signal. The amplifier circuit may be implemented with a pre-distorter in the main amplifier channel to linearize the HPA using both pre-compensation and feed-forward compensation. Using the HPA model in the auxiliary channel enables the auxiliary signal to be generated without directly relying on the HPA output. This enables the amplifier circuit to be implemented without having to delay the high-power HPA output signal prior to being synchronously combined with the auxiliary signal. In preferred embodiments, the auxiliary channel signal is generated using a relatively low-power amplifier operating in its linear region.
摘要翻译：由在其非线性区域中工作的高功率放大器（HPA）产生的信号由使用前馈补偿的放大器电路线性化，其中辅助通道依赖于HPA的型号以产生组合的辅助信号 HPA输出端产生放大的线性化输出信号。放大器电路可以用主放大器通道中的预失真器来实现，以使用预补偿和前馈补偿来线性化HPA。在辅助通道中使用HPA模型可以生成辅助信号，而不需要直接依靠HPA输出。这使得能够实现放大器电路，而不必在与辅助信号同步组合之前延迟高功率HPA输出信号。在优选实施例中，使用在其线性区域中工作的相对低功率放大器来产生辅助信道信号。

7. 发明申请

US20040066333A1 Active antenna with interleaved arrays of antenna elements 失效
标题翻译：有源天线，天线元素交错排列
公开(公告)号：US20040066333A1
公开(公告)日：2004-04-08
申请号：US10256860
申请日：2002-09-27
申请人： Andrew Corporation
发明人： Mano D. Judd , Thomas A. Bachman II
IPC分类号： H01Q021/00
CPC分类号： H01Q21/0006 , H01Q21/22
摘要： An antenna has multiple arrays of radiating elements and includes a plurality of single channel power amplifiers, with each amplifier electrically connected with an array. The radiating elements of the arrays are interleaved so that radiation from the arrays combines at a distance from the antenna.
摘要翻译：天线具有多个辐射元件阵列，并且包括多个单通道功率放大器，每个放大器与阵列电连接。阵列的辐射元件被交错，使得来自阵列的辐射在距天线一定距离处组合。

8. 发明申请

US20040061654A1 Adjustable beamwidth and azimuth scanning antenna with dipole elements 有权
公开(公告)号：US20040061654A1
公开(公告)日：2004-04-01
申请号：US10400886
申请日：2003-03-27
申请人： Andrew Corporation
发明人： David B. Webb , Jonathon C. Veihl , Michael D. Thomas
IPC分类号： H01Q019/06
CPC分类号： H01Q21/061 , H01Q1/246 , H01Q3/32 , H01Q21/24 , H01Q21/26 , H01Q25/002
摘要： An antenna system includes a plurality of cascading power dividers that work in conjunction with a plurality of mechanical phase shifters to vary a beamwidth and/or an azimuth scan angle of a beam that radiates from active columns. Each phase shifter has an independent remotely controlled drive and is directly electrically connected to a respective radiating column. The radiating columns include cross dipole antenna elements.

9. 发明申请

US20040025691A1 Pressure equalization apparatus and methods 有权
公开(公告)号：US20040025691A1
公开(公告)日：2004-02-12
申请号：US10213640
申请日：2002-08-07
申请人： Andrew Corporation
发明人： Troy Inslee Vanderhoof , Brian Douglas Cross , John Michael Curry , Gordon L. Treichler
IPC分类号： B01D053/02
CPC分类号： H01Q1/02 , B01D53/02 , B01D53/261 , H05K5/068
摘要： A pressure equalization apparatus for decreasing or eliminating the pressure differential between the internal pressure within a sealed system and the external ambient air pressure while concurrently sustaining a dry atmosphere inside the enclosure. The apparatus includes a variable volume chamber coupled in fluid communication with the sealed system and adapted to change its volume as in relation to the pressurization of the sealed system. Gas flowing between the sealed system and the variable volume chamber, as the pressurization changes, is exposed to an adsorbent operative for dehumidifying the exchanged gas.

10. 发明申请

US20030030503A1 Method of and apparatus for connecting waveguides 有权
公开(公告)号：US20030030503A1
公开(公告)日：2003-02-13
申请号：US09924645
申请日：2001-08-07
申请人： Andrew Corporation
发明人： Jeff Paynter , Gary Frigo
IPC分类号： H01P005/02
CPC分类号： H01P5/082
摘要： A waveguide connector for connecting an elliptical waveguide to a rectangular waveguide includes an elliptical-waveguide-receiving portion adapted to receive an end portion of an elliptical waveguide. The waveguide connector also includes a rectangular-waveguide-connecting portion adapted to connect to an end portion of a rectangular waveguide. After the end portion of the elliptical waveguide has been received in the elliptical-waveguide-receiving portion of the waveguide connector, the elliptical waveguide and the waveguide connector are soldered together. The rectangular-waveguide-connecting portion of the waveguide connector includes a flange with attachment points therein. The rectangular-waveguide-connecting portion of the waveguide connector is attached to a rectangular waveguide through the attachment points via screws, bolts, or the like. One embodiment of the waveguide connector includes unitary construction wherein a stepped transformer having transition sections is formed therewith.

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