公开(公告)号：US06711389B2

公开(公告)日：2004-03-23

申请号：US09785703

申请日：2001-02-16

申请人： Thomas E. Medl ,  Ronald D. Boesch

发明人： Thomas E. Medl ,  Ronald D. Boesch

IPC分类号： H01Q1112

CPC分类号： H03G3/3042 ,  H03G3/3047

摘要： A power controller for a mobile terminal variable gain amplifier (VGA). A controller consistent with the invention controls VGA output using a feedback error signal established based on the difference between a signal representative of the VGA output and a signal representative of a target output. The error signal causes convergence of the VGA output to the target output based on a magnitude of the difference. A method of controlling the output of a variable gain amplifier in a mobile terminal is also provided.

摘要翻译： 用于移动终端可变增益放大器（VGA）的功率控制器。 与本发明一致的控制器使用基于代表VGA输出的信号和表示目标输出的信号之间的差异建立的反馈误差信号来控制VGA输出。 误差信号基于差值的大小，导致VGA输出到目标输出的收敛。 还提供了一种控制移动终端中的可变增益放大器的输出的方法。

公开(公告)号：US06693599B1

公开(公告)日：2004-02-17

申请号：US09936125

申请日：2002-02-13

申请人： Michael Yan Wah Chia ,  Chip Hong Ang ,  Daryl Lee Song Cher ,  We Peng Jason Ng

发明人： Michael Yan Wah Chia ,  Chip Hong Ang ,  Daryl Lee Song Cher ,  We Peng Jason Ng

IPC分类号： H01Q1112

CPC分类号： H01Q1/2225 ,  G06K19/0701 ,  G06K19/0723 ,  H01Q1/22 ,  H01Q1/241 ,  H01Q1/248 ,  H01Q1/38 ,  H01Q7/00 ,  H01Q9/0435 ,  H01Q21/06 ,  H01Q21/29 ,  H02M7/06 ,  H02M2001/009

摘要： An RF transponder having an antenna comprising at least two ports operable to receive signals such that, in use, the signals in combination establish at least two current nulls on the antenna, each of the ports being located substantially at a current null.

摘要翻译： 一种具有天线的RF转发器，包括至少两个端口，可操作以接收信号，使得在使用中信号组合地在天线上建立至少两个当前零点，每个端口基本上位于当前零点。

公开(公告)号：US06680710B1

公开(公告)日：2004-01-20

申请号：US10114101

申请日：2002-04-02

申请人： Joseph T. Merenda

发明人： Joseph T. Merenda

IPC分类号： H01Q1112

CPC分类号： H01Q1/273 ,  H01Q7/005 ,  H01Q21/24 ,  H01Q21/29

摘要： Radiation synthesizer systems provide efficient wideband operation with loop antenna elements which are small relative to operating wavelength. Energy dissipation is substantially reduced by cycling energy back and forth between a high-Q radiator and a storage capacitance under control of a switching circuit. Systems using multi-segment loop antennas match input impedance to switching circuit parameters. Use of such antennas in crossed-loop configurations excited in quadrature and supported on a wearable garment provide body-borne antennas with isotropic type coverage. With light-weight flexible construction, a wearable radiating system can avoid any need for visually identifiable features and provide effective antenna pattern coverage regardless of the wearer's body orientation, whether standing, prone or otherwise.

摘要翻译： 辐射合成器系统提供了相对于工作波长小的环形天线元件的有效宽带操作。 在开关电路的控制下，通过在高Q散热器和存储电容之间来回循环能量，能量消耗大大降低。 使用多段环路天线的系统将输入阻抗匹配到开关电路参数。 使用这种天线在交叉环形配置中被正交激励并支持在可穿戴的服装上，为身体传播的天线提供各向同性的覆盖。 使用轻巧的柔性结构，可穿戴式辐射系统可以避免任何视觉上可识别的特征的需要，并提供有效的天线图案覆盖，而不管佩戴者的身体方向如何，无论站立，倾斜还是其他方式。

公开(公告)号：US06680708B2

公开(公告)日：2004-01-20

申请号：US10269121

申请日：2002-10-12

申请人： Kazuhisa Yamaki

发明人： Kazuhisa Yamaki

IPC分类号： H01Q1112

CPC分类号： H01Q1/38 ,  H01Q1/243 ,  H01Q5/371 ,  H01Q7/00 ,  H01Q7/005 ,  H01Q9/265

摘要： In order to enable one radiant electrode to transmit and receive signals with a plurality of frequency bands, in a base member, a feeding electrode to be connected to a signal supply source and an open electrode floated from the ground are arranged adjacent to each other leaving a space. In the base member, one end of a linear electrode is connected to the feeding electrode while the other end is connected to the open electrode. A substantially loop-shaped radiant electrode extending from the feeding electrode toward the open electrode via the linear electrode is defined by the feeding electrode, the open electrode, and the linear electrode. The linear electrode is provided with a short-cut electrode short-cutting a loop of the radiant electrode. A feeding-end portion (feeding electrode) and an open-end portion (open electrode) of the loop-shaped radiant electrode are combined together with a capacitance therebetween, so that the gain in an antenna operation due to higher-order resonance of the radiant electrode is improved, enabling not only basic resonance of the radiant electrode but also the higher-order resonance to be practically used in signal transmitting or receiving.

摘要翻译： 为了使一个辐射电极能够发射和接收具有多个频带的信号，在基座部件中，要连接到信号源的馈电电极和从地面漂浮的开放电极彼此相邻排列留出 一个空间 在基体部件中，线状电极的一端与供电电极连接，而另一端与开放电极连接。 通过馈电电极，开放电极和线性电极限定从馈电电极经由线状电极延伸到开放电极的基本环形辐射电极。 线性电极设置有短切电极，其切割辐射电极的环。 环形辐射电极的馈电端部分（馈电电极）和开口端部分（开放电极）与它们之间的电容组合在一起，从而由于高频共振 辐射电极得到改善，不仅能够使信号发射或接收中实际使用辐射电极的基本共振，而且能够实现高次谐振。

公开(公告)号：US06640091B1

公开(公告)日：2003-10-28

申请号：US09628554

申请日：2000-07-28

申请人： Osamu Shiraishi

发明人： Osamu Shiraishi

IPC分类号： H01Q1112

CPC分类号： H03D7/1483 ,  H03D7/1433 ,  H03D7/1475

摘要： A transmission mixer (10) has a local input port (10LO) supplied with a local signal, an intermediate input port (10in) supplied with an input signal having an input frequency (fin) a first output port (10out1) for producing a first output signal having a first output frequency (fout1), and a second output port (10out2) for producing a second output signal having a second output frequency (fout2). The first and the second output ports (10out1, 10out2) are connected to first and second loads (LD1, LD2), respectively. The first load (LD1) is that where impedance-matching is made at the first output frequency (fout1) while the second load (LD2) is that where impedance-matching is made at the second output frequency (fout2).

摘要翻译： 传输混合器（10）具有提供有本地信号的本地输入端口（10LO），提供有输入频率（fin）的输入信号的中间输入端口（10in），第一输出端口（10out1），用于产生第一 输出信号具有第一输出频率（fout1）和第二输出端口（10out2），用于产生具有第二输出频率（fout2）的第二输出信号。 第一和第二输出端口（10out1,10out2）分别连接到第一和第二负载（LD1，LD2）。 第一负载（LD1）是在第一输出频率（fout1）进行阻抗匹配，而第二负载（LD2）是在第二输出频率（fout2）进行阻抗匹配的情况下的负载。

公开(公告)号：US06625429B1

公开(公告)日：2003-09-23

申请号：US09609255

申请日：2000-06-30

申请人： Osamu Yamashita

发明人： Osamu Yamashita

IPC分类号： H01Q1112

CPC分类号： H03G3/3047

摘要： A mobile radio communication apparatus comprises a power amplifier (102) for power-amplifying a transmission signal (103) into an amplified transmission signal which is transmitted through an antenna (101). A high-sensitivity detector (105) high-sensitivity detects the amplified transmission signal. The high-sensitivity detection signal is limited by a diode (107) to a predetermined voltage to be produced as a first output voltage signal. A low-sensitivity detector (110) low-sensitivity detects the amplified transmission signal. A predetermined offset voltage is superposed on the low-sensitivity detection signal to be produced as a second output voltage signal. The first and the second output voltage signals are combined into a combined output signal. A comparator (118) compares the combined output signal with a transmission ramp production signal supplied from a mobile radio communication apparatus control section. With reference to a comparison result, a dynamic range of the power amplifier is controlled.

摘要翻译： 移动无线电通信装置包括功率放大器（102），用于将发射信号（103）功率放大成通过天线（101）传输的放大的发射信号。 高灵敏度的高灵敏度检测器（105）检测放大的传输信号。 高灵敏度检测信号由二极管（107）限制为要作为第一输出电压信号产生的预定电压。 低灵敏度检测器（110）低灵敏度检测放大的传输信号。 预定的偏移电压叠加在作为第二输出电压信号产生的低灵敏度检测信号上。 第一和第二输出电压信号被组合成组合的输出信号。 比较器（118）将组合的输出信号与从移动无线电通信设备控制部分提供的传输斜坡产生信号进行比较。 参考比较结果，控制功率放大器的动态范围。

公开(公告)号：US06563469B2

公开(公告)日：2003-05-13

申请号：US10032935

申请日：2001-12-27

申请人： Masaaki Miyata ,  Akira Miyoshi

发明人： Masaaki Miyata ,  Akira Miyoshi

IPC分类号： H01Q1112

CPC分类号： H01Q1/38 ,  H01Q7/00

摘要： In order to feed at four points to a loop portion (12) made of conductor formed around a central axis (O) in a loop fashion along a peripheral surface of a cylindrical body (11) formed by rounding a flexible insulator film member (20) around the central axis in a cylindrical fashion, each of four feeders (13) formed on the peripheral surface of the cylindrical body comprises a vertical feeding portion (131) having one end (131a) grounded and another end (131b) extending toward the loop portion, a zigzag line (132) disposed between the other end of the vertical feeding portion and the loop portion, a tap (133) for feeding from a feeding terminal (13a) to the vertical feeding portion.

摘要翻译： 为了将四点馈送到由围绕中心轴线（O）形成的导体制成的环形部分（12），该环形部分沿着圆形主体（11）的圆周表面以环形方式形成，所述圆柱形主体（11）通过使柔性绝缘膜构件（20 ）围绕中心轴以圆柱形方式围绕，形成在圆柱形主体的圆周表面上的四个进给器（13）中的每一个包括具有一端（131a）接地的垂直进给部分（131），另一端（131b）朝向 设置在垂直进给部分的另一端和环部分之间的之字形线（132），用于从馈送端子（13a）馈送到垂直馈送部分的抽头（133）。

公开(公告)号：US06553211B1

公开(公告)日：2003-04-22

申请号：US09137915

申请日：1998-08-20

申请人： William Wei Zhou

发明人： William Wei Zhou

IPC分类号： H01Q1112

CPC分类号： H03F1/3235

摘要： A pilot adjusting system adjusts the power level of the pilot relative to the power level of the input signal. For example, the pilot adjusting system detects the power level of the input signal on the signal path leading to an RF amplifier. In response to the power level of the input signal, the pilot adjusting system adjusts the power level of the pilot signal which is injected into the signal path prior to the RF amplifier. In certain embodiments, the pilot adjuster adjusts the pilot power level to maintain a desired input signal to pilot signal ratio at the input to the RF amplifier for the input signal range of the RF amplifier. As such, if the input signal power level drops 30 dB, the pilot adjuster reduces the power level of the pilot signal by 30 dB, thereby maintaining the input signal to pilot ratio throughout the input range of the RF amplifier. Other parameters of the pilot signal can be adjusted relative to other parameters for the input signal prior to the pilot signal being injected into the main signal path prior to the RF amplifier.

摘要翻译： 导频调节系统相对于输入信号的功率电平来调节导频的功率电平。 例如，导频调整系统检测通向RF放大器的信号路径上的输入信号的功率电平。 响应于输入信号的功率电平，导频调节系统调整在RF放大器之前注入到信号路径中的导频信号的功率电平。 在某些实施例中，导频调节器调整导频功率电平，以在RF放大器的输入信号范围的RF放大器的输入处保持期望的输入信号与导频信号比。 因此，如果输入信号功率电平降低30dB，则导频调节器将导频信号的功率电平降低30dB，从而在RF放大器的整个输入范围内保持输入信号与导频比。 导频信号的其他参数可以在导频信号在RF放大器之前被注入主信号路径之前相对于输入信号的其它参数进行调整。

公开(公告)号：US06449466B1

公开(公告)日：2002-09-10

申请号：US09224193

申请日：1998-12-30

申请人： Hang Jin ,  Joseph R. Cleveland

发明人： Hang Jin ,  Joseph R. Cleveland

IPC分类号： H01Q1112

CPC分类号： H01Q3/267

摘要： There is disclosed an adaptive pre-distortion correction circuit for use in an RF transmitter having a transmit path capable of receiving a digital input baseband signal and generating a modulated RF output signal. The adaptive pre-distortion circuit comprises 1) input sampling means coupled to an input of the transmit path for capturing from a first digital input sample of amplitude X; 2) demodulation circuitry coupled to an output of the transmit path for receiving and demodulating the modulated RF output signal to produce a digital output baseband signal; 3) output sampling means coupled to the demodulation circuitry for capturing a first digital output sample corresponding to the first input sample; and 4) processing means for comparing the first digital input sample and the first digital output sample and calculating a pre-distortion correction value corresponding to the amplitude X. The pre-distortion correction value are stored in a look-up table and are continually updated to compensate for circuit changes over time.

摘要翻译： 公开了一种用于具有能够接收数字输入基带信号并产生经调制的RF输出信号的发送路径的RF发射机中的自适应预失真校正电路。 自适应预失真电路包括：1）耦合到发射路径的输入的输入采样装置，用于从幅度为X的第一数字输入采样获取; 2）耦合到所述发射路径的输出的解调电路，用于接收和解调所述经调制的RF输出信号以产生数字输出基带信号; 3）输出采样装置，其耦合到所述解调电路，用于捕获与所述第一输入样本相对应的第一数字输出采样; 以及4）处理装置，用于比较第一数字输入样本和第一数字输出样本，并计算与振幅X对应的预失真校正值。预失真校正值存储在查找表中并且不断更新 以补偿电路随时间的变化。

公开(公告)号：US06437751B1

公开(公告)日：2002-08-20

申请号：US09639361

申请日：2000-08-15

申请人： Robert P. M. Craven ,  James E. Smith ,  Larry Hawks ,  Roy S. Nutter, Jr. ,  Franz A. Pertl

发明人： Robert P. M. Craven ,  James E. Smith ,  Larry Hawks ,  Roy S. Nutter, Jr. ,  Franz A. Pertl

IPC分类号： H01Q1112

CPC分类号： H01Q9/16 ,  H01Q7/00 ,  H01Q11/12

摘要： An electromagnetic antenna includes a multiply connected surface, such as a toroidal surface; first and second insulated conductors; and first and second signal terminals. The first insulated conductor extends around and over the surface with a first pitch or winding sense from a first node to a second node. The second insulated conductor also extends around and over the surface with a second pitch or winding sense, which is opposite from the first pitch or winding sense, from a third node to a fourth node. The first and second insulated conductors are contrawound relative to each other around and over the surface. In one embodiment of the invention, at least one of the nodes is open. In other embodiments of the invention, the signal terminals are structured for connection to a cooperative antenna structure.

摘要翻译： 电磁天线包括诸如环形表面的多重连接表面; 第一和第二绝缘导体; 以及第一和第二信号端子。 第一绝缘导体从第一节点到第二节点以第一节距或绕组的方式在表面周围和上方延伸。 第二绝缘导体也以与第一节距或绕组方向相反的第二节距或绕组方向从第三节点延伸到第四节点周围和表面上。 第一和第二绝缘导体相对于彼此围绕和超过表面进行调整。 在本发明的一个实施例中，节点中的至少一个是开放的。 在本发明的其他实施例中，信号端子被构造成用于连接到协作天线结构。