公开(公告)号：US20010041549A1

公开(公告)日：2001-11-15

申请号：US09233651

申请日：1999-01-16

发明人： MASANOBU OKADA

IPC分类号： H04B001/26

CPC分类号： H04B1/3816 ,  H01Q1/2275 ,  H01Q3/01

摘要： A card-type radio device being capable of setting an antenna at a position where good transmission/reception sensitivity can be obtained is provided. The card-type radio device is constituted by a first housing having a radio communication circuit built therein and a second housing having an antenna built therein. The first housing and the second housing are freely detached/attached to/from each other by using an engagement means. When the card-type radio device is set in an information terminal device, the second housing is separated from the first housing, and the second housing is located at a position where the antenna has good transmission/reception sensitivity.

摘要翻译： 提供一种能够在可以获得良好的发送/接收灵敏度的位置处设置天线的卡型无线电设备。 卡式无线电设备由其中内置有无线电通信电路的第一外壳和内置天线的第二外壳构成。 第一壳体和第二壳体通过使用接合装置自由地分离/相互连接/彼此连接。 当卡式无线电设备设置在信息终端设备中时，第二壳体与第一壳体分离，并且第二壳体位于天线具有良好的发送/接收灵敏度的位置。

公开(公告)号：US20010018334A1

公开(公告)日：2001-08-30

申请号：US09793015

申请日：2001-02-26

发明人： Mehmet Ipek ,  Phillippe Blaud ,  Martin Rieger ,  Heinrich Schemmann

IPC分类号： H04B001/26

CPC分类号： H03D7/1425 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0088

摘要： The upconverter mixer circuit comprises a Gilbert cell with an LC-resonator tuned to the output frequency of the upconverter mixer circuit, and an output buffer. In a preferred embodiment the output buffer comprises a differential amplifier being emitter degenerated with inductances for a low-pass characteristic. The LC-resonator of the Gilbert cell as well as the inductances of the output amplifier are integrated in an integrated circuit together with the other parts of the upconverter mixer circuit and provide a first selection within the integrated circuit for the subsequent stages, for example an intermediate frequency filter of a double conversion TV tuner. When the upconverter mixer circuit is operated with a strong DC-current and hard switching, which is necessary for achieving low noise, strong high frequency parasitic currents are also generated. These are mainly harmonics of the local oscillator frequency, which can be observed on the supply lines and input and output lines of the integrated circuit. The two stages of the upconverter mixer, the Gilbert cell followed by the output buffer, provide therefore a first intermediate filter to suppress parasitic currents within the upconverter mixer circuit. This enables to design a receiver with a large dynamic range and a high linearity, and having a low nois.

摘要翻译： 上变频器混频器电路包括具有调谐到上变频器混频器电路的输出频率的LC谐振器的吉尔伯特单元和输出缓冲器。 在一个优选实施例中，输出缓冲器包括一个差分放大器，用于低通特性的电感被退化。 吉尔伯特单元的LC谐振器以及输出放大器的电感与上变频器混频器电路的其他部分一起集成在集成电路中，并在后续级的集成电路内提供第一选择，例如 双转换电视调谐器的中频滤波器。 当上变频器混频器电路以实现低噪声所必需的强直流电流和硬开关运行时，也产生强大的高频寄生电流。 这些主要是本地振荡器频率的谐波，可以在集成电路的电源线和输入和输出线上观察。 上变频器混频器的两个阶段，吉尔伯特单元后跟输出缓冲器，因此提供了第一中间滤波器，以抑制上变频器混频器电路内的寄生电流。 这使得能够设计具有大动态范围和高线性度并且具有低噪声的接收器。

公开(公告)号：US20010016476A1

公开(公告)日：2001-08-23

申请号：US09788363

申请日：2001-02-21

发明人： Masumi Kasahara ,  Koichi Yahagi

IPC分类号： H04B007/00 ,  H04B001/06 ,  H04B001/26

CPC分类号： H03L7/10 ,  H03L7/0891 ,  H03L7/14 ,  H03L7/18 ,  H03L7/199 ,  H04B1/00 ,  H04B1/406

摘要： A wireless communication system, which is provided with a PLL circuit having a plurality of oscillators and is capable of processing two or more transmit and receive signal different in frequency band from one another according to the switching between the oscillators, has a reset means which resets a voltage applied to each of filter capacitors lying within the PLL circuit to a predetermined voltage when the switching between the oscillators is performed.

摘要翻译： 一种无线通信系统，具有多个振荡器的PLL电路，并且能够根据振荡器之间的切换来处理两个或更多个频带彼此不同的发送和接收信号，该复位装置具有复位装置 当执行振荡器之间的切换时，施加到位于PLL电路内的每个滤波电容器的电压达到预定电压。

公开(公告)号：US20040248531A1

公开(公告)日：2004-12-09

申请号：US10874173

申请日：2004-06-24

申请人： NEC CORPORATION

发明人： Tetsuya Takaki

IPC分类号： H04B001/26

CPC分类号： H03J5/24

摘要： In a method of avoiding a band interference wave which is produced in a receiver when a reception frequency used for radio communication is converted into a fixed intermediate frequency by using the oscillation frequency of a local signal oscillator, when the frequency of a reception signal is on the low-frequency side in a reception frequency band, channel setting and route switching control are so performed as to make the reception signal pass through a low-pass filter. A circuit for avoiding a band interference wave is also disclosed.

摘要翻译： 在通过使用本地信号振荡器的振荡频率将用于无线电通信的接收频率转换成固定中频时，在接收机中产生的频带干扰波的方法中，当接收信号的频率为开时 在接收频带中的低频侧，信道设置和路由切换控制被执行以使接收信号通过低通滤波器。 还公开了一种用于避免波段干扰波的电路。

公开(公告)号：US20040242180A1

公开(公告)日：2004-12-02

申请号：US10484533

申请日：2004-06-29

发明人： Mark Beach ,  Tayfun Nesimoglu

IPC分类号： H04B001/26

CPC分类号： H03D7/163

摘要： A mixer architecture receives an input signal, which is frequency translated from a first frequency to a second frequency in a first mixer; the resulting output signal is retranslated back to the first frequency in a second mixer, the retranslated signal is added to a sample of the input, with gain and phase control, and the resulting error signal is added to the input signal when it is applied to the first mixer. This linearises the mixer output by compensating for any distortion introduced in the forward path. The mixer architecture is applicable for use in receivers or transmitters.

摘要翻译： 混频器结构接收在第一混频器中频率从第一频率转换到第二频率的输入信号; 所得到的输出信号在第二个混频器中被再次转换回第一个频率，重新传输的信号被加到输入的采样中，并具有增益和相位控制，并且所产生的误差信号在被施加到 第一台搅拌机 通过补偿在前向路径中引入的任何失真来对混频器输出进行线性化。 混频器架构适用于接收机或发射机。

公开(公告)号：US20040204036A1

公开(公告)日：2004-10-14

申请号：US10289267

申请日：2002-11-05

申请人： Fodus Communications, Inc.

发明人： Steve S. Yang

IPC分类号： H04B001/26 ,  H04B015/00 ,  H04M001/00 ,  H04B001/38

CPC分类号： H04B1/403

摘要： A configurable dual-band RF transceiver with a cascaded frequency conversion scheme (DBXVR) is disclosed for the processing of any selected RF channel signal specified by the open standard IEEE 802.11 a/b/g for Wireless LAN. The DBXVR comprises two switchably connected antennae for receiving and transmitting any selected RF channel signal and two subsets of signal processing hardware. The first signal processing subset is designed to perform all related frequency conversion, signal filtering and amplification between the b/g-band and its corresponding Baseband Inphase (I) and Quadrature (Q) signals. The second signal processing subset is designed to perform all related frequency conversion, signal filtering and amplification between the a-band, located at a disjointed and much higher frequency range than the b/g-band, and its corresponding b/g-band frequency for an ultimate, cascaded second signal processing into the Baseband I and Q signals using essentially the same hardware from the first signal processing subset.

摘要翻译： 公开了一种具有级联频率转换方案（DBXVR）的可配置双频RF收发器，用于处理由用于无线LAN的开放标准IEEE 802.11a / b / g指定的任何选定的RF信道信号。 DBXVR包括两个可切换连接的天线，用于接收和发送任何所选的RF信道信号和两个信号处理硬件子集。 第一信号处理子集被设计为执行b / g频带与其对应的基带同相（I）和正交（Q）信号之间的所有相关频率转换，信号滤波和放大。 第二信号处理子集被设计为执行位于与b / g频带不相交和高得多的频率范围的a频带之间的所有相关频率转换，信号滤波和放大及其对应的b / g频带频率 用于使用与第一信号处理子集基本上相同的硬件对基带I和Q信号进行最终级联的第二信号处理。

公开(公告)号：US20040197678A1

公开(公告)日：2004-10-07

申请号：US10794489

申请日：2004-03-05

发明人： Bruce McArthur ,  Adlai Smith

IPC分类号： G03F009/00 ,  G03B027/42 ,  H04B001/26

CPC分类号： G03F7/70633 ,  Y10S438/975

摘要： A photomask or reticle including a unique set of alignment attributes at separate and distinguishable field points is put in the reticle plane of a photolithographic projection system. The reticle pattern is exposed onto a resist coated wafer or substrate and processed through the final few steps of the photolithographic process. The resulting array of alignment attributes are then measured using a standard optical overlay metrology tool. The overlay tool is driven by a set of software instructions. By comparing the resulting overlay data to the placement error encoded on the reticle it can determined if the data has been read or displayed in the correct order.

摘要翻译： 在光刻投影系统的标线板平面中放置在单独和可区分的场点处包含一组唯一的对准属性的光掩模或掩模版。 将掩模版图案暴露在抗蚀剂涂覆的晶片或衬底上，并通过光刻工艺的最后几个步骤进行处理。 然后使用标准光学覆盖计量工具测量所得到的对准属性阵列。 覆盖工具由一组软件指令驱动。 通过将得到的覆盖数据与编码在标线上的放置错误进行比较，可以确定数据是否以正确的顺序读取或显示。

公开(公告)号：US20040192223A1

公开(公告)日：2004-09-30

申请号：US10626025

申请日：2003-07-24

申请人： Telefonaktiebolager L M Ericsson

发明人： Karl Hakan Torbjorn Gardenfors ,  Sven Mattisson ,  Jacobus Cornelis Haartsen

IPC分类号： H04B001/44 ,  H04B001/26 ,  G08B013/14

CPC分类号： H04B1/44 ,  H04B1/3833 ,  H04B1/408 ,  H04B1/715 ,  H04B15/00 ,  H04B2001/7152 ,  H04J3/10 ,  H04L5/1461 ,  H04L27/122

摘要： An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.

摘要翻译： 整个无线电收发器可以完全集成到一个IC芯片中。 为了在芯片上集成IF滤波器，使用具有低IF的外差架构。 单个直接调制的VCO用于传输期间的上转换和接收期间的下变频。 在VCO的振荡器槽中使用接合线作为谐振器。 在空中接口中使用TDD方案来消除串扰或泄漏。 高斯形二进制FSK调制方案用于提供许多其他实现优点。

公开(公告)号：US20040180640A1

公开(公告)日：2004-09-16

申请号：US10385091

申请日：2003-03-10

发明人： Eliav Zipper

IPC分类号： H04B001/26

CPC分类号： H03D3/007 ,  H03B5/368 ,  H03J2200/40

摘要： An apparatus in accordance with one embodiment of the present invention may include a local oscillator having an electroacoustic resonator; and zero intermediate frequency signal processing circuitry coupled to the local oscillator. In certain embodiments, the electroacoustic oscillator may be a thin film bulk acoustic resonator.

摘要翻译： 根据本发明的一个实施例的装置可以包括具有电声谐振器的本地振荡器; 以及耦合到本地振荡器的零中频信号处理电路。 在某些实施例中，电声振荡器可以是薄膜体声波谐振器。

公开(公告)号：US20040116096A1

公开(公告)日：2004-06-17

申请号：US10729343

申请日：2003-12-05

申请人： IRF SEMICONDUCTOR, INC.

发明人： David H. Shen

IPC分类号： H04B001/26

CPC分类号： H04B1/28 ,  H03H7/21 ,  H03H2007/0192

摘要： A RF communications receiver is disclosed which permits greater integration on standard silicon chips and consumes less power than previous receivers. A new method for using a tracking polyphase filter for image rejection of variable intermediate frequencies is introduced. This method allows for reduce sensitivity to resistor and capacitor manufacturing variations and allows for the polyphase filter response to be enhanced compared to the prior art.

摘要翻译： 公开了一种RF通信接收机，其允许在标准硅芯片上的更大集成并且消耗比先前的接收机更少的功率。 介绍了一种使用跟踪多相滤波器对可变中频进行图像抑制的新方法。 该方法允许降低对电阻器和电容器制造变化的灵敏度，并且允许与现有技术相比增强多相滤波器响应。