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    • 16. 发明申请
    • MULTI-CHANNEL RECEIVER DEVICE
    • 多通道接收器设备
    • WO2009095863A3
    • 2010-10-14
    • PCT/IB2009050340
    • 2009-01-28
    • NXP BVCALDWELL RICHARD JFIFIELD ROBERT
    • CALDWELL RICHARD JFIFIELD ROBERT
    • H04L1/00H04B1/10H04B1/16H04B1/40H04L27/00H04W88/06
    • H04B1/1027H04L27/0008H04L27/0012H04W52/0245Y02D70/00Y02D70/1222Y02D70/1242Y02D70/142Y02D70/164Y02D70/40
    • A device processes signals from a plurality of signal channels that are received in parallel. A channel processing circuit (12a,b, 14a,b), applies a series of filtering operations selectively to the signal from a first one of the signal channels. A filter management circuit (18) detects a reception condition from reception of a signal in a second one of the signal channels. The filter management circuit (18) controls application of at least a part of said filtering operations to the signal from the first one the signal channels by the channel processing circuit (12a,b, 14a,b), dependent on the detected reception condition. Selected filter operations may be enabled or disabled. Thus, power consumption may be reduced. In an embodiment, the detected reception condition is determined as a by-product of functional reception of another channel. Thus power consumption for the detection of the reception condition is also reduced. From reception of specific types of channels, for example, it may be detected whether the device is indoors or outdoors and filtering of other channels may be adapted accordingly.
    • 设备处理来自并行接收的多个信号信道的信号。 信道处理电路(12a,b,14a,b)对来自第一信号信道的信号选择性地应用一系列滤波操作。 滤波器管理电路(18)从第二信号信道中的信号的接收中检测接收状态。 滤波器管理电路(18)根据检测到的接收条件,控制信道处理电路(12a,b,14a,b)对信号通道的信号的至少一部分的滤波操作的应用。 可以启用或禁用所选的过滤器操作。 因此,可以降低功耗。 在一个实施例中,检测到的接收条件被确定为另一信道的功能接收的副产品。 因此,用于检测接收条件的功耗也降低。 例如,从接收到特定类型的信道,可以检测设备是室内还是室外,并且可以相应地调整其他信道的过滤。
    • 18. 发明申请
    • RADIO REPEATER
    • 无线电台
    • WO2005091529A1
    • 2005-09-29
    • PCT/IB2005/050741
    • 2005-03-01
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PAYNE, Adrian, W.RAYNES, Deborah, L.CALDWELL, Richard, J.
    • PAYNE, Adrian, W.RAYNES, Deborah, L.CALDWELL, Richard, J.
    • H04B7/26
    • H04B7/15542
    • A radio repeater (8) operates in a radio communication system (1) (such as a Bluetooth ® communication system) including a mobile telephone (2) and a personal digital assistant (PDA) (3) each having a (Bluetooth ® ) transceiver (5,6). The repeater (8) is housed in a headset (7) incorporating an earpiece and microphone (not shown) for voice communication. The repeater (8) comprises a receive antenna (9) for receiving signals, e.g. in a band around 2.4 GHz; means (12) for shifting the frequency of the received signals by a constant frequency interval, e.g. to a band around 800 MHz; and a transmit antenna (14) for transmitting the frequency shifted signals. So, the mobile telephone (2) and the PDA (3) can communicate with each other directly using their Bluetooth ® transceivers (5,6), but, if there is no signal propagation path between them, such as when the body of a user (4) comes between them, they can receive the signals transmitted by the repeater (8). As these signals have just been shifted in frequency, the transceivers (5,6), only need knowledge of the way in which the required signal was originally transmitted (e.g. its frequency hopping sequence) and the frequency shift to successfully receive the required signal via the repeater (8).
    • 无线电中继器(8)在包括移动电话(2)和个人数字助理(PDA)(3))的无线电通信系统(1)(例如蓝牙通信系统)中操作,每个具有( 收发器(5,6)。 中继器(8)容纳在具有用于语音通信的耳机和麦克风(未示出)的耳机(7)中。 中继器(8)包括用于接收信号的接收天线(9)。 在2.4 GHz左右的频段; 用于将接收信号的频率以恒定频率间隔移位的装置(12) 到800 MHz左右的频段; 以及用于发送频移信号的发射天线(14)。 因此,移动电话(2)和PDA(3)可以使用他们的蓝牙收发器(5,6)直接相互通信,但是如果它们之间没有信号传播路径,例如当 用户(4)的身体进入它们之间,它们可以接收由中继器(8)发送的信号。 由于这些信号刚刚在频率上移动,收发机(5,6)只需要了解最初发送所需信号的方式(例如,其跳频序列)和频移以成功接收所需信号 中继器(8)。
    • 19. 发明申请
    • FULL DUPLEX MULTIMODE TRANSCEIVER
    • 全双工多模收发器
    • WO2004098085A1
    • 2004-11-11
    • PCT/IB2004/001361
    • 2004-04-20
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PAYNE, Adrian, W.CALDWELL, Richard, J.
    • PAYNE, Adrian, W.CALDWELL, Richard, J.
    • H04B1/52
    • H04B1/525H04B1/715H04B2001/7154
    • A method of operating a multimode transceiver comprises simultaneously transmitting (Tx) a signal having a relatively wide output frequency spectrum and receiving (Rx) a signal having a frequency spectrum narrower than that of the output frequency spectrum, but lying in the same band. A notch is introduced by a filter (18, 19, 20) into the output spectrum of the transmitted signal at a position corresponding to the received signal. The notch is adapted in response to at least one operating characteristic of the transceiver. The notch depth and bandwidth may be a function of the received and transmitted signal strengths, the relative frequency displacements of the received and transmitted signals and of the extent to which a degradation in the transmitted signal quality due to the notch can be tolerated. Furthermore adaptive cancellation (34) can be effected in the multimode transceiver using is for example the centre of the transmitted frequency spectrum or a portion of the transmit frequency spectrum at the centre frequency of the receive signal spectrum.
    • 一种操作多模收发器的方法包括同时发送(Tx)具有相对宽的输出频谱的信号,并且接收(Rx)具有比输出频谱窄的频谱但是处于相同频带的频谱的信号。 通过滤波器(18,19,20)在对应于接收信号的位置处将发射信号的输出频谱引入陷波。 陷波适应于收发器的至少一个操作特性。 陷波深度和带宽可以是接收和发射的信号强度,接收和发射信号的相对频率位移以及可以容忍由于陷波引起的发射信号质量劣化程度的函数。 此外,在多模收发器中可以实现自适应消除(34),例如是发射频谱的中心或接收信号频谱的中心频率处的发射频谱的一部分。
    • 20. 发明申请
    • LOW-IF PRE-PREAMBLE ANTENNA DIVERSITY RECEIVER
    • 低频前置天线多样性接收机
    • WO2004049594A1
    • 2004-06-10
    • PCT/IB2003/005174
    • 2003-11-14
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PAYNE, Adrian, W.CALDWELL, Richard, J.
    • PAYNE, Adrian, W.CALDWELL, Richard, J.
    • H04B7/08
    • H04B7/0811H04B7/0814
    • An antenna diversity receiver has a low-IF receiving mode and a diversity selection mode, and a switch arrangement for coupling one of the antennas to the IF channels when in the receiving mode, and coupling each of the channels to a different one of the antennas in the selection mode. A diversity controller compares qualities of signals received simultaneously from the different antennas during the selection mode, and controls the switch arrangement in the receiving mode, to use the better antenna. The quality measurement is carried out during reception of a carrier before a preamble to a desired signal is received, so that there is more time to obtain a better signal quality measurement and to enable better averaging over time. The channels have a polyphase filter with switchable cross coupling between the channels, so that it acts as two independent low pass filters in the selection mode.
    • 天线分集接收机具有低IF接收模式和分集选择模式,以及用于当处于接收模式时将天线之一耦合到IF信道并将每个信道耦合到天线中的不同天线的开关装置 在选择模式下。 分集控制器比较在选择模式期间从不同天线同时接收的信号的质量,并且在接收模式下控制开关布置,以使用更好的天线。 在接收到期望信号的前导码之前,在接收载波期间进行质量测量,使得有更多的时间来获得更好的信号质量测量并且使得能够随时间更好地平均。 通道具有多通道滤波器,可在通道之间切换交叉耦合,从而使其在选择模式下充当两个独立的低通滤波器。