BANDPASS SIGMA-DELTA MODULATOR WITH ANTI-RESONANCE CANCELLATION

    公开(公告)号:WO2003043198A3

    公开(公告)日:2003-05-22

    申请号:PCT/SG2002/000266

    申请日:2002-11-13

    Abstract: A bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at high frequencies, acoustic resonators. In order to improve resolution at high frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required. A cancellation circuit may remove the anti-resonance signal from a resonator. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.

    BANDPASS SIGMA-DELTA MODULATOR WITH ANTI-RESONANCE CANCELLATION
    5.
    发明申请
    BANDPASS SIGMA-DELTA MODULATOR WITH ANTI-RESONANCE CANCELLATION 审中-公开
    具有抗谐振消除功能的BANDPASS SIGMA-DELTA调制器

    公开(公告)号:WO2003043198A2

    公开(公告)日:2003-05-22

    申请号:PCT/SG2002/000266

    申请日:2002-11-13

    CPC classification number: H03M3/404 H03H7/01 H03M3/344 H03M3/348

    Abstract: A bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at high frequencies, acoustic resonators. In order to improve resolution at high frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required. A cancellation circuit may remove the anti-resonance signal from a resonator. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.

    Abstract translation: 使用声谐振器或微机械谐振器的带通Σ-Δ调制器。 为了提高高频分辨率,声谐振器。 为了提高高频分辨率,在Σ-Δ调制器中代替电子谐振器使用声谐振器或微机械谐振器。 量化输出使用一对D / A转换器反馈到输入求和装置。 在四阶装置中,反馈是串联的两个求和装置。 这种Σ-Δ调制器可用于软件定义的无线电蜂窝电话系统以及需要高频和高分辨率A / D转换的其它应用中。 消除电路可以从谐振器去除反谐振信号。 反共振消除电路通过提供从谐振器的输出中减去的信号来消除谐振器的输出的反谐振。 消除电路包括与谐振器的静态电容相匹配的电容器。 谐振器和取消网络的负载也匹配。

    DYNAMIC BANDWIDTH CONTROL OF CHANNELS FOR NETWORK OPERATIONS
    6.
    发明申请
    DYNAMIC BANDWIDTH CONTROL OF CHANNELS FOR NETWORK OPERATIONS 审中-公开
    网络操作通道的动态带宽控制

    公开(公告)号:WO2012121672A1

    公开(公告)日:2012-09-13

    申请号:PCT/SG2012/000073

    申请日:2012-03-07

    CPC classification number: H04W28/20 H04L5/001 H04L5/0064 H04L5/0087 H04L5/0096

    Abstract: The present invention is directed to a network component of a communication network, the network component comprising a determiner configured to determine a required number of logical channels and to determine whether a bandwidth of a communication channel used by the communication network should be changed based on the required number of logical channels; a controller configured to change the bandwidth of the communication channel if it has been determined that the bandwidth of the communication channel used by the communication network should be changed based on the required number of logical channels; and a transceiver configured to send to a communication device a signal indicating to the communication device to operate in the communication channel with the changed bandwidth if the bandwidth of the communication channel has been changed. A method of performing an operation of a communication network in a communication channel is also disclosed.

    Abstract translation: 本发明涉及一种通信网络的网络部件,该网络部件包括确定器,该确定器被配置为确定所需数量的逻辑信道,并且确定通信网络使用的通信信道的带宽是否应当基于 所需数量的逻辑通道; 如果已经确定通信网络使用的通信信道的带宽应当根据所需数量的逻辑信道而改变,则控制器被配置为改变通信信道的带宽; 以及收发器,被配置为如果通信信道的带宽已经改变,则向通信设备发送指示通信设备在具有改变的带宽的通信信道中操作的信号。 还公开了在通信信道中执行通信网络的操作的方法。

    METHODS FOR NETWORK THROUGHPUT ENHANCEMENT
    7.
    发明申请
    METHODS FOR NETWORK THROUGHPUT ENHANCEMENT 审中-公开
    网络通过增强的方法

    公开(公告)号:WO2009139724A1

    公开(公告)日:2009-11-19

    申请号:PCT/SG2009/000101

    申请日:2009-03-20

    CPC classification number: H04L5/0037 H04B1/713 H04L5/0007 H04L5/0062

    Abstract: A method for transmitting OFDM symbols by a plurality of ad-hoc radio communication devices in an ad-hoc radio communication devices' group is provided, the method comprising: a first ad-hoc radio communication device of the ad-hoc radio communication devices' group transmitting a first plurality of two OFDM symbols in a first plurality of two frequency sub-ranges of a frequency range selected for transmission in accordance with a frequency hopping pattern, the frequency range comprising a plurality of frequency sub-ranges; in the same transmission time period, a second ad-hoc radio communication device of the ad-hoc radio communication devices' group transmitting a second plurality of two OFDM symbols in a second plurality of two frequency sub-ranges of the frequency range, wherein the second plurality of frequency sub-ranges has no overlap with the first plurality of frequency sub-ranges.

    Abstract translation: 提供了一种在自组织无线电通信设备组中由多个自组织无线电通信设备发送OFDM符号的方法,所述方法包括:所述自组织无线电通信设备的第一自组织无线电通信设备, 所述频率范围包括多个频率子范围;所述频率范围包括多个频率子范围,所述频率范围包括多个频率子范围,所述频率范围包括多个频率子范围; 在相同的传输时间段内,所述自组织无线电通信设备组的第二个自组织无线电通信设备在所述频率范围的第二多个两个频率子范围内发送第二多个两个OFDM符号,其中, 第二多个频率子范围与第一多个频率子范围没有重叠。

    INTEGRATION MODULE SYSTEM OF MILLIMETER-WAVE AND NON-MILLIMETER-WAVE ANTENNAS AND ELECTRONIC APPARATUS

    公开(公告)号:ZA202102862B

    公开(公告)日:2021-05-26

    申请号:ZA202102862

    申请日:2021-04-28

    Abstract: The present invention relates to an integration module system of millimeter-wave and non-millimeter-wave antennas and an electronic apparatus, the system comprising a millimeter-wave antenna module and a non-millimeter-wave environment, the millimeter-wave antenna module forming a communication connection with the non-millimeter-wave environment for realizing reusing of the millimeter-wave antenna module to achieve a function of non-millimeter-wave antenna(s). The present invention proposes directly reusing a millimeter-wave antenna module, which is designed so that this module also has an antenna function of a non-millimeter-wave module, while an individual module's own volume does not need to be increased, and the module itself does not need to have additionally-added antenna traces, that is, with the same volume, a function of non-millimeter-wave antenna(s) may be further added. Therefore, it obviously helps to avoid an increase of the device's volume and improve compactness of the system and system design.

    INTEGRATION MODULE OF MILLIMETER-WAVE AND NON-MILLIMETER-WAVE ANTENNAS

    公开(公告)号:ZA202102055B

    公开(公告)日:2021-06-30

    申请号:ZA202102055

    申请日:2021-03-26

    Abstract: The present invention discloses an integration module of millimeter-wave and non-millimeter-wave antennas, comprising a module carrier, one or more millimeter-wave antennas, one or more non-millimeter-wave antennas, and a radio frequency integrated circuit; the radio frequency integrated circuit is electrically connected to the millimeter-wave antenna(s); the radio frequency integrated circuit and the non-millimeter-wave antenna(s) are set in the same plane as or a space non-parallel with that of the module carrier. With the present invention, the height space on the side of a mobile communication device can be fully used, so that it is not necessary to occupy a large amount of horizontal area, thereby reducing the requirements of the antenna module for the overall size of the mobile communication device, and thus reducing cost and enhancing product competitiveness.

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