公开(公告)号：US20110267194A1

公开(公告)日：2011-11-03

申请号：US12831240

申请日：2010-07-06

申请人： Song Cheol Hong ,  Sun Bo Shim

发明人： Song Cheol Hong ,  Sun Bo Shim

IPC分类号： H01P5/18 ,  G08B13/14

CPC分类号： H01P5/185

摘要： A compact directional coupler and a mobile Radio-Frequency Identification (RFID) reader transceiver system using the same. The compact directional coupler can include a primary transmission line, a secondary transmission line, and a second capacitor connected in parallel to the secondary transmission line. The coupler can further include a first capacitor connected in parallel to the primary transmission line and capacitors connected between both end of the first capacitors and the ground respectively. A mobile RFID reader transceiver system can include a transmission terminal circuit, a power amplifier, the compact directional coupler, an antenna, a low noise amplifier, and the reception terminal circuit. The system further can include a band-pass filer, and/or a power combiner to match an output terminal of the power amplifier.

摘要翻译： 一种紧凑型定向耦合器和使用其的移动射频识别（RFID）读取器收发器系统。 紧凑型定向耦合器可以包括与二次传输线并联连接的主传输线，二次传输线和第二电容器。 耦合器还可以包括并联连接到主传输线的第一电容器和分别连接在第一电容器和地的两端之间的电容器。 移动RFID读取器收发器系统可以包括传输终端电路，功率放大器，小型定向耦合器，天线，低噪声放大器和接收终端电路。 该系统还可以包括带通滤波器和/或功率组合器，以匹配功率放大器的输出端子。

公开(公告)号：US20110150125A1

公开(公告)日：2011-06-23

申请号：US12968731

申请日：2010-12-15

申请人： Hyun Kyu YU ,  Jang Hong Choi ,  Hyun Ho Boo ,  Pil Jae Park ,  Mun Yang Park ,  Seong Do Kim ,  Sun Bo Shim ,  Song Cheol Hong

发明人： Hyun Kyu YU ,  Jang Hong Choi ,  Hyun Ho Boo ,  Pil Jae Park ,  Mun Yang Park ,  Seong Do Kim ,  Sun Bo Shim ,  Song Cheol Hong

IPC分类号： H04L27/00 ,  H03M3/02 ,  H03M1/66

CPC分类号： H03M1/68 ,  H03M1/687 ,  H03M1/745 ,  H03M1/747 ,  H03M3/50

摘要： There are provided a digital RF converter capable of improving a dynamic range and a signal to noise ratio of a transmitter and a digital RF modulator and a transmitter including the same. The digital RF converter may include: a delta-sigma modulated bits (DSMB) sub-block that generates a current magnitude corresponding to least-significant n bits among input signals at a first sampling speed; a least-significant bit (LSB) sub-block that generates a current magnitude corresponding to intermediate k bits among the input signals at a second sampling speed lower than the first sampling speed; and a most-significant bit (MSB) sub block that generates a current magnitude corresponding to most-significant m bits among the inputs signals at the second sampling speed.

摘要翻译： 提供了能够改善发射机和数字RF调制器的动态范围和信噪比的数字RF转换器，以及包括该数字RF转换器的发射机。 数字RF转换器可以包括：Δ-Σ调制比特（DSMB）子块，其以第一采样速度在输入信号中产生对应于最低有效n比特的电流幅度; 最低有效位（LSB）子块，其以比第一采样速度低的第二采样速度在输入信号中产生对应于中间k位的电流幅度; 和最高有效位（MSB）子块，其以第二采样速度在输入信号中产生对应于最高有效m位的电流幅度。

公开(公告)号：US08542773B2

公开(公告)日：2013-09-24

申请号：US12968731

申请日：2010-12-15

申请人： Hyun Kyu Yu ,  Jang Hong Choi ,  Hyun Ho Boo ,  Pil Jae Park ,  Mun Yang Park ,  Seong Do Kim ,  Sun Bo Shim ,  Song Cheol Hong

发明人： Hyun Kyu Yu ,  Jang Hong Choi ,  Hyun Ho Boo ,  Pil Jae Park ,  Mun Yang Park ,  Seong Do Kim ,  Sun Bo Shim ,  Song Cheol Hong

IPC分类号： H04L27/20 ,  H03C3/00 ,  H03M3/00 ,  H03M1/66

CPC分类号： H03M1/68 ,  H03M1/687 ,  H03M1/745 ,  H03M1/747 ,  H03M3/50

摘要： A digital RF converter, a digital RF modulator, and a transmitter are provided. The digital RF converter includes a delta-sigma modulated bits (DSMB) sub-block that generates a current magnitude corresponding to least-significant n bits among input signals at a first sampling speed, a least-significant bit (LSB) sub-block that generates a current magnitude corresponding to intermediate k bits among the input signals at a second sampling speed lower than the first sampling speed, and a most-significant bit (MSB) sub block that generates a current magnitude corresponding to most-significant m bits among the inputs signals at the second sampling speed.

摘要翻译： 提供数字RF转换器，数字RF调制器和发射器。 该数字RF转换器包括一个Δ-Σ调制比特（DSMB）子块，其以第一采样速度在输入信号之间产生对应于最低有效n比特的当前幅度，最低有效位（LSB）子块， 以低于第一采样速度的第二采样速度产生对应于输入信号中的中间k位的电流幅度，以及最高有效位（MSB）子块，其产生对应于最高有效m位的当前幅度 以第二采样速度输入信号。