公开(公告)号：US20160065254A1

公开(公告)日：2016-03-03

申请号：US14835111

申请日：2015-08-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Mi-Jeong PARK ,  Mun-Yang PARK ,  Dong-Woo KANG ,  Jang-Hong CHOI

IPC: H04B1/04 ,  H04B17/13

CPC classification number: H04B1/0475 ,  H03F1/3223 ,  H03F3/24 ,  H04B1/0028 ,  H04B2001/0416 ,  H04B2001/0441 ,  H04W52/346 ,  H04W52/52

Abstract: Exemplary embodiments of the present invention relate to an RF transmitter supporting carrier aggregation and envelope tracking and an RF transmitter according to an embodiment of the present invention comprises an RF path configured to convert a carrier aggregation signal in which a plurality of component carriers belonging to a baseband are aggregated into an RF signal; an ET path configured to generate an envelope signal by calculating magnitudes of the plurality of component carriers, respectively, and adding the calculated each magnitude of the component carriers; and an amplifier configured to power-amplify the converted RF signal according to a bias voltage corresponding to the generated envelope signal. According to exemplary embodiments of the present invention, power amplification efficiency and data transmission efficiency are improved by applying carrier aggregation and envelope tracking.

Abstract translation: 本发明的示例性实施例涉及一种支持载波聚合和包络跟踪的RF发射机，以及根据本发明实施例的RF发射机，包括：RF路径，被配置为转换载波聚合信号，其中属于 基带被聚合成RF信号; ET路径，其被配置为通过分别计算所述多个分量载波的幅度并且分别计算所述分量载波的每个幅度来生成包络信号; 以及放大器，被配置为根据与所生成的包络信号相对应的偏置电压对转换的RF信号进行功率放大。 根据本发明的示例性实施例，通过应用载波聚合和包络跟踪来提高功率放大效率和数据传输效率。

公开(公告)号：US20160087787A1

公开(公告)日：2016-03-24

申请号：US14793645

申请日：2015-07-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Kyun KIM ,  Mi-Jeong PARK ,  Ik-Soo EO

IPC: H04L7/04

CPC classification number: H04L7/048 ,  H03H17/028 ,  H03H17/0628 ,  H04L25/05

Abstract: A sample rate converter and a method of converting a sample rate are disclosed herein. The sample rate converter includes a data delay unit, a clock rate conversion unit, a Lagrange polynomial filter unit, a resample position calculation unit, and a resample position compensation unit. The data delay unit delays signals in response to an input clock signal. The clock rate conversion unit converts the sample rate of the signals. The Lagrange polynomial filter unit performs a filtering function on the signals whose rate has been converted. The resample position calculation unit outputs the value (Dint, dfrac) of the resample position of the signals based on a set resample ratio value. The resample position compensation unit corrects the error value of the signals by applying the value (Dint, dfrac) to the signals, and outputs a final signal.

Abstract translation: 本文公开了采样率转换器和转换采样率的方法。 采样率转换器包括数据延迟单元，时钟速率转换单元，拉格朗日多项式滤波器单元，重采样位置计算单元和重采样位置补偿单元。 数据延迟单元响应输入时钟信号延迟信号。 时钟速率转换单元转换信号的采样率。 拉格朗日多项式滤波器单元对其速率已被转换的信号执行滤波功能。 重采样位置计算单元基于设置的重采样比值输出信号的采样位置的值（Dint，dfrac）。 重采样位置补偿单元通过对信号施加值（Dint，dfrac）来校正信号的误差值，并输出最终信号。