中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

60 records (took 0.018 seconds)

    선형 단조 출력 전력을 달성하기 위한 방법 및 장치
    43.
    发明公开
    선형 단조 출력 전력을 달성하기 위한 방법 및 장치 无效
    用于实现线性单色输出功率的方法和装置

    公开(公告)号：KR1020080091380A

    公开(公告)日：2008-10-10

    申请号：KR1020087020892

    申请日：2007-01-26

    Applicant: 퀄컴 인코포레이티드

    Inventor： 구다,스리니바스 ,  아트킨슨,케빈 ,  버탈라,아미트

    IPC: H03G3/30 ,  H04B7/06

    CPC classification number: H03G3/3042 ,  H03G2201/508 ,  H04W52/146 ,  H04W52/367

    Abstract: Techniques for achieving linear monotonic output power with piecewise non-linear and/or non-monotonic circuits are described. A coarse gain is selected for a first circuit having non-linear and/or non-monotonic characteristics. A fine gain is selected for a second circuit used to account for output power error due to the coarse gain. First and second look-up tables may store output power versus gain for the first and second circuits, respectively. An output power in the first look-up table may be selected based on the requested output power, and the gain corresponding to the selected output power may be provided as the coarse gain. An output power in the second look-up table may be selected based on the output power error, and the gain corresponding to the selected output power may be provided as the second gain.

    Abstract translation: 描述了用分段非线性和/或非单调电路实现线性单调输出功率的技术。 对具有非线性和/或非单调特性的第一电路选择粗增益。 对于用于考虑由于粗增益导致的输出功率误差的第二电路，选择精细增益。 第一和第二查找表可以分别存储第一和第二电路的输出功率与增益。 可以基于所请求的输出功率来选择第一查找表中的输出功率，并且可以将与所选择的输出功率相对应的增益提供为粗增益。 可以基于输出功率误差来选择第二查找表中的输出功率，并且可以将与所选输出功率相对应的增益提供为第二增益。

    멀티캐리어 무선전송방식의 순방향 자동이득 조절방법.
    49.
    发明公开
    멀티캐리어 무선전송방식의 순방향 자동이득 조절방법. 无效
    使用MULTICARRIER RADIO传输系统的前向自动增益控制方法

    公开(公告)号：KR1020020051662A

    公开(公告)日：2002-06-29

    申请号：KR1020000081124

    申请日：2000-12-23

    Applicant: 엘지전자 주식회사

    Inventor： 이충희

    IPC: H04B1/10

    CPC classification number: H03G3/3052 ,  H03G2201/508

    Abstract: PURPOSE: A forward AGC(Automatic Gain Control) method using a multicarrier radio transmission system is provided to simply execute correction in a system level by respectively detecting and comparing the output signals of IF surface-acoustic wave filters before three carrier waves are inputted to an IF AGC amplifier and adjusting their respective gains. CONSTITUTION: Before three carrier waves are inputted to IF AGC amplifier, a reference carrier wave among them is passed through the first IF surface-acoustic wave filter and amplified through an amplifier(S201). The amplified signal is detected by a detection part(S202). A control part tables the detected carrier wave and stores it in a memory(S203). Also the detection part respectively detects the other carrier waves through the other first IF surface-acoustic wave filters(S204). The control part also tables the detected carrier waves and stores them in the memory(S205). Then the control part compares the table value of the first carrier wave with the table value of the second carrier wave(S206). If the two values are different, the control part controls a pulse duration modulation generation part to generate a pulse duration modulation signal to an AGC amplifier, to which the second carrier wave is inputted, so that gain compensation can be made(S210). If the two values are identical, the control part makes the pulse duration modulation generation part generate a pulse duration modulation signal so as to get to the amplified level of the first carrier wave and adjusts the gain of the AGC amplifier, to which the second carrier wave is inputted(S207).

    Abstract translation: 目的：提供一种使用多载波无线电传输系统的前向AGC（Automatic Gain Control，自动增益控制）方法，通过分别检测和比较三个载波输入到IF之前的IF声表面波滤波器的输出信号，以简单地执行系统级的校正 IF AGC放大器并调整各自的增益。 构成：在将三个载波输入到IF AGC放大器之前，其中的参考载波通过第一IF声表面波滤波器并通过放大器放大（S201）。 放大信号由检测部检测（S202）。 控制部分将检测到的载波表示并存储在存储器中（S203）。 此外，检测部分分别通过其它第一IF声表面波滤波器检测其他载波（S204）。 控制部分还对检测到的载波进行表格存储（S205）。 然后，控制部将第一载波的表值与第二载波的表值进行比较（S206）。 如果两个值不同，则控制部控制脉冲宽度调制生成部，向输入第二载波的AGC放大器生成脉冲宽度调制信号，从而可以进行增益补偿（S210）。 如果两个值相同，则控制部使脉冲宽度调制生成部生成脉冲宽度调制信号，使其达到第1载波的放大电平，调整AGC放大器的增益，第2载波 波（S207）。

Patent Agency Ranking