公开(公告)号：WO2004095686A2

公开(公告)日：2004-11-04

申请号：PCT/IB2004/001191

申请日：2004-04-20

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PARSA, Ali ,  FOTOWAT-AHMADY, Ali ,  FAGHFURI, Ali ,  JENABI, Mahta ,  RIOU, Emmanuel ,  HAHN, Steffen

Inventor： PARSA, Ali ,  FOTOWAT-AHMADY, Ali ,  FAGHFURI, Ali ,  JENABI, Mahta ,  RIOU, Emmanuel ,  HAHN, Steffen

IPC: H03C3/40

CPC classification number: H04L27/364 ,  H03C3/406

Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.

Abstract translation: 正交调制器和通过将第一测试音信号施加到调制器的同相调制分支输入并将第一测试音调信号的九十度相移版本应用于调制器的正交调制分支输入的校准方法 。 测量调制器的输出信号中的载波泄漏电平，并根据基带调整直流偏移电压以最小化载波泄漏。 将第二测试音信号施加到同相调制分支输入和第二测试音调信号的九十度相移版本到正交调制分支输入。 测量输出信号中不期望的上边带频率分量的电平，并且响应于基带增益同相和正交调制分支，并且调整本地振荡器相位误差以最小化不期望的边带。

公开(公告)号：WO2004082232A1

公开(公告)日：2004-09-23

申请号：PCT/IB2004/000668

申请日：2004-03-11

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  FOTOWAT, Ali ,  ZHANG, Yifeng ,  RIOU, Emmanuel

Inventor： FOTOWAT, Ali ,  ZHANG, Yifeng ,  RIOU, Emmanuel

IPC: H04L27/36

CPC classification number: G01V15/00 ,  H03D3/009 ,  H04L27/2649 ,  H04L27/364

Abstract: A transceiver (300) is provided with a compensation scheme for compensating gain and phase mismatches introduced by respective pairs of base-band filters in the receiver (130a, 130b) and transmitter (230a, 230b) of a wireless transceiver. A correction signal is derived from the gain and phase mismatch observed during loop back tests during which a signal of known characteristics at a selected frequency is passed through the base-band filters. The selected frequency belongs to the spectrum of the sub-band to which the quadrature signals belong.

Abstract translation: 收发器（300）具有用于补偿由无线收发器的接收器（130a，130b）和发送器（230a，230b）中的各对基带滤波器引入的增益和相位失配的补偿方案。 在环回测试期间观察到的增益和相位失配导出校正信号，在此期间，所选频率处的已知特性的信号通过基带滤波器。 所选频率属于正交信号所属的子带的频谱。

公开(公告)号：WO2004095686A8

公开(公告)日：2005-03-10

申请号：PCT/IB2004001191

申请日：2004-04-20

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PARSA ALI ,  FOTOWAT-AHMADY ALI ,  FAGHFURI ALI ,  JENABI MAHTA ,  RIOU EMMANUEL ,  HAHN STEFFEN

Inventor： PARSA ALI ,  FOTOWAT-AHMADY ALI ,  FAGHFURI ALI ,  JENABI MAHTA ,  RIOU EMMANUEL ,  HAHN STEFFEN

IPC: H03C3/40

CPC classification number: H04L27/364 ,  H03C3/406

Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.

Abstract translation: 一种正交调制器及其校准方法，其通过将第一测试音调信号施加到调制器的同相调制分支输入端以及将第一测试音调信号的90度相移版本施加到调制器的正交调制分支输入端 。 测量调制器输出信号中的载波泄漏电平，并作为响应调整基带直流偏移电压以最小化载波泄漏。 第二测试音调信号被施加到同相调制支路输入，并且第二测试音调信号的90度相移版本被施加到正交调制支路输入。 测量输出信号中不希望的上边带频率分量的电平，并且作为响应，基带增益调整同相和正交调制分支以及本地振荡器相位误差以最小化不需要的边带。

公开(公告)号：WO2004095686A3

公开(公告)日：2005-01-20

申请号：PCT/IB2004001191

申请日：2004-04-20

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PARSA ALI ,  FOTOWAT-AHMADY ALI ,  FAGHFURI ALI ,  JENABI MAHTA ,  RIOU EMMANUEL ,  HAHN STEFFEN

Inventor： PARSA ALI ,  FOTOWAT-AHMADY ALI ,  FAGHFURI ALI ,  JENABI MAHTA ,  RIOU EMMANUEL ,  HAHN STEFFEN

IPC: H03C3/40

CPC classification number: H04L27/364 ,  H03C3/406

Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.

Abstract translation: 正交调制器和通过将第一测试音信号施加到调制器的同相调制分支输入并将第一测试音调信号的九十度相移版本应用于调制器的正交调制分支输入的校准方法 。 测量调制器的输出信号中的载波泄漏电平，并根据基带调整直流偏移电压以最小化载波泄漏。 将第二测试音信号施加到同相调制分支输入和第二测试音调信号的九十度相移版本到正交调制分支输入。 测量输出信号中不期望的上边带频率分量的电平，并且响应于基带增益同相和正交调制分支，并且调整本地振荡器相位误差以最小化不期望的边带。