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1. 发明申请

US20060114138A1 Method for calibrating a digital-to-analog converter and a digital-to-analog converter 审中-公开
公开(公告)号：US20060114138A1
公开(公告)日：2006-06-01
申请号：US11325449
申请日：2006-01-05
申请人： Petri Eloranta
发明人： Petri Eloranta
IPC分类号： H03M1/66
CPC分类号： H03M1/0651 , H03M1/1033 , H03M1/682 , H03M1/687 , H03M1/747
摘要： The invention describes a method for digitally calibrating a segmented current-steering D/A-converter. One embodiment of the present invention is a 14-bit DAC, where 6 MSB's are converted with two unweighted current source array. Further, in this invention a new method for organising the switching order based on the analysed data of mismatch of the current sources is presented. A programmable mapping device is used instead of the fixed thermometer decoding before the switch array. Using this programmable mapping device the switching order of the current switches can be selected optimally so that the error in the resulting analog signal is minimised. The switching order is programmed to the mapping device on the basis of the calibration method according to the present invention. The inventive amendment is aimed at processing errors which cause poor matching inside the component itself. This amendment is done by rearranging unweighted unity current switches into a more optimum order.

2. 发明授权

US07026967B2 Method for calibrating a digital-to-analog converter and a digital-to-analog converter 有权
标题翻译：用于校准数模转换器和数模转换器的方法
公开(公告)号：US07026967B2
公开(公告)日：2006-04-11
申请号：US10970393
申请日：2004-10-22
申请人： Petri Eloranta
发明人： Petri Eloranta
IPC分类号： H03M1/10
CPC分类号： H03M1/0651 , H03M1/1033 , H03M1/682 , H03M1/687 , H03M1/747
摘要： The invention describes a method for digitally calibrating a segmented current-steering D/A-converter. One embodiment of the present invention is a 14-bit DAC, where 6 MSB's are converted with two unweighted current source array. Further, in this invention a new method for organising the switching order based on the analysed data of mismatch of the current sources is presented. A programmable mapping device is used instead of the fixed thermometer decoding before the switch array. Using this programmable mapping device the switching order of the current switches can be selected optimally so that the error in the resulting analog signal is minimised. The switching order is programmed to the mapping device on the basis of the calibration method according to the present invention. The inventive amendment is aimed at processing errors which cause poor matching inside the component itself. This amendment is done by rearranging unweighted unity current switches into a more optimum order.
摘要翻译：本发明描述了一种用于数字校准分段电流导向D / A转换器的方法。本发明的一个实施例是14位DAC，其中6个MSB被转换为两个未加权的电流源阵列。此外，在本发明中，提出了一种用于基于分析的当前源的不匹配数据来组织切换顺序的新方法。在开关阵列之前，使用可编程映射设备代替固定温度计解码。使用该可编程映射设备，可以最佳地选择电流开关的开关顺序，使得最终模拟信号中的误差最小化。基于根据本发明的校准方法将切换顺序编程到映射设备。本发明的修正旨在处理导致部件本身内部不良匹配的错误。该修正是通过将未加权的单位电流开关重新排列成更优化的顺序完成的。

3. 发明授权

US06937848B2 Method and device for digital-to-RF conversion 有权
公开(公告)号：US06937848B2
公开(公告)日：2005-08-30
申请号：US10717986
申请日：2003-11-20
申请人： Petri Eloranta , Pauli Seppinen , Julius Koskela
发明人： Petri Eloranta , Pauli Seppinen , Julius Koskela
IPC分类号： H04B1/04 , H04B1/69 , H04L20060101 , H04L27/36 , H04Q7/20 , H04Q11/12
CPC分类号： H04B1/04 , H03D7/1441 , H04B2001/0491
摘要： A digital to RF-conversion device that combines the D/A conversion function and the upconversion function by a RF-carrier or IF-signal. The device comprises a plurality of parallel unit cells, each of which is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. The differential LO-switch is further connected in series to a current source. Each unit cell is adapted to receive a control voltage indicative of a data signal value.

4. 发明申请

US20050052297A1 Method for calibrating a digital-to-analog converter and a digital-to-analog converter 有权
标题翻译：用于校准数模转换器和数模转换器的方法
公开(公告)号：US20050052297A1
公开(公告)日：2005-03-10
申请号：US10970393
申请日：2004-10-22
申请人： Petri Eloranta
发明人： Petri Eloranta
IPC分类号： H03M1/10 , H03M1/68 , H03M1/74 , H03M1/66
CPC分类号： H03M1/0651 , H03M1/1033 , H03M1/682 , H03M1/687 , H03M1/747
摘要： The invention describes a method for digitally calibrating a segmented current-steering D/A-converter. One embodiment of the present invention is a 14-bit DAC, where 6 MSB's are converted with two unweighted current source array. Further, in this invention a new method for organising the switching order based on the analysed data of mismatch of the current sources is presented. A programmable mapping device is used instead of the fixed thermometer decoding before the switch array. Using this programmable mapping device the switching order of the current switches can be selected optimally so that the error in the resulting analog signal is minimised. The switching order is programmed to the mapping device on the basis of the calibration method according to the present invention. The inventive amendment is aimed at processing errors which cause poor matching inside the component itself. This amendment is done by rearranging unweighted unity current switches into a more optimum order.
摘要翻译：本发明描述了一种用于数字校准分段电流导向D / A转换器的方法。本发明的一个实施例是14位DAC，其中6个MSB被转换为两个未加权的电流源阵列。此外，在本发明中，提出了一种用于基于分析的当前源的不匹配数据来组织切换顺序的新方法。在开关阵列之前，使用可编程映射设备代替固定温度计解码。使用该可编程映射设备，可以最佳地选择电流开关的开关顺序，使得最终模拟信号中的误差最小化。基于根据本发明的校准方法将切换顺序编程到映射设备。本发明的修正旨在处理导致部件本身内部不良匹配的错误。该修正是通过将未加权的单位电流开关重新排列成更优化的顺序完成的。

5. 发明授权

US06778115B2 Digital-to-analog converter and method for reducing harmonic distortion in a digital-to-analog converter 有权
标题翻译：数模转换器和减少数 - 模转换器谐波失真的方法
公开(公告)号：US06778115B2
公开(公告)日：2004-08-17
申请号：US10276033
申请日：2003-01-08
申请人： Petri Eloranta
发明人： Petri Eloranta
IPC分类号： H03M166
CPC分类号： H03K17/04106 , H03K17/162 , H03M1/687 , H03M1/745 , H03M1/747
摘要： The invention relates to a digital-to-analog converter. In order to reduce distortion in the output, the converter comprises a first and a second current output (OUT, XOUT), at least two current sources (1) and assigned to each of the current sources (1) a current switch circuit. Each current switch circuit comprises means (4, 5, 6, 7) for creating two overlapping complementary control signals out of a signal indicating whether the current source (1) is selected, while in a first group of the current switch circuits the connection of the current source (1) to the current outputs is controlled by one of the control signals respectively, and while in a second group of the current switch circuits the control by the control signals is exchanged, each of the current switch circuits of the second group comprising in addition means (10) for inverting the signal input to the means for creating two overlapping complementary control signal (4, 5, 6, 7).
摘要翻译：本发明涉及数模转换器。为了减少输出中的失真，转换器包括第一和第二电流输出（OUT，XOUT），至少两个电流源（1），并分配给每个电流源（1）电流开关电路。每个电流开关电路包括用于从指示电流源（1）是否被选择的信号中产生两个重叠互补控制信号的装置（4,5,6,7），而在第一组电流开关电路中，连接电流源（1）分别由控制信号之一控制，而在第二组电流开关电路中，由控制信号进行的控制被交换，第二组的每个电流开关电路包括用于将输入的信号反相到用于产生两个重叠的互补控制信号（4,5,6,7）的装置的装置（10）。

6. 发明申请

US20070182617A1 Digital-to-radio frequency conversion device, chip set, transmitter, user terminal and data processing method 有权
标题翻译：数字到射频变频设备，芯片组，发射机，用户终端和数据处理方法
公开(公告)号：US20070182617A1
公开(公告)日：2007-08-09
申请号：US11348837
申请日：2006-02-07
申请人： Petri Eloranta , Pauli Seppinen
发明人： Petri Eloranta , Pauli Seppinen
IPC分类号： H03M1/12
CPC分类号： H04B1/30 , H03C1/50 , H04L27/361
摘要： The invention relates to a device for digital-to-radio frequency conversion, the device comprising: conversion cell matrices for digital-to-radio frequency conversion; means for providing a digital data signal; means for dividing the digital data signal into data signal groups; means for generating clock signals, the clock signals having different phases, the number of clock signals being the same as the number of data signal groups; means for synchronizing the data signal groups by using the clock signals; means for conveying the synchronized data signal groups to the conversion cell matrices, the number of conversion cell matrices being the same as the number of data signal groups; and means for synchronizing each conversion cell matrix by using the clock signal with which the synchronized data signal group conveyed thereto was synchronized for generating interpolation values.
摘要翻译：本发明涉及一种用于数字到无线电频率转换的装置，该装置包括：用于数字到无线电频率转换的转换单元矩阵; 用于提供数字数据信号的装置; 用于将数字数据信号分成数据信号组的装置; 用于产生时钟信号的装置，时钟信号具有不同的相位，时钟信号的数量与数据信号组的数量相同; 用于通过使用时钟信号来同步数据信号组的装置; 用于将同步的数据信号组传送到转换单元矩阵的装置，转换单元矩阵的数量与数据信号组的数量相同; 以及用于通过使用与其传送的同步数据信号组同步的时钟信号来同步每个转换单元矩阵的装置，用于产生内插值。

7. 发明申请

US20050191976A1 Reconfigurable transmitter with direct digital to RF modulator 失效
标题翻译：具有直接数字到RF调制器的可重新配置的发射器
公开(公告)号：US20050191976A1
公开(公告)日：2005-09-01
申请号：US11118883
申请日：2005-04-29
申请人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
发明人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
IPC分类号： H04B1/02 , H04B1/04 , H04B1/66 , H04L27/04
CPC分类号： H03F3/24 , H03C3/40 , H03F1/0222 , H03F2200/331 , H03M1/0682 , H03M1/682 , H03M1/687 , H03M1/745 , H03M1/747 , H04B1/0483 , H04L27/361 , H04L27/362
摘要： An RF transmitter uses two digital-to-RF conversion modules to convert digital baseband signals into RF signals. In Cartesian mode, baseband signals are conveyed to the conversion modules for RF conversion. In polar mode, baseband signals are converted into amplitude and phase data parts. Phase data part is converted into I and Q data parts to be converted by the conversion modules into RF signals, which are modulated in a power amplifier by amplitude data part through the power supply of the power amplifier. Each digital-to-RF module uses parallel unit cells to perform D/A conversion function and upconversion function by an IF signal. Each unit cell, adapted to receive a control voltage indicative of a data signal value, is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. LO-switch is further connected in series to a current source.
摘要翻译： RF发射器使用两个数字到RF转换模块将数字基带信号转换为RF信号。在笛卡尔模式中，基带信号被传送到转换模块进行RF转换。在极坐标模式中，基带信号被转换为幅度和相位数据部分。相位数据部分被转换为将由转换模块转换成的RF信号的I和Q数据部分，其通过功率放大器的电源由幅度数据部分在功率放大器中调制。每个数字至RF模块使用并行单元单元通过IF信号执行D / A转换功能和上变频功能。适于接收指示数据信号值的控制电压的每个单元是具有与差动LO开关对串联的差分数据开关部分的混频器单元型转换器。 LO开关进一步串联连接到电流源。

8. 发明申请

US20050111573A1 RF transmitter using digital-to-RF conversion 有权
公开(公告)号：US20050111573A1
公开(公告)日：2005-05-26
申请号：US10988202
申请日：2004-11-12
申请人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
发明人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
IPC分类号： H04B1/04 , H04B1/69 , H04L20060101 , H04L27/36 , H04Q7/20
CPC分类号： H03M1/745 , H03C3/40 , H03D7/1441 , H04B1/04 , H04B2001/0491 , H04L27/36
摘要： An RF transmitter having two digital to RF-conversion devices that combine the D/A conversion function and the upconversion function by a RF-carrier or IF-signal. The device comprises a plurality of parallel unit cells, each of which is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. The differential LO-switch is further connected in series to a current source. Each unit cell is adapted to receive a control voltage indicative of a data signal value.

9. 发明申请

US20050190854A1 Polar transmitter with digital to RF converter 失效
标题翻译：带数字至RF转换器的极性发射器
公开(公告)号：US20050190854A1
公开(公告)日：2005-09-01
申请号：US11118884
申请日：2005-04-29
申请人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
发明人： Niall Shakeshaft , Jussi Vepsalainen , Petri Eloranta , Pauli Seppinen
IPC分类号： H04B1/02 , H04B1/04 , H04B1/66 , H04L27/04
CPC分类号： H03F3/24 , H03C3/40 , H03F2200/331 , H03M1/745 , H04B1/0483 , H04L27/361
摘要： A polar transmitter, operable in linear mode or switched mode, uses a conversion module to convert baseband signals into amplitude data and phase data. The phase data is used to phase modulate a carrier frequency in a RF conversion module. The module comprises a plurality of parallel unit cells, each being a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. The differential LO-switch is connected in series to a current source. Each unit cell is adapted to receive a signal through an input end. In switched mode, the phase-modulated carrier frequency is amplitude modulated by the amplitude data through the supply voltage to a power amplifier. In linear mode, amplitude data is conveyed to the input end of the unit cells for modulating the phase-modulated carrier frequency in the conversion module.
摘要翻译：在线性模式或开关模式下可操作的极性发射器使用转换模块将基带信号转换为振幅数据和相位数据。相位数据用于对RF转换模块中的载波频率进行相位调制。该模块包括多个并行单元单元，每个单元单元是具有与差分LO开关对串联连接的差分数据开关部分的混频器单元型转换器。差分LO开关串联连接到电流源。每个单位单元适于通过输入端接收信号。在开关模式中，相位调制载波频率由幅度数据通过电源电压幅度调制到功率放大器。在线性模式中，幅度数据被传送到单位单元的输入端，用于调制转换模块中的相位调制载波频率。

10. 发明申请

US20050113043A1 Method and device for digital-to-RF conversion 有权
标题翻译：数字到RF转换的方法和设备
公开(公告)号：US20050113043A1
公开(公告)日：2005-05-26
申请号：US10717986
申请日：2003-11-20
申请人： Petri Eloranta , Pauli Seppinen , Julius Koskela
发明人： Petri Eloranta , Pauli Seppinen , Julius Koskela
IPC分类号： H04B1/04 , H04B1/69 , H04L20060101 , H04L27/36 , H04Q7/20
CPC分类号： H04B1/04 , H03D7/1441 , H04B2001/0491
摘要： A digital to RF-conversion device that combines the D/A conversion function and the upconversion function by a RF-carrier or IF-signal. The device comprises a plurality of parallel unit cells, each of which is a mixer cell type converter having a differential data switch section connected in series to a differential LO-switch pair. The differential LO-switch is further connected in series to a current source. Each unit cell is adapted to receive a control voltage indicative of a data signal value.
摘要翻译：数字到RF转换器件，通过RF载波或IF信号组合D / A转换功能和上变频功能。该装置包括多个并行单元单元，每个单元单元是具有与差分LO开关对串联的差分数据开关部分的混频器单元型转换器。差分LO开关还与电流源串联连接。每个单位单元适于接收指示数据信号值的控制电压。

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