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1. 发明公开

EP3002879A1 DIGITAL-TO-ANALOG CONVERTER (DAC), METHOD FOR OPERATING A DAC AND TRANSCEIVER CIRCUIT 审中-公开
标题翻译：数字模拟服务器（DAC），VERFAHREN ZUM BETRIEB EINES DAC UND SENDER-EMPFÄNGER-SCHALTUNG
公开(公告)号：EP3002879A1
公开(公告)日：2016-04-06
申请号：EP15181432.4
申请日：2015-08-18
申请人： NXP B.V.
发明人： Deloge, Matthieu , van der Wel, Arnoud Pieter
IPC分类号： H03M1/08 , H03M1/66 , H03M1/74
CPC分类号： H03M1/661 , H03M1/0881 , H03M1/745 , H04B1/38
摘要： Embodiments of digital-to-analog converters (DACs), methods for operating a DAC, and transceiver circuits are described. In one embodiment, a DAC includes an input terminal configured to receive a digital signal, a converter circuit configured to convert the digital signal into an analog signal using first-order interpolation allowing low electromagnetic emissions, and an output terminal configured to output the analog signal. Other embodiments are also described.
摘要翻译：描述了数模转换器（DAC）的实施例，用于操作DAC的方法和收发器电路。在一个实施例中，DAC包括被配置为接收数字信号的输入端子，被配置为使用允许低电磁发射的一阶插值将数字信号转换为模拟信号的转换器电路，以及被配置为输出模拟信号的输出端子。还描述了其他实施例。

2. 发明公开

EP2792076A4 APPARATUS AND METHOD FOR CONVERTING ANALOG SIGNAL TO DIGITAL SIGNAL 有权
标题翻译：装置和方法用于转换模拟信号的数字信号
公开(公告)号：EP2792076A4
公开(公告)日：2015-08-19
申请号：EP12857083
申请日：2012-12-13
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： LEE JONG-WOO
IPC分类号： H03M1/66 , H03M1/74
CPC分类号： H03M1/66 , H03M1/664 , H03M1/745

3. 发明公开

EP2769473A1 CONVERTISSEUR NUMERIQUE-ANALOGIQUE 有权转让
标题翻译：数字 - 模拟转换器
公开(公告)号：EP2769473A1
公开(公告)日：2014-08-27
申请号：EP12769106.1
申请日：2012-10-08
申请人： E2V Semiconductors
发明人： BORE, François , WINGENDER, Marc , DUMAINE, Emmanuel
IPC分类号： H03M1/08 , H03M1/74
CPC分类号： H03M1/745 , H03M1/0863 , H03M1/0881
摘要： The invention concerns digital-to-analogue converters for converting current. The converter includes a pair of differential branches with two transistors (T1, T2) controlled by a digital register (REG) activated at a clock frequency, and two resistive loads (R1, R2) receiving the currents of the differential branches to produce a differential electrical signal representing the analogue result of the conversion. The converter includes a dual switching of the currents of the differential branches: a first switching (Q1a, Q1b, Q2a, Q2b) authorises the transmission, to the loads, of the currents of the differential branches for 70 to 95% of the clock period and shunts these currents outside the loads the remainder of the time; a second switching (Q'1a, Q'1b, Q'2a, Q'2b) alternately and symmetrically makes a direct link followed by a cross link between the differential branches and the loads. The converter provides a signal with high spectral purity and can work with a good level of power in the four Nyquist zones of the spectrum of the output analogue signal, and in particular in the second and third zones.

4. 发明公开

EP2097984A4 DIGITAL LINEAR TRANSMITTER ARCHITECTURE 有权转让
标题翻译：数字线性发射器架构
公开(公告)号：EP2097984A4
公开(公告)日：2012-01-04
申请号：EP07855534
申请日：2007-12-14
申请人： ICERA CANADA ULC
发明人： MANKU TAJINDER , BELLAOUAR ABDELLATIF
IPC分类号： H04B1/04 , H03M1/68 , H03M1/74 , H03M3/00 , H03M3/04
CPC分类号： H03M1/68 , H03M1/745 , H03M3/50 , H03M7/3004

5. 发明公开

EP1875701A1 RECONFIGURABLE TRANSMITTER WITH DIRECT DIGITAL TO RF MODULATOR 审中-公开
标题翻译：利用直接数字TO射频调制器可重构STATION
公开(公告)号：EP1875701A1
公开(公告)日：2008-01-09
申请号：EP05742451.7
申请日：2005-05-18
申请人： Nokia Corporation
发明人： SEPPINEN, Pauli , ELORANTA, Petri , VEPSÄLÄINEN, Jussi, H. , SHAKESHAFT, Niall, E.
IPC分类号： H04L27/36 , H04B1/02
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.

6. 发明授权

EP1178611B1 Current source cell arrangement, method of selecting current cell and current addition type digital-to-analog converter 有权
标题翻译：电流源单元阵列，对电流源和电流加法类型的数字 - 模拟转换器的选择方法
公开(公告)号：EP1178611B1
公开(公告)日：2007-05-16
申请号：EP01115194.1
申请日：2001-06-22
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Katada, Tomoyuki
IPC分类号： H03M1/06 , H03M1/74
CPC分类号： H03M1/0648 , H03M1/745

7. 发明公开

EP1635471A2 Sub-ranging digital to analog converter for radio frequency amplification. 审中-公开
标题翻译：用于射频放大的小范围数模转换器。
公开(公告)号：EP1635471A2
公开(公告)日：2006-03-15
申请号：EP05108128.9
申请日：2005-09-05
申请人： M/A-Com Eurotec BV
发明人： Quilligan, Gerard T. , Nagle, Pierce Joseph , Heaney, Eugene Patrick
IPC分类号： H03M1/68
CPC分类号： H03M1/68 , H03M1/745
摘要： An apparatus and method for amplifying a radio frequency signal using a main Digital to Analog Converter (RFDAC) (250) and a subordinate Digital to Analog Converter (Sub-DAC) (270). The main RFDAC provides (250) a first portion of a N-bit digital output, which specifies the amplification level of the radio frequency signal, and the sub-DAC (270) provides a second portion of the N-bit digital word. Together, the main RFDAC (250) and the Sub-DAC (270) convert a complete N-bit digital word, where N specifies the resolution of the output radio frequency signal.
摘要翻译：一种用于使用主数字到模拟转换器（RFDAC）（250）和从属数字到模拟转换器（子DAC）（270）来放大射频信号的装置和方法。主RFDAC提供（250）指定射频信号的放大级别的N位数字输出的第一部分，并且子DAC（270）提供N位数字字的第二部分。主RFDAC（250）和子DAC（270）一起转换完整的N位数字字，其中N指定输出射频信号的分辨率。

8. 发明公开

EP1458102A1 High resolution and low power consumption digital-analog converter 有权
标题翻译： Hochauflösender数字模拟Wandler mit geringem Leistungsverbrauch
公开(公告)号：EP1458102A1
公开(公告)日：2004-09-15
申请号：EP03425160.3
申请日：2003-03-14
申请人： STMicroelectronics S.r.l.
发明人： Confalonieri, Pierangelo , Nicollini, Germano , Martignone, Ricardo
IPC分类号： H03M1/68
CPC分类号： H03M1/687 , H03M1/68 , H03M1/745 , H03M1/765
摘要： The described digital-analog converter comprises a first section (MSB) for converting the more significant bits of a digital code into a first voltage (Vin) of a multiplicity of discrete voltages that are integral multiples of a predetermined first voltage step (ΔV1), a second section (LSB) to convert the less significant bits of the digital code into a current, means for transforming the current (IL) of the second section (LSB) into a second voltage of a multiplicity of discrete voltages that are integral multiples of a second voltage step (ΔV2) equal to 1/2 L of the product of the first voltage step (ΔV1) multiplied by a predetermined coefficient, where L is the number of the less significant bits of the digital code to be converted, control means (DEC-9BIT; TRANSCOD-3BIT) of the first and the second section and summation means (OPA2) for obtaining an output voltage (Vout) that is the sum of the second voltage and the product of the first voltage multiplied by the predetermined coefficient. With a view to obtaining a low consumption, the summation means have resistive feedback means comprising a voltage divider (R3, R4) and the means for transforming the current (IL) into a second voltage comprise a conversion resistor (R4) that forms part of the voltage divider.
摘要翻译：所描述的数模转换器包括用于将数字代码的更高有效位转换为多个分立电压的第一电压（Vin）的第一部分（MSB），该多个离散电压是预定的第一电压步长（DELTA V1）的整数倍，，用于将数字代码的较低有效位转换为电流的第二部分（LSB），用于将第二部分（LSB）的电流（IL）变换为多个整数倍的多个离散电压的第二电压的装置第二电压步长（DELTA V2）等于第一电压步长（DELTA V1）乘以预定系数的乘积的1/2

9. 发明授权

EP1039440B1 DISPLAY DEVICE AND ELECTRONIC DEVICE 有权
标题翻译：显示设备和电子设备
公开(公告)号：EP1039440B1
公开(公告)日：2004-08-04
申请号：EP99970493.5
申请日：1999-10-12
申请人： SEIKO EPSON CORPORATION
发明人： OZAWA, Tokuroh Seiko Epson Corporation
IPC分类号： G09G3/30 , G09F9/30 , H03M1/66 , G09G3/32
CPC分类号： G09G3/2011 , G09G3/30 , G09G3/3233 , G09G3/3258 , G09G3/3283 , G09G2300/0417 , G09G2300/0842 , G09G2310/027 , G09G2310/066 , H03M1/745

10. 发明公开

EP1264407A1 IMPROVED CURRENT-STEERING D/A CONVERSION 审中-公开
标题翻译：带功率控制的改进DIA转换
公开(公告)号：EP1264407A1
公开(公告)日：2002-12-11
申请号：EP01908572.9
申请日：2001-02-28
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： ANDERSSON, Ola
IPC分类号： H03M1/10
CPC分类号： H03M1/1057 , H03M1/745
摘要： The present invention refers to a method for using a current-steering N-bit D/A converter and to the D/A converter, said converter comprising N binary weighted current sources SIk, k = 0, 1, ..., N-1, connectable to a common output, each current source SIk comprising 2k unit current sources, SI¿unit?, of equal strength connected in parallel, wherein digital input bits bi, i = 0, 1, ..., N-1, bN-1 being the most significant bit (MSB), determine which respective current source, SIk, k = 0, 1, ..., N-1, to be connected to the output. The invention features that, during D/A conversion, the current IN-1 from the largest current source SIN-1 is substituted for a current I~N-1, where I~N-1 = I0 + I1 + I2 + ... + IN-2 + Iunit, in which expression, Ik being the current from the current source SIk, and Iunit being the current from an additional unit current source.

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