公开(公告)号：US08198945B2

公开(公告)日：2012-06-12

申请号：US11917128

申请日：2006-05-30

Applicant: Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

Inventor： Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

IPC: H03B27/00

CPC classification number: H03B27/00

Abstract: The present invention relates to an oscillator circuit and a method of controlling the oscillation frequency of an in-phase signal and a quadrature signal. First oscillator means (2) with a first differential oscillator circuit and a first differential coupling circuit are provided for generating the quadrature signal. Furthermore, second oscillator means (4) with a second differential oscillator circuit and a second differential coupling circuit are provided for generating the in-phase signal. A frequency control means is provided for varying the oscillation frequency of the in-phase signal and the quadrature signal by controlling at least one of a common-mode current and a tail current of the first and second oscillator means. Thereby, a high-frequency IQ oscillator with high linearity is obtained.

Abstract translation: 本发明涉及振荡器电路和控制同相信号和正交信号的振荡频率的方法。 提供具有第一差分振荡器电路和第一差分耦合电路的第一振荡器装置（2），用于产生正交信号。 此外，提供具有第二差分振荡器电路和第二差分耦合电路的第二振荡器装置（4），用于产生同相信号。 提供频率控制装置，用于通过控制第一和第二振荡器装置的共模电流和尾电流中的至少一个来改变同相信号和正交信号的振荡频率。 由此，得到高线性的高频IQ振荡器。

公开(公告)号：US08106720B2

公开(公告)日：2012-01-31

申请号：US12093704

申请日：2006-11-01

Applicant: Mihai A. T. Sanduleanu ,  Ram P. Aditham ,  Eduard F. Stikvoort

Inventor： Mihai A. T. Sanduleanu ,  Ram P. Aditham ,  Eduard F. Stikvoort

IPC: H03C3/38 ,  H03C1/50 ,  H04B1/02

CPC classification number: H03C5/00

Abstract: The present invention relates to a polar modulation apparatus and method, in which a polar-modulated signal is generated based on separately processed phase modulation (PM) and amplitude modulation (AM) components of an input signal. An amplified polar modulated output signal is generated in accordance with the phase modulation and amplitude modulation components by using a differential power amplifier circuitry and supplying an amplified phase modulation component to a differential input of the differential power amplifier circuitry. A bias input of the differential power amplifier circuitry is controlled based on the amplitude modulation component, so as to modulate a common-mode current of the differential power amplifier circuitry. Thereby, a new concept of a polar modulator with static DC-DC converter and power and/or efficiency and/or linearity controlled output power amplifier can be achieved.

Abstract translation: 本发明涉及极化调制装置和方法，其中基于输入信号的分别处理的相位调制（PM）和调幅（AM）分量产生极调调制信号。 通过使用差分功率放大器电路，根据相位调制和幅度调制分量产生放大的极化调制输出信号，并将放大的相位调制分量提供给差分功率放大器电路的差分输入。 基于幅度调制分量来控制差分功率放大器电路的偏置输入，以便调制差分功率放大器电路的共模电流。 因此，可以实现具有静态DC-DC转换器和功率和/或效率和/或线性控制的输出功率放大器的极性调制器的新概念。

公开(公告)号：US20090295465A1

公开(公告)日：2009-12-03

申请号：US11719209

申请日：2005-11-08

Applicant: Lorenzo Tripodi ,  Mihai A .T. Sanduleanu ,  Pieter G. Blanken

Inventor： Lorenzo Tripodi ,  Mihai A .T. Sanduleanu ,  Pieter G. Blanken

IPC: G05F1/10

CPC classification number: G05F3/262

Abstract: The present invention relates to an improved PTAT current source and a respective method for generating a PTAT current. Opportune collector currents are generated and forced in two transistors exploiting the logarithmic relation between the base-emitter voltage and the collector current of a transistor. A resistor senses a voltage difference between the base-emitter voltages of the two transistors, which can have either the same or different areas. A fraction of the current flowing through the resistor is forced into a transistor collector and mirrored by an output transistor for providing an output current. By this principle an all npn-transistor PTAT current source can be provided that does not need pup transistors as in conventional PTAT current sources. The invention is generally applicable to a variety of different types of integrated circuits needing a PTAT current reference, especially in modern advanced technologies as InP and GaAs where p-type devices are not available. For example, the PTAT current source circuit of the invention can be used in radio frequency power amplifiers, in radio frequency tag circuits, in a satellite microwave front-end.

Abstract translation: 本发明涉及一种改进的PTAT电流源和用于产生PTAT电流的相应方法。 利用晶体管的基极 - 发射极电压和集电极电流之间的对数关系，两个晶体管产生并强制采集集电极电流。 电阻器感测两个晶体管的基极 - 发射极之间的电压差，其可以具有相同或不同的面积。 流过电阻器的电流的一小部分被迫进入晶体管集电极并由输出晶体管镜像，以提供输出电流。 通过该原理，可以提供所有npn晶体管PTAT电流源，其不像传统的PTAT电流源那样不需要小型晶体管。 本发明通常适用于需要PTAT电流参考的各种不同类型的集成电路，特别是在p型器件不可用的InP和GaAs的现代先进技术中。 例如，本发明的PTAT电流源电路可以用于卫星微波前端的射频功率放大器，射频标签电路中。

公开(公告)号：US20080252381A1

公开(公告)日：2008-10-16

申请号：US11720319

申请日：2005-11-24

Applicant: Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

Inventor： Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

IPC: H03F3/04

CPC classification number: H03F1/3211 ,  H03F1/22 ,  H03F3/19 ,  H03F3/30 ,  H03F3/343 ,  H03F3/345 ,  H03F3/45 ,  H03F2200/06 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/513

Abstract: A BALUN circuit (20) for low voltage operation for receiving single ended input signal at an input terminal (24) and providing a differential output signal across a pair of output terminals (OUT+, OUT−) is disclosed. The BALUN circuit (20) comprises a first branch including an input terminal (24) for receiving a single ended input voltage signal (RFin), a transistor (Q1), a resistance (R1) (28), a resistance (RL), and an output terminal (OUT+). A second branch includes a transistor (Q3), a resistance (RL) and an output terminal (OUT−). An operational amplifier (26) maintains current flowing through the resistances RL in the first and second branches substantially equal to each other, in dependence upon the output voltage signal across the output terminals (OUT+, OUT−).

Abstract translation: 公开了一种用于在输入端子（24）处接收单端输入信号并且在一对输出端子（OUT +，OUT-）之间提供差分输出信号的用于低电压操作的BALUN电路（20）。 BALUN电路（20）包括第一分支，其包括用于接收单端输入电压信号（RFin）的输入端子（24），晶体管（Q1），电阻（R 1）（28），电阻（RL ）和输出端子（OUT +）。 第二分支包括晶体管（Q 3），电阻（RL）和输出端（OUT-）。 运算放大器（26）根据输出端（OUT +，OUT-）两端的输出电压信号，保持流经第一和第二分支中的电阻RL的电流基本相等。

公开(公告)号：US08736395B2

公开(公告)日：2014-05-27

申请号：US13332932

申请日：2011-12-21

Applicant: Mihai A. T Sanduleanu ,  Ram P. Aditham ,  Eduard F. Stikvoort

Inventor： Mihai A. T Sanduleanu ,  Ram P. Aditham ,  Eduard F. Stikvoort

IPC: H03C3/38 ,  H03C1/50 ,  H04B1/02

CPC classification number: H03C5/00

Abstract: The present invention relates to a polar modulation apparatus and method, in which a polar-modulated signal is generated based on separately processed phase modulation (PM) and amplitude modulation (AM) components of an input signal. An amplified polar modulated output signal is generated in accordance with the phase modulation and amplitude modulation components by using a differential power amplifier circuitry(30) and supplying an amplified phase modulation component to a differential input of the differential power amplifier circuitry(30). A bias input of the differential power amplifier circuitry(30) is controlled based on the amplitude modulation component, so as to modulate a common-mode current of the differential power amplifier circuitry(30). Thereby, a new concept of a polar modulator with static DC-DC converter and power and/or efficiency and/or linearity controlled output power amplifier can be achieved.

Abstract translation: 本发明涉及极化调制装置和方法，其中基于输入信号的分别处理的相位调制（PM）和调幅（AM）分量产生极调调制信号。 通过使用差分功率放大器电路（30）根据相位调制和幅度调制分量产生放大的极化调制输出信号，并将放大的相位调制分量提供给差分功率放大器电路（30）的差分输入。 基于幅度调制分量来控制差分功率放大器电路（30）的偏置输入，以便调制差分功率放大器电路（30）的共模电流。 因此，可以实现具有静态DC-DC转换器和功率和/或效率和/或线性控制的输出功率放大器的极性调制器的新概念。

公开(公告)号：US07898352B2

公开(公告)日：2011-03-01

申请号：US12293812

申请日：2007-03-26

Applicant: Jan Vromans ,  Gerben W. De Jong ,  Mihai A. T. Sanduleanu

Inventor： Jan Vromans ,  Gerben W. De Jong ,  Mihai A. T. Sanduleanu

IPC: H03C3/00

CPC classification number: H03C5/00

Abstract: The present invention relates in general to transferring the envelope information of a polar modulated signal to a varying pulsewidth signal, while the phase modulation is direct transferred to the phase modulation of this PWM signal. Accordingly, the resultant signal is a PWM-PPM-signal. Such a signal can efficiently amplified by use of switching amplifying stages. By the present invention four pre-distorted baseband signals are applied basically to 4 linear RF mixers and a two adders, which are, the only needed external RF building blocks to build the modulator according to the invention. That is, the basic idea of the invention resides in the way of modulation of the four baseband signals and the way of combining of the RF modulated signals.

Abstract translation: 本发明一般涉及将极化调制信号的包络信息传送到变化脉冲宽度信号，同时将相位调制直接传送到该PWM信号的相位调制。 因此，所得到的信号是PWM-PPM信号。 这样的信号可以通过使用开关放大级级而被有效地放大。 通过本发明，基本上将四个预失真基带信号应用于4个线性RF混频器和两个加法器，其是根据本发明构建调制器的唯一需要的外部RF构建块。 也就是说，本发明的基本思想在于四个基带信号的调制方式和RF调制信号的组合方式。

公开(公告)号：US20100231314A1

公开(公告)日：2010-09-16

申请号：US12293812

申请日：2007-03-26

Applicant: Jan Vromans ,  Gerben W. De Jong ,  Mihai A. T. Sanduleanu

Inventor： Jan Vromans ,  Gerben W. De Jong ,  Mihai A. T. Sanduleanu

IPC: H03C3/00

CPC classification number: H03C5/00

Abstract: The present invention relates in general to transferring the envelope information of a polar modulated signal to a varying pulsewidth signal, while the phase modulation is direct transferred to the phase modulation of this PWM signal. Accordingly, the resultant signal is a PWM-PPM-signal. Such a signal can efficiently amplified by use of switching amplifying stages. By the present invention four pre-distorted baseband signals are applied basically to 4 linear RF mixers and a two adders, which are, the only needed external RF building blocks to build the modulator according to the invention. That is, the basic idea of the invention resides in the way of modulation of the four baseband signals and the way of combining of the RF modulated signals.

Abstract translation: 本发明一般涉及将极化调制信号的包络信息传送到变化脉冲宽度信号，同时将相位调制直接传送到该PWM信号的相位调制。 因此，所得到的信号是PWM-PPM信号。 这样的信号可以通过使用开关放大级级而被有效地放大。 通过本发明，基本上将四个预失真基带信号应用于4个线性RF混频器和两个加法器，其是根据本发明构建调制器的唯一需要的外部RF构建块。 也就是说，本发明的基本思想在于四个基带信号的调制方式和RF调制信号的组合方式。

公开(公告)号：US07760028B2

公开(公告)日：2010-07-20

申请号：US11720319

申请日：2005-11-24

Applicant: Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

Inventor： Mihai A. T. Sanduleanu ,  Eduard F. Stikvoort

IPC: H03F3/45

CPC classification number: H03F1/3211 ,  H03F1/22 ,  H03F3/19 ,  H03F3/30 ,  H03F3/343 ,  H03F3/345 ,  H03F3/45 ,  H03F2200/06 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/513

Abstract: A BALUN circuit (20) for low voltage operation for receiving single ended input signal at an input terminal (24) and providing a differential output signal across a pair of output terminals (OUT+, OUT−) is disclosed. The BALUN circuit (20) comprises a first branch including an input terminal (24) for receiving a single ended input voltage signal (RFin), a transistor (Q1), a resistance (R1) (28), a resistance (RL), and an output terminal (OUT+). A second branch includes a transistor (Q3), a resistance (RL) and an output terminal (OUT−). An operational amplifier (26) maintains current flowing through the resistances RL in the first and second branches substantially equal to each other, in dependence upon the output voltage signal across the output terminals (OUT+, OUT−).

Abstract translation: 公开了一种用于在输入端子（24）处接收单端输入信号并且在一对输出端子（OUT +，OUT-）之间提供差分输出信号的用于低电压操作的BALUN电路（20）。 BALUN电路（20）包括第一分支，其包括用于接收单端输入电压信号（RFin）的输入端（24），晶体管（Q1），电阻（R1）（28），电阻（RL） 和输出端（OUT +）。 第二分支包括晶体管（Q3），电阻（RL）和输出端子（OUT-）。 运算放大器（26）根据输出端（OUT +，OUT-）两端的输出电压信号，保持流经第一和第二分支中的电阻RL的电流基本相等。

公开(公告)号：US08350737B2

公开(公告)日：2013-01-08

申请号：US13004883

申请日：2011-01-12

Applicant: Mihai A. T. Sanduleanu ,  Jean-Oliver Plouchart

Inventor： Mihai A. T. Sanduleanu ,  Jean-Oliver Plouchart

IPC: H03M1/10

CPC classification number: H03M1/1061 ,  H03M1/365

Abstract: A flash analog to digital converter and a method and system for dynamically calibrating the flash analog to digital converter. The analog to digital converter may include a track and hold circuit and a plurality of comparators. The analog to digital converter may also include an under-sampling circuit configured to convert a digitized reference signal into an under-sampled digitized reference signal with a frequency of the calibration frequency divided by a positive number M. The under-sampling circuit may be further configured to calibrate a subsequent signal based on the under-sampled digitized reference signal.

Abstract translation: 闪存模数转换器和用于动态校准闪存模数转换器的方法和系统。 模数转换器可以包括轨道和保持电路以及多个比较器。 模数转换器还可以包括欠采样电路，其被配置为将校准频率的频率除以正数M将数字化参考信号转换为欠采样的数字化参考信号。欠采样电路可以进一步 被配置为基于欠采样的数字化参考信号校准后续信号。

公开(公告)号：US20120299632A1

公开(公告)日：2012-11-29

申请号：US13278367

申请日：2011-10-21

Applicant: Mihai A. T. Sanduleanu ,  Alberto Valdes Garcia

Inventor： Mihai A. T. Sanduleanu ,  Alberto Valdes Garcia

IPC: G06G7/12

CPC classification number: H03H11/30 ,  H03F1/3211 ,  H03F3/45183 ,  H03F2203/45352 ,  H03F2203/45466 ,  H03F2203/45576

Abstract: An amplifier, mixer, and method for input impedance matching and linearization. The transconductor includes a first differential transistor and a second differential transistor, including a first differential source and a second differential source electrically connected at a source node. The transconductor includes a pair of transmission lines including a first line of the pair of transmission lines electrically connected to the first of the two differential voltage inputs and a second line of the pair of transmission lines electrically connected to the second of the two differential voltage inputs. The pair of transmission lines is electrically connecting the two differential voltage inputs at a common node. The transconductor also includes a linearization unit including one or more linearization transistors. The one or more linearization transistors include a linearization gate electrically connected to the common node. The linearization unit is configured to supply a virtual ground at the source node.

Abstract translation: 一种用于输入阻抗匹配和线性化的放大器，混频器和方法。 跨导体包括第一差分晶体管和第二差分晶体管，包括在源节点电连接的第一差分源和第二差分源。 跨导体包括一对传输线，包括电连接到两个差分电压输入中的第一个的一对传输线中的第一条线，以及电连接到两个差分电压输入中的第二个的一对传输线的第二条线 。 一对传输线在公共节点处电连接两个差分电压输入。 跨导体还包括包括一个或多个线性化晶体管的线性化单元。 一个或多个线性化晶体管包括电连接到公共节点的线性化栅极。 线性化单元被配置为在源节点处提供虚拟接地。