公开(公告)号：US07259625B2

公开(公告)日：2007-08-21

申请号：US10907537

申请日：2005-04-05

申请人： David I. Sanderson

发明人： David I. Sanderson

IPC分类号： H03F3/45

CPC分类号： H03B5/1841 ,  H01F17/0006 ,  H01F2017/0046 ,  H01F2017/008 ,  H01F2021/125 ,  H03B5/1209 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03H11/1213

摘要： The present invention provides a differentially driven monolithic inductor circuit having a shield differentially driven by phase shift buffers and a single-ended monolithic inductor circuit having single-ended shields driven by phase shift buffers, both inductor circuit types providing high Quality factor (Q) at operating frequencies in the multi-GHz range and circuits incorporating the same.

摘要翻译： 本发明提供了一种差分驱动的单片电感器电路，其具有由相移缓冲器差分驱动的屏蔽和具有由相移缓冲器驱动的单端屏蔽的单端单片电感器电路，两种电感器电路类型提供高品质因数（Q）在 在多GHz范围内的工作频率和包含该频率的电​​路。

公开(公告)号：US07227425B2

公开(公告)日：2007-06-05

申请号：US11292546

申请日：2005-12-02

申请人： Sheng-Lyang Jang ,  Shao-Hua Lee

发明人： Sheng-Lyang Jang ,  Shao-Hua Lee

IPC分类号： H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1203 ,  H03B5/1209 ,  H03B5/1243 ,  H03B5/1265

摘要： The present invention is related with a dual-band LC voltage controlled oscillator, which utilizes a substantial amount of feedback loop paths in the circuit. The circuit is a core of a substantial amount of communication ICs. The voltage controlled oscillator can provide wide-band or dual-band radio frequency generation, and it utilizes a switch controlled circuit to select one of the feedback loops in order to choose the assigned frequency band output. Generic wide-band or dual-band LC voltage controlled oscillations are obtained by switching parallel-connected capacitors or switching inductor array, in contrast, the present invention is used for switching several parallel connected feedback loops, each of which associated with an LC tank forms an oscillation frequency output. Utilizing the switch to control the feedback loop and integrating different band oscillator circuit is capable of saving chip's size and power consumption.

摘要翻译： 本发明涉及一种双频LC压控振荡器，其利用电路中大量的反馈环路径。 该电路是大量通信IC的核心。 压控振荡器可以提供宽带或双频射频发生，并且利用开关控制电路来选择一个反馈回路以便选择所分配的频带输出。 通过开关并联电容器或开关电感器阵列来获得通用宽带或双频带LC电压控制振荡，相反，本发明用于切换几个并联连接的反馈回路，其中每一个与LC槽形成相关联 振荡频率输出。 利用开关控制反馈回路和集成不同频带振荡器电路，可以节省芯片的尺寸和功耗。

公开(公告)号：US07190239B2

公开(公告)日：2007-03-13

申请号：US11204166

申请日：2005-08-16

申请人： Ryuichi Fujimoto ,  Tetsuro Itakura

发明人： Ryuichi Fujimoto ,  Tetsuro Itakura

IPC分类号： H03B1/00

CPC分类号： H03B5/1841 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1256 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/1296 ,  H03F3/45089 ,  H03F3/45183 ,  H03F3/45188 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45318 ,  H03F2203/45362 ,  H03F2203/45386 ,  H03F2203/45591 ,  H03F2203/45638 ,  H03G1/0029 ,  H03H11/48 ,  H03H11/485 ,  H03J2200/10

摘要： An amplifier comprises an amplifier circuit which comprises a first inductor as an impedance element for degeneration, and a control circuit which has a second inductor electro-magnetically connected to the first inductor, and changes a control current flowing through the second inductor to change an inductance value of the first inductor, thereby changing amplification characteristics of the amplifier circuit.

摘要翻译： 放大器包括放大器电路，其包括作为退化的阻抗元件的第一电感器，以及具有与第一电感器电磁连接的第二电感器的控制电路，并且改变流过第二电感器的控制电流以改变电感 值，从而改变放大器电路的放大特性。

公开(公告)号：US20060091969A1

公开(公告)日：2006-05-04

申请号：US10978972

申请日：2004-11-01

申请人： John Kenney ,  Viswabharath Reddy ,  Ward Titus

发明人： John Kenney ,  Viswabharath Reddy ,  Ward Titus

IPC分类号： H03B5/08

CPC分类号： H03B5/1228 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/124 ,  H03B5/1265 ,  H03B2201/0266

摘要： A new clock driver is described for the use in the phase detector of a clock and data recovery circuit (CDR). By building a resonant LC tank, whose center frequency is similar to the clock frequency, a low power clock driver is realized. A method based upon minimizing power consumption is described for determining the value of the programmable capacitance. A programmable capacitance adjusts the center frequency of the tank so it matches the frequency of the clock and a finite state machine at startup determines the value of this programmable capacitance. A criterion for tuning the center frequency of the tank is to choose the capacitance which leads to the lowest power consumption. A low Q tank affords a reasonable compromise between power efficiency and performance in the CDR circuit.

公开(公告)号：US20060049871A1

公开(公告)日：2006-03-09

申请号：US10934164

申请日：2004-09-03

申请人： Hans-Martin Rein ,  Hao Li

发明人： Hans-Martin Rein ,  Hao Li

IPC分类号： H03F3/45

CPC分类号： H03F1/0205 ,  H03B5/1209 ,  H03B5/1228 ,  H03B5/124 ,  H03F3/191 ,  H03F3/195 ,  H03F3/4508 ,  H03F3/50 ,  H03F2203/45704 ,  H03F2203/45706 ,  H03L7/099

摘要： A multi-stage output buffer is disclosed having a differential input and a differential output. The output buffer includes an emitter follower circuit coupled to the differential input that is configured to provide a substantially high input impedance at an input thereof, and provide a substantially low output impedance at an output thereof. An emitter coupled pair circuit is coupled to the output of the emitter follower circuit, and is configured to amplify the signal and further isolate an input circuit when coupled to the differential input of the multi-stage output buffer from an external load when coupled to the differential output thereof. The buffer further includes a base-grounded transistor circuit coupled to an output of the emitter coupled pair circuit and having an output coupled to the differential output of the multi-stage output buffer. The base-grounded transistor circuit is configured to reduce a load impedance at the output of the emitter coupled pair circuit, thereby improving a speed thereof. The base-grounded transistor circuit further improves decoupling of the external load from an input circuit when coupled thereto and increases the output power.

摘要翻译： 公开了具有差分输入和差分输出的多级输出缓冲器。 输出缓冲器包括耦合到差分输入的射极跟随器电路，其被配置为在其输入处提供基本上高的输入阻抗，并且在其输出处提供基本上低的输出阻抗。 发射极耦合对电路耦合到射极跟随器电路的输出端，并且被配置为放大信号并进一步隔离输入电路，当耦合到与多级输出缓冲器的差分输入耦合到多级输出缓冲器 差分输出。 缓冲器还包括耦合到发射极耦合对电路的输出的基极接地晶体管电路，并且具有耦合到多级输出缓冲器的差分输出的输出。 基极接地晶体管电路被配置为减小发射极耦合对电路的输出处的负载阻抗，从而提高其速度。 基极接地晶体管电路进一步改善外部负载与输入电路耦合时的去耦耦合，并提高输出功率。

公开(公告)号：US20060038629A1

公开(公告)日：2006-02-23

申请号：US11204118

申请日：2005-08-15

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03B5/12

CPC分类号： H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B2200/0048

摘要： A local oscillating circuit includes an integrated circuit that has an oscillating transistor, protection diodes against electrostatic damage, and first and second terminals each being connected to a base and a collector of the oscillating transistor, cathodes of the protection diodes being respectively connected to the first and second terminals and anodes thereof being connected to a ground; and a resonating circuit that is provided outside the integrated circuit and is connected between the first and second terminals. A reverse-biasing voltage is applied to each of the cathodes of the protection diodes when VHF high-band signals are received while a voltage is not applied to each of the cathodes when VHF low-band signals are received.

摘要翻译： 本地振荡电路包括具有振荡晶体管的集成电路，防止静电损坏的保护二极管，以及各自连接到振荡晶体管的基极和集电极的第一和第二端子，保护二极管的阴极分别连接到第一 并且其第二端子和阳极连接到地面; 以及设置在集成电路外部并连接在第一和第二端子之间的谐振电路。 当接收VHF高频带信号时，当接收到VHF低频带信号时，不对每个阴极施加电压时，反向偏压电压施加到保护二极管的每个阴极。

公开(公告)号：US20050219005A1

公开(公告)日：2005-10-06

申请号：US11094534

申请日：2005-03-31

申请人： Hans-Peter Waible

发明人： Hans-Peter Waible

IPC分类号： H01L29/06 ,  H03B5/02 ,  H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1209 ,  H03B5/1231 ,  H03B5/1243

摘要： An oscillator includes a resonant circuit of at least one inductance device and at least one tunable capacitance. The tunable capacitance is implemented through diffusion capacitances of at least one current-carrying transistor. The tunable capacitance has a first differential amplifier having a first transistor and a second transistor and a second differential amplifier having a third transistor and a fourth transistor Electrical properties of the first transistor and second transistor are complementary to electrical properties of the third transistor and fourth transistor, and control connections of the first transistor and the third transistor are connected to one another. Control connections of the second transistor and the fourth transistor are connected to one another. Second current connections of the first transistor and the third transistor are connected to one another, and second current connections of the second transistor and the fourth transistor are connected to one another.

摘要翻译： 振荡器包括至少一个电感器件的谐振电路和至少一个可调谐电容。 可调电容通过至少一个载流晶体管的扩散电容来实现。 可调电容具有具有第一晶体管和第二晶体管的第一差分放大器和具有第三晶体管和第四晶体管的第二差分放大器第一晶体管和第二晶体管的电性能与第三晶体管和第四晶体管的电性能互补 并且第一晶体管和第三晶体管的控制连接彼此连接。 第二晶体管和第四晶体管的控制连接彼此连接。 第一晶体管和第三晶体管的第二电流连接彼此连接，第二晶体管和第四晶体管的第二电流连接彼此连接。

公开(公告)号：US20050212610A1

公开(公告)日：2005-09-29

申请号：US10528254

申请日：2003-08-08

申请人： Johannes Hubertus Brekelmans

发明人： Johannes Hubertus Brekelmans

IPC分类号： H03B5/12 ,  H03B5/00

CPC分类号： H03B5/1228 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1243

摘要： An LC oscillator (I) comprises a cross-coupled PMOS transistor pair (Ma, Mb) coupled to a pair of capacitors (Cva, Cvb) and a pair of inductances (La, Lb). To enhance the signal amplification of the oscillator, a pair of auxiliary transistor circuits (Qa, Qb; Na, Nb) is provided which are coupled between the drain and, preferably, the source of each PMOS transistor. The capacitors (Cva, Cvb) are preferably variable capacitors and the inductances (La, Lb) are preferably connected to ground to allow a enlarged tuning voltage range.

摘要翻译： LC振荡器（I）包括耦合到一对电容器（Cva，Cvb）和一对电感（La，Lb）的交叉耦合PMOS晶体管对（Ma，Mb）。 为了增强振荡器的信号放大，提供一对辅助晶体管电路（Qa，Qb; Na，Nb），其耦合在每个PMOS晶体管的漏极和优选地源极之间。 电容器（Cva，Cvb）优选地是可变电容器，并且电感（La，Lb）优选地连接到地，以允许扩大的调谐电压范围。

公开(公告)号：US06933518B2

公开(公告)日：2005-08-23

申请号：US10253361

申请日：2002-09-24

申请人： Glyn Braithwaite ,  Richard Hammond ,  Matthew Currie

发明人： Glyn Braithwaite ,  Richard Hammond ,  Matthew Currie

IPC分类号： H01L27/06 ,  H01L27/092 ,  H01L29/10 ,  H01L29/51 ,  H01L29/786 ,  H03B5/12 ,  H03K3/354 ,  H03L7/093 ,  H03L7/099 ,  H01L29/06

CPC分类号： H01L29/7378 ,  H01L27/0617 ,  H01L27/092 ,  H01L29/1054 ,  H01L29/517 ,  H01L29/518 ,  H01L29/78654 ,  H03B5/1203 ,  H03B5/1209 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/1228 ,  H03B5/1243 ,  H03K3/354 ,  H03L7/093 ,  H03L7/099

摘要： Circuits for processing radio frequency (“RF”) and microwave signals are fabricated using field effect transistors (“FETs”) that have one or more strained channel layers disposed on one or more planarized substrate layers. FETs having such a configuration exhibit improved values for, for example, transconductance and noise figure. RF circuits such as, for example, voltage controlled oscillators (“VCOs”), low noise amplifiers (“LNAs”), and phase locked loops (“PLLs”) built using these FETs also exhibit enhanced performance.

公开(公告)号：US06897734B2

公开(公告)日：2005-05-24

申请号：US10691986

申请日：2003-10-23

申请人： Samuel A. Tiller

发明人： Samuel A. Tiller

IPC分类号： H03B5/12 ,  H03B7/00 ,  H03B7/06 ,  H03D7/06 ,  H03D7/12 ,  H03D7/14 ,  H03B1/00

CPC分类号： H03D7/1433 ,  H03B5/1209 ,  H03B5/1231 ,  H03D7/1441 ,  H03D7/1458 ,  H03D2200/009

摘要： A device for providing the functionality of an oscillator and mixer is disclosed herein. The device uses a differential pair to provide first and second filter networks with a time varying signal. The first filer network generates an oscillating signal through the use of a generated negative resistance and provides the oscillating signal while filtering out unwanted signals. The second filter network receives the time varying input signal and the oscillating signal and provides a mixed output while preventing the transmission of oscillations at the oscillating signal frequency. A double balanced embodiment is also disclosed.

摘要翻译： 本文公开了一种用于提供振荡器和混频器的功能的装置。 该装置使用差分对来为第一和第二滤波器网络提供时变信号。 第一个滤波器网络通过使用产生的负电阻产生振荡信号，并提供振荡信号，同时滤除不需要的信号。 第二滤波器网络接收时变输入信号和振荡信号，并提供混合输出，同时防止在振荡信号频率下的振荡传输。 还公开了双重平衡的实施例。