公开(公告)号：US08103224B1

公开(公告)日：2012-01-24

申请号：US11900688

申请日：2007-09-12

Applicant: Shayan Faravash ,  Matthew C. Romney ,  Chee Kwang Quek ,  Robert A. Koupal ,  David A. Schwan ,  Nathaniel King, Jr.

Inventor： Shayan Faravash ,  Matthew C. Romney ,  Chee Kwang Quek ,  Robert A. Koupal ,  David A. Schwan ,  Nathaniel King, Jr.

IPC: H04B1/02

CPC classification number: H04B1/0458 ,  H04B1/0475

Abstract: An integrated transceiver for wireless applications has both a frequency determining means and a power amplifier. A transmission filter suppresses unwanted spurious outputs in an integrated circuit before a power amplifier stage amplifies and transmits the desired signal. A differential to single ended converter is able to be implemented to further enhance efficiency.

Abstract translation: 用于无线应用的集成收发器具有频率确定装置和功率放大器。 在功率放大器级放大并发送期望信号之前，发送滤波器抑制集成电路中的不想要的杂散输出。 能够实现差分到单端转换器，以进一步提高效率。

公开(公告)号：US07868710B1

公开(公告)日：2011-01-11

申请号：US12365528

申请日：2009-02-04

Applicant: Shayan Farahvash ,  Chee Kwang Quek ,  Monica Mak

Inventor： Shayan Farahvash ,  Chee Kwang Quek ,  Monica Mak

IPC: H03B5/32

CPC classification number: H03B5/366

Abstract: The present invention relates to a digitally-controlled crystal oscillator (DCXO) circuit having control circuitry, an active core, and a pair of thermometer-coded switched-capacitor circuits (TCSCCs), each of which is coupled to the active core and to a crystal. The active core, the crystal, and the pair of TCSCCs form a DCXO, which provides an output signal having an output frequency. Each TCSCC includes multiple capacitive elements, which are selected by a respective control signal from the control circuitry to control the output frequency. The DCXO circuit may be integrated into a digital integrated circuit (IC) without need for a digital-to-analog converter (DAC), and may be used with a wide range of crystal types. By using thermometer-coding, the pair of TCSCCs provides monotonic frequency tuning behavior. Further, by utilizing different types of tuning steps, the DCXO may have a wide tuning range with high resolution.

Abstract translation: 本发明涉及一种具有控制电路，有源芯和一对温度计编码的开关电容电路（TCSCC）的数字控制晶体振荡器（DCXO）电路，其中每一个耦合到有源核心和一个 水晶。 活性芯，晶体和一对TCSCC形成DCXO，其提供具有输出频率的输出信号。 每个TCSCC包括多个电容元件，这些电容元件由来自控制电路的相应控制信号选择以控制输出频率。 DCXO电路可以集成到数字集成电路（IC）中，而不需要数模转换器（DAC），并且可以与各种晶体类型一起使用。 通过使用温度计编码，该对TCSCC提供单调频率调谐行为。 此外，通过利用不同类型的调谐步骤，DCXO可以具有高分辨率的宽调谐范围。

公开(公告)号：US08373956B2

公开(公告)日：2013-02-12

申请号：US12943980

申请日：2010-11-11

Applicant: Michel J. Abou-Khalil ,  Kiran V. Chatty ,  Chee Kwang Quek ,  Robert J. Gauthier, Jr. ,  Nathaniel Peachey

Inventor： Michel J. Abou-Khalil ,  Kiran V. Chatty ,  Chee Kwang Quek ,  Robert J. Gauthier, Jr. ,  Nathaniel Peachey

IPC: H02H9/00 ,  H02H1/00 ,  H02H1/04 ,  H02H3/22 ,  H02H9/06

CPC classification number: H02H9/046

Abstract: A circuit and method for electrostatic discharge (ESD) protection. The ESD protection circuit includes: a silicon control rectifier (SCR) connected between a first voltage rail and a second voltage rail; one or more diodes connected in series in a forward conduction direction between the first voltage rail and a source of a p-channel field effect transistor (PFET); a drain of the PFET connected to the SCR and connected to ground through a current trigger device; and a control circuit connected to the gate of the PFET.

Abstract translation: 一种用于静电放电（ESD）保护的电路和方法。 ESD保护电路包括：连接在第一电压轨和第二电压轨之间的硅控制整流器（SCR）; 在第一电压轨和p沟道场效应晶体管（PFET）的源极之间沿正向传导方向串联连接的一个或多个二极管; 连接到SCR的PFET的漏极通过电流触发装置连接到地; 以及连接到PFET的栅极的控制电路。

公开(公告)号：US06898750B2

公开(公告)日：2005-05-24

申请号：US10052063

申请日：2002-01-16

Applicant: Jonathon Cheah ,  Chee Kwang Quek ,  Ee Hong Kwek

Inventor： Jonathon Cheah ,  Chee Kwang Quek ,  Ee Hong Kwek

IPC: G01R31/28 ,  G06F11/00

CPC classification number: G01R31/2884

Abstract: An in-chip monitoring method and apparatus are disclosed. In one embodiment the apparatus includes a test pad, a transmission gate and a plurality of test components coupled to the transmission gate. The transmission gate is attached to a substrate and adapted to receive a code word uniquely addressed to one of the plurality of test components. In a further embodiment, the transmission gate is further adapted to relay an output of the one of the plurality of test components to the test pad, in response to receipt of the code word.

Abstract translation: 公开了片内监视方法和装置。 在一个实施例中，该装置包括耦合到传输门的测试焊盘，传输门和多个测试部件。 传输门被附接到衬底并且适于接收唯一地寻址到多个测试部件之一的代码字。 在另一实施例中，响应于接收到代码字，传输门还适于将多个测试组件中的一个的输出中继到测试板。