公开(公告)号：CA2386885C

公开(公告)日：2013-12-03

申请号：CA2386885

申请日：2000-10-11

Applicant: ATHEROS COMM INC

Inventor： MENG TERESA H ,  SU DAVID ,  ZARGARI MASOUD

IPC: H04L7/00 ,  H04L27/233 ,  H03J7/04 ,  H04J3/06 ,  H04L27/00

Abstract: The present invention aims at eliminating the effects of frequency offsets between two transceivers by adjusting frequencies used during transmission. In this invention, methods for correcting the carrier frequency and the sampling frequency during transmission are provided, including both digital and analog implementations of such methods. The receiver determines the relative frequency offset between the transmitter and the receiver, and uses this information to correct this offset when the receiver transmits its data to the original transmitter in the return path, so that the signal received by the original transmitter is in sampling and carrier frequency lock with the original transmitter's local frequency reference.

公开(公告)号：WO0188956A3

公开(公告)日：2002-03-28

申请号：PCT/US0115399

申请日：2001-05-10

Applicant: ATHEROS COMM INC ,  YUE CHIK PATRICK ,  ZARGARI MASOUD ,  SU DAVID

Inventor： YUE CHIK PATRICK ,  ZARGARI MASOUD ,  SU DAVID

IPC: H01L23/552 ,  H01L23/66 ,  H01L27/095 ,  H01L23/48 ,  H01L23/58 ,  H01L27/10 ,  H01L29/76

CPC classification number: H01L23/66 ,  H01L23/552 ,  H01L2223/6688 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A radio-frequency (RF) integrated circuit is described. In one embodiment, the IC comprises multiple metal layers forming multiple transistors on a non-epitaxial substrate. The transistors are step and mirror symmetric. Also, the RF signal lines are on a top metal layer above all other metal layers and the power and ground planes are on a bottom metal layer below all other metal layers. The top and bottom metal layers are separated by a shield that extends beyond the RF signal lines by a distance that is at least the same distance that the shield is away from the RF lines. Low frequency signals are on signal lines below the top metal layer.

Abstract translation: 描述了射频（RF）集成电路。 在一个实施例中，IC包括在非外延衬底上形成多个晶体管的多个金属层。 晶体管是阶梯式和镜面对称的。 此外，RF信号线位于所有其它金属层上的顶部金属层上，并且电源和接地平面位于所有其它金属层下方的底部金属层上。 顶部和底部金属层被屏蔽层隔开，该屏蔽件延伸超过RF信号线一段至少与屏蔽层远离RF线路的距离至少相等的距离。 低频信号位于顶部金属层下方的信号线上。

公开(公告)号：AU6151101A

公开(公告)日：2001-11-26

申请号：AU6151101

申请日：2001-05-10

Applicant: ATHEROS COMM INC

Inventor： YUE CHIK PATRICK ,  ZARGARI MASOUD ,  SU DAVID

IPC: H01L23/552 ,  H01L23/66

Abstract: A radio-frequency (RF) integrated circuit is described. In one embodiment, the IC comprises multiple metal layers forming multiple transistors on a non-epitaxial substrate. The transistors are step and mirror symmetric. Also, the RF signal lines are on a top metal layer above all other metal layers and the power and ground planes are on a bottom metal layer below all other metal layers. The top and bottom metal layers are separated by a shield that extends beyond the RF signal lines by a distance that is at least the same distance that the shield is away from the RF lines. Low frequency signals are on signal lines below the top metal layer.

公开(公告)号：CA2386885A1

公开(公告)日：2001-04-19

申请号：CA2386885

申请日：2000-10-11

Applicant: ATHEROS COMM INC

Inventor： SU DAVID ,  MENG TERESA H ,  ZARGARI MASOUD

IPC: H04L7/00 ,  H03J7/04 ,  H04L27/00 ,  H04L27/233 ,  H04J3/06

Abstract: The present invention aims at eliminating the effects of frequency offsets between two transceivers by adjusting frequencies used during transmission. In this invention, methods for correcting the carrier frequency and the samplin g frequency during transmission are provided, including both digital and analo g implementations of such methods. The receiver determines the relative frequency offset between the transmitter and the receiver, and uses this information to correct this offset when the receiver transmits its data to t he original transmitter in the return path, so that the signal received by the original transmitter is in sampling and carrier frequency lock with the original transmitter's local frequency reference.

公开(公告)号：AU4553301A

公开(公告)日：2001-09-24

申请号：AU4553301

申请日：2001-03-08

Applicant: ATHEROS COMM INC

Inventor： NADEN REX A ,  ZARGARI MASOUD

IPC: H04L12/28 ,  H04L29/06 ,  H04L29/08

Abstract: A high-speed wireless link communicates data between a central storage system and a mobile remote system. The wireless link further communicates data between two mobile remote systems. Both the central storage system and the mobile remote system include a central processor, a memory, a transceiver, and a means for data output. The high-speed wireless link is established between the transceivers. Data are loaded, processed and stored on the central storage system. The data, including musical data in MP3 format, are automatically downloaded at high transmission speeds from the central storage system to the mobile remote system.

公开(公告)号：AU3087301A

公开(公告)日：2001-07-24

申请号：AU3087301

申请日：2001-01-08

Applicant: ATHEROS COMM INC

Inventor： ZARGARI MASOUD

IPC: H03D7/16 ,  H03D7/14 ,  H04B1/10 ,  H04B1/26 ,  H04B1/28

公开(公告)号：AU1250601A

公开(公告)日：2001-04-10

申请号：AU1250601

申请日：2000-09-08

Applicant: ATHEROS COMM INC

Inventor： SU DAVID K ,  ZARGARI MASOUD

IPC: H03D7/14

Abstract: A mixing apparatus includes a Gilbert cell connected to a first load and a second load. In one embodiment each load contains transistors that are configured as a diode and a triode, where these circuits are additively combined to achieve substantially linear voltage-current characteristics over a predetermined range. The mixing apparatus takes two pairs of differential inputs and produces a pair of differential outputs. Because of the substantial linearity of the loads, the inputs and outputs of the mixing apparatus are acceptable over a relatively large range of input settings. In other embodiments each load may contain a transistor configured as a triode and a resistor, where these circuits are likewise additively combined to achieve substantially linear voltage-current characteristics over a predetermined range.

公开(公告)号：WO0169889A3

公开(公告)日：2002-07-04

申请号：PCT/US0107465

申请日：2001-03-08

Applicant: ATHEROS COMM INC

Inventor： NADEN REX A ,  ZARGARI MASOUD

IPC: H04L12/28 ,  H04L29/06 ,  H04L29/08 ,  H04H1/00

CPC classification number: H04L12/66 ,  H04L29/06 ,  H04L67/06 ,  H04L67/12 ,  H04L67/42 ,  H04L69/329 ,  H04W4/00

Abstract: A wireless link provides low-cost high-speed communication between a central storage system and a remote system housed preferably in a mobile vehicle such as an automobile or between two mobile vehicles. Data, including musical data in MP3 format, may be automatically downloaded at high transmission speeds from a variety of sources available to the central storage system. Storage and retrieval of data may be accomplished using inexpensive highly compact memories or flash memory cards.

Abstract translation: 无线链路在中央存储系统和优选地在诸如汽车之类的移动车辆或两个移动车辆之间的远程系统之间提供低成本的高速通信。 包括MP3格式的音乐数据的数据可以以高传输速度从各种可用的来源自动下载到中央存储系统。 可以使用廉价的高度紧凑的存储器或闪存卡来实现数据的存储和检索。

公开(公告)号：WO0118953A3

公开(公告)日：2001-12-13

申请号：PCT/US0040852

申请日：2000-09-08

Applicant: ATHEROS COMM INC

Inventor： SU DAVID K ,  ZARGARI MASOUD

IPC: H03D7/14

CPC classification number: H03D7/1441 ,  H03D7/1408 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0043

Abstract: A mixing apparatus includes a Gilbert cell connected to a first load and a second load. In one embodiment each load contains transistors that are configured as a diode and a triode, where these circuits are additively combined to achieve substantially linear voltage-current characteristics over a predetermined range. The mixing apparatus takes two pairs of differential inputs and produces a pair of differential outputs. Because of the substantial linearity of the loads, the inputs and outputs of the mixing apparatus are acceptable over a relatively large range of input settings. In other embodiments each load may contain a transistor configured as a triode and a resistor, where these circuits are likewise additively combined to achieve substantially linear voltage-current characteristics over a predetermined range.

Abstract translation: 混合装置包括连接到第一负载和第二负载的吉尔伯特电池。 在一个实施例中，每个负载包含被配置为二极管和三极管的晶体管，其中这些电路被加法组合以在预定范围内实现基本上线性的电压 - 电流特性。 混合装置采用两对差分输入，并产生一对差分输出。 由于负载的实质线性，混合装置的输入和输出在相对大的输入设置范围内是可以接受的。 在其他实施例中，每个负载可以包含配置为三极管和电阻器的晶体管，其中这些电路同样地被加法组合以在预定范围内实现基本上线性的电压 - 电流特性。

公开(公告)号：EP1249075A4

公开(公告)日：2007-08-22

申请号：EP01902997

申请日：2001-01-08

Applicant: ATHEROS COMM INC

Inventor： ZARGARI MASOUD

IPC: H03D7/16 ,  H04B1/28 ,  H03D7/14 ,  H03D7/18 ,  H04B1/10 ,  H04B1/26

CPC classification number: H04B1/28 ,  H03D7/1441 ,  H03D7/1483 ,  H03D7/165 ,  H03D2200/0023

Abstract: A radio-frequency (RF) front-end comprises a low noise amplifier LNA (105), a first mixer (106) and an I/Q quadrature mixer (108). The LNA amplifies a received signal at a carrier frequency, the LNA having inductive loads (112). The first mixer, coupled to the LNA, mixes an amplified received signal with a first local oscillator (LO) signal to down convert the amplified signal to an intermediate frequency (IF). The first mixer has inductive loads (113). The first frequency is related to the carrier frequency such that an image channel associated with the carrier and the LO frequency is outside the bandwidth of the inductive loads of the LNA. The I/Q quadrature mixer stage has a second mixer (108A) and a third mixer (108B) coupled to the first mixer. The I/Q quadrature mixer converts the IF signal to I and Q signals using a second LO signal related to the first LO signal.