公开(公告)号：US07277683B2

公开(公告)日：2007-10-02

申请号：US10541120

申请日：2004-01-08

Applicant: Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

Inventor： Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

IPC: H04B1/16

CPC classification number: H03B21/00 ,  H03B21/01 ,  H03B27/00 ,  H03D3/007 ,  H03H7/21 ,  H03H2007/0192 ,  H03J2200/17 ,  H03J2200/40 ,  H04B1/30

Abstract: The present invention relates generally to communications, and more specifically to a method and apparatus for generating local oscillator signals used for up- and down-conversion of RF (radio frequency) signals. A major problem in the design of modulators and demodulators, if the leakage of local oscillator (LO) signals into the received signal path. The invention presents a number of highly integratable circuits which resolve the LO leakage problem, using regenerative divider circuits acting on oscillator signals which are running at a multiple or fraction of the frequency of the desired LO signal, to generate in-phase (I) and quadrature (Q) mixing signals. Embodiments of these circuits also use harmonic subtraction and polyphase mixers, as well as virtual local oscillator TM (VLO) mixing signals. VLO mixing signals are signal pairs which emulate local oscillator signals by means of complementary mono-tonal and multi-tonal mixing signals.

Abstract translation: 本发明一般涉及通信，更具体地涉及用于产生用于RF（射频）信号的上变频和下变频的本地振荡器信号的方法和装置。 如果本地振荡器（LO）信号泄漏到接收信号路径中，调制器和解调器的设计中的主要问题。 本发明提出了许多高度可积分的电路，其解决了LO泄漏问题，使用作用于振荡器信号的再生分压器电路，该振荡器信号以期望LO信号的频率的多个或几分之一运行，以产生同相（I）和 正交（Q）混频信号。 这些电路的实施例也使用谐波减法和多相混频器，以及虚拟本地振荡器TM（VLO）混频信号。 VLO混合信号是通过互补单声道和多音调混合信号模拟本地振荡器信号的信号对。

公开(公告)号：US20060246861A1

公开(公告)日：2006-11-02

申请号：US10541120

申请日：2004-01-08

Applicant: Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

Inventor： Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

IPC: H03J7/32

CPC classification number: H03B21/00 ,  H03B21/01 ,  H03B27/00 ,  H03D3/007 ,  H03H7/21 ,  H03H2007/0192 ,  H03J2200/17 ,  H03J2200/40 ,  H04B1/30

Abstract: The present invention relates generally to communications, and more specifically to a method and apparatus for generating local oscillator signals used for up- and down-conversion of RF (radio frequency) signals. A major problem in the design of modulators and demodulators, if the leakage of local oscillator (LO) signals into the received signal path. The invention presents a number of highly integratable circuits which resolve the LO leakage problem, using regenerative divider circuits acting on oscillator signals which are running at a multiple or fraction of the frequency of the desired LO signal, to generate in-phase (I) and quadrature (Q) mixing signals. Embodiments of these circuits also use harmonic subtraction and polyphase mixers, as well as virtual local oscillator TM (VLO) mixing signals. VLO mixing signals are signal pairs which emulate local oscillator signals by means of complementary mono-tonal and multi-tonal mixing signals.

Abstract translation: 本发明一般涉及通信，更具体地涉及用于产生用于RF（射频）信号的上变频和下变频的本地振荡器信号的方法和装置。 如果本地振荡器（LO）信号泄漏到接收信号路径中，调制器和解调器的设计中的主要问题。 本发明提出了许多高度可积分的电路，其解决了LO泄漏问题，使用作用于振荡器信号的再生分压器电路，该振荡器信号以期望LO信号的频率的多个或几分之一运行，以产生同相（I）和 正交（Q）混频信号。 这些电路的实施例也使用谐波减法和多相混频器，以及虚拟本地振荡器TM（VLO）混频信号。 VLO混合信号是通过互补单声道和多音调混合信号模拟本地振荡器信号的信号对。

公开(公告)号：US20070223615A1

公开(公告)日：2007-09-27

申请号：US11387925

申请日：2006-03-24

Applicant: Sathwant Dosanjh ,  Tajinder Manku ,  Alan Holden

Inventor： Sathwant Dosanjh ,  Tajinder Manku ,  Alan Holden

IPC: H04L1/02 ,  H04B1/00

CPC classification number: H04B1/50 ,  H04B1/0057

Abstract: A transceiver interface architecture where the same RF transceiver can be used in wireless devices that support any number of standards, with or without receive diversity implementation. Each input port of the RF transceiver can be shared by a number of input signals, which effectively expands the number of available input ports. Input port sharing can be realized with virtual ports that receive two or more input signals and selectively pass one signal to the physical input port. The use of virtual ports allows for flexible wireless design implementations using the same RF transceiver, and in particular, for receive diversity implementations that inherently require dedicated input ports. The use of low cost and small area virtual ports obviates the need for larger and more costly RF receivers.

Abstract translation: 收发器接口架构，其中相同的RF收发器可以在支持任何数量的标准的无线设备中使用，具有或不具有接收分集实现。 RF收发器的每个输入端口可以由多个输入信号共享，这有效地扩展了可用输入端口的数量。 可以通过接收两个或更多输入信号的虚拟端口实现输入端口共享，并选择性地将一个信号传递到物理输入端口。 虚拟端口的使用允许使用相同的RF收发器的灵活的无线设计实现，并且特别地，用于固有地需要专用输入端口的接收分集实现。 使用低成本和小面积的虚拟端口消除了对更大和更昂贵的RF接收机的需要。

公开(公告)号：US07164897B2

公开(公告)日：2007-01-16

申请号：US10486830

申请日：2002-08-28

Applicant: Tajinder Manku ,  Yang Ling ,  William Kung

Inventor： Tajinder Manku ,  Yang Ling ,  William Kung

IPC: H04B1/18

CPC classification number: H04B1/28 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1466 ,  H03D7/1483 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/009

Abstract: An inexpensive, high-performance, fully-integrable, multi-standard transceiver with a topology including: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is modulated up, or demodulated down, using a pair of complementary, aperiodic mixing signals. The use of aperiodic mixing signals allows a fully-integrated transceiver to be built. Embodiments of the active mixer include those having electrically-adjustable performance and allowing multiple RF signal inputs. This allows the topology to be employed in multi-band, multi-frequency applications, while still providing high performance.

Abstract translation: 具有拓扑结构的便宜，高性能，完全可集成的多标准收发器，包括：有源混频器，其次是高通滤波器和无源混频器。 输入信号使用一对互补的非周期性混合信号进行调制或解调。 使用非周期混合信号可以建立一个完全集成的收发器。 有源混频器的实施例包括具有电可调节性能并允许多个RF信号输入的那些。 这允许在多频，多频应用中使用拓扑，同时仍然提供高性能。

公开(公告)号：US09014625B2

公开(公告)日：2015-04-21

申请号：US13482083

申请日：2012-05-29

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: H04B5/00

CPC classification number: H04B5/0062 ,  G06K19/0723 ,  H04B5/0075 ,  H04B5/0081

Abstract: An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A band-pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit. The incoming RF signal is modified as the coupled impedance of the inductive element is adjusted in accordance with the output of the variable impedance circuit.

Abstract translation: 用于修改输入射频（RF）信号的电感耦合装置包括电感元件。 可变阻抗电路包括电耦合到电感元件的输出端。 带通ΔΣ调制器耦合到可变阻抗电路并数字地控制可变阻抗电路的输出。 随着可变阻抗电路的输出调整电感元件的耦合阻抗，输入RF信号被修改。

公开(公告)号：US09014624B2

公开(公告)日：2015-04-21

申请号：US13482008

申请日：2012-05-29

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: H04B5/00

CPC classification number: H04B5/0062 ,  H04B5/0075 ,  H04B5/0081

Abstract: An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element for modifying the incoming RF signal in accordance with a coupled impedance characteristic of the inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A low pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit, the coupled impedance of the inductive element being adjusted based on the output of the variable impedance circuit.

Abstract translation: 用于修改输入射频（RF）信号的电感耦合装置包括用于根据电感元件的耦合阻抗特性修改输入RF信号的电感元件。 可变阻抗电路包括电耦合到电感元件的输出端。 低通量ΔΣ调制器耦合到可变阻抗电路并且数字地控制可变阻抗电路的输出，基于可变阻抗电路的输出来调整电感元件的耦合阻抗。

公开(公告)号：US08743746B2

公开(公告)日：2014-06-03

申请号：US13557507

申请日：2012-07-25

Applicant: Tajinder Manku ,  Zohaib Moti

Inventor： Tajinder Manku ,  Zohaib Moti

IPC: H04B7/005

CPC classification number: H04B1/525

Abstract: A radio transceiver including a transmitter and a receiver. A filter coupled to an output of the transmitter, the filter has one or more inductors and one or more capacitors, where the filter is tuned by varying one or more capacitance values of the one or more capacitors in the filter to tune the filter. The one or more capacitors are Barium Strontium Titanate (BST) ceramic integrated capacitors that are each tuned by application of a bias voltage thereto. A filter tuner circuit is configured to apply the bias voltage to the one or more capacitors, where the bias voltage is initially established as a stored initial value, and where the bias voltage is refined by a proportional-integral-derivative (PID) controller configured to optimize a power within the transceiver. This abstract is not to be considered limiting since various implementations may incorporate more, fewer or different elements.

公开(公告)号：US20130300619A1

公开(公告)日：2013-11-14

申请号：US13470472

申请日：2012-05-14

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: H01Q9/00 ,  H01Q1/50

CPC classification number: G01S13/756 ,  G06K19/0723 ,  G06K19/0726 ,  G06K19/07786

Abstract: An antenna apparatus for backscattering an incoming radio frequency (RF) signal includes an antenna for backscattering the incoming RF signal in accordance with a reflection coefficient characteristic of the antenna. A variable impedance circuit includes an output electrically connected to the antenna. A band-pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit, such that the reflection coefficient of the antenna is adjusted based on the digitally controlled output of the variable impedance circuit. In an RFID network, the apparatus and method reduces the effect of DC offset in the reader device and the effects of the reader device's phase noise, while allowing for complex modulations.

Abstract translation: 用于向后向散射输入射频（RF）信号的天线装置包括用于根据天线的反射系数特性来反向散射输入RF信号的天线。 可变阻抗电路包括电连接到天线的输出。 带通ΔΣ调制器耦合到可变阻抗电路，并且数字地控制可变阻抗电路的输出，使得基于可变阻抗电路的数字控制输出来调整天线的反射系数。 在RFID网络中，该装置和方法减少了读取器装置中DC偏移的影响以及读取器装置的相位噪声的影响，同时允许复杂的调制。

公开(公告)号：US20120022968A1

公开(公告)日：2012-01-26

申请号：US12902828

申请日：2010-10-12

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: H04W12/08 ,  G06F17/30

CPC classification number: H04W12/06 ,  G06Q30/0613 ,  H04W48/20

Abstract: A wireless communication device is configured to be able to communicate via both a first access point and a second access point for using the first access point to obtain validation credentials in order to permit use of the second access point to access a network. The wireless communication device comprises a processor; and a non-transitory computer readable medium having stored thereon computer executable instructions. The instructions are operable to: initiate communication with the second access point in order to access a network; obtain an access point identifier from the second access point, the access point identifier for identifying the second access point; transmit the access point identifier to a validation server via the first access point; receive validation credentials from the validation server via the first access point; and use the validation credentials to validate the wireless communication device with the second access point to obtain access to the network.

Abstract translation: 无线通信设备被配置为能够经由第一接入点和第二接入点经由第二接入点进行通信，以便使用第一接入点来获得有效凭证，以允许使用第二接入点来接入网络。 无线通信设备包括处理器; 以及其上存储有计算机可执行指令的非暂时性计算机可读介质。 所述指令可操作以：发起与所述第二接入点的通信以便接入网络; 从第二接入点获取接入点标识符，用于识别第二接入点的接入点标识符; 经由第一接入点将接入点标识符发送到验证服务器; 通过第一接入点从验证服务器接收验证凭证; 并使用验证凭证来验证具有第二接入点的无线通信设备以获得对网络的访问。

公开(公告)号：US07715814B2

公开(公告)日：2010-05-11

申请号：US11569031

申请日：2005-05-13

Applicant: Tajinder Manku ,  Masoud Kahrizi

Inventor： Tajinder Manku ,  Masoud Kahrizi

IPC: H04B1/10 ,  H04B1/26

CPC classification number: H04B1/30 ,  H03D7/00 ,  H04B15/06 ,  H04B2215/065

Abstract: A method and system for dynamically shifting spurious tones away from the desired frequency in a virtual local oscillator receiver, such that any undesired signal residing at such spurious tones are effectively delineated from the desired signal and removed from the RF input signal. The system detects the presence of potential undesired blocker signals in the RF input signal, and initiates an iterative power comparison and mixer signal adjustment loop. As the virtual local oscillator uses two mixer signals, the frequency of one of the mixer signals is adjusted during the loop until the power of the down-converted signal is minimized to a predetermined level. Minimized power in the down-converted signal is indicative of the absence of the blocker signal, since the presence of a relatively high power signal is indicative of a blocker signal overlapping with a desired signal.

Abstract translation: 一种用于在虚拟本地振荡器接收机中动态地将杂散音调从期望频率移位的方法和系统，使得驻留在这种寄生音调处的任何不需要的信号被有效地从期望的信号中描绘出并从RF输入信号中去除。 该系统检测RF输入信号中存在潜在的不希望的阻塞信号，并启动迭代功率比较和混频信号调节环路。 由于虚拟本地振荡器使用两个混频器信号，所以在环路中调整混频信号之一的频率，直到下变频信号的功率被最小化到预定的电平。 下变频信号中的最小化功率表示不存在阻塞信号，因为相对高功率信号的存在表示阻塞信号与期望信号重叠。