公开(公告)号：US09882602B2

公开(公告)日：2018-01-30

申请号：US13172653

申请日：2011-06-29

Applicant: Prasad Srinivasa Siva Gudem ,  Liang Zhao ,  I-Hsiang Lin ,  Zhijie Xiong ,  Bhushan Shanti Asuri ,  Aristotele Hadjichristos

Inventor： Prasad Srinivasa Siva Gudem ,  Liang Zhao ,  I-Hsiang Lin ,  Zhijie Xiong ,  Bhushan Shanti Asuri ,  Aristotele Hadjichristos

IPC: H04B1/3805 ,  H04B1/525

CPC classification number: H04B1/525 ,  H04B1/3805

Abstract: A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.

公开(公告)号：US08405469B2

公开(公告)日：2013-03-26

申请号：US13312328

申请日：2011-12-06

Applicant: Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

Inventor： Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

IPC: H01P5/12 ,  H01P5/22

CPC classification number: H01P5/227

Abstract: High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices.

Abstract translation: 利用人造复合右/左传输线（CRLH-TL）描述高频耦合器和耦合技术。 描述了三种具体形式的耦合器; （1）耦合线反向耦合器被描述为具有任意的紧/松耦合和宽带宽; （2）以增加的带宽和减小的尺寸描述紧凑的增强带宽混合环耦合器; 和（3）双频分支线耦合器，不限于频带之间的谐波关系。 这些变化优选地在微带制造过程中实现，并且可以使用集总元件部件。 耦合器和耦合技术旨在增加效用，同时降低高频耦合器的尺寸，并且适用于集成在集成器件内的单独的耦合器或耦合器。

公开(公告)号：US20130003783A1

公开(公告)日：2013-01-03

申请号：US13172653

申请日：2011-06-29

Applicant: Prasad Srinivasa Siva Gudem ,  Liang Zhao ,  I-Hsiang Lin ,  Zhijie Xiong ,  Bhushan Shanti Asuri ,  Aristotele Hadjichristos

Inventor： Prasad Srinivasa Siva Gudem ,  Liang Zhao ,  I-Hsiang Lin ,  Zhijie Xiong ,  Bhushan Shanti Asuri ,  Aristotele Hadjichristos

IPC: H04B1/707

CPC classification number: H04B1/525 ,  H04B1/3805

Abstract: A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.

Abstract translation: 公开了一种具有滤波器旁路模式以提高灵敏度的全球导航卫星系统接收机。 在一方面，提供一种装置，其包括耦合到接收器的非旁路信号路径，非旁路信号路径包括滤波器。 该装置还包括耦合到接收器的旁路信号路径，配置为旁路滤波器的旁路信号路径以及在由不相关的本地发射机发送的信号被发送的时间间隔期间将天线耦合到非旁路信号路径的开关 信号功率超过所选阈值，并且在其它时间间隔期间将天线耦合到旁路信号路径。

公开(公告)号：US08254849B2

公开(公告)日：2012-08-28

申请号：US12417512

申请日：2009-04-02

Applicant: Tzu-wang Pan ,  Yi Zeng ,  I-Hsiang Lin ,  Pushp K. Trikha ,  Jeremy D. Dunworth ,  Rahul Apte

Inventor： Tzu-wang Pan ,  Yi Zeng ,  I-Hsiang Lin ,  Pushp K. Trikha ,  Jeremy D. Dunworth ,  Rahul Apte

IPC: H04B1/06

CPC classification number: H04B1/3805 ,  H04B15/06

Abstract: An FM radio with a wide frequency range operates in a cell phone without interfering with the VCO of the RF transceiver. The FM transceiver generates a VCO signal whose frequency varies by less than ±7% from the midpoint of a narrow first range. A synthesizer signal is generated by dividing the VCO frequency by a first divisor such that the synthesizer frequency varies over a lower frequency second range. The VCO frequency is also divided by a second divisor such that the synthesizer frequency varies over a third range. The upper limit of the second range falls at the lower limit of the third range. The lower limit of the second range is 85.5 MHz and the upper limit of the third range is 108.0 MHz. By also using a third divisor, a synthesizer signal with a range of 76-108 MHz is generated from the narrow first frequency range.

Abstract translation: 具有宽频率范围的FM收音机在手机中工作，而不会干扰RF收发器的VCO。 FM收发器产生一个VCO信号，其频率从窄的第一范围的中点变化小于±7％。 通过将VCO频率除以第一因子来产生合成器信号，使得合成器频率在较低频率的第二范围内变化。 VCO频率也被第二除数除以使得合成器频率在第三范围内变化。 第二范围的上限落在第三范围的下限。 第二范围的下限为85.5MHz，第三范围的上限为108.0MHz。 通过使用第三除数，从窄的第一频率范围产生具有76-108MHz范围的合成器信号。

公开(公告)号：US20120139659A1

公开(公告)日：2012-06-07

申请号：US13312328

申请日：2011-12-06

Applicant: Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

Inventor： Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

IPC: H01P5/16

CPC classification number: H01P5/227

Abstract: High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices.

Abstract translation: 利用人造复合右/左传输线（CRLH-TL）描述高频耦合器和耦合技术。 描述了三种具体形式的耦合器; （1）耦合线反向耦合器被描述为具有任意的紧/松耦合和宽带宽; （2）以增加的带宽和减小的尺寸描述紧凑的增强带宽混合环耦合器; 和（3）双频分支线耦合器，不限于频带之间的谐波关系。 这些变化优选地在微带制造过程中实现，并且可以使用集总元件部件。 耦合器和耦合技术旨在增加效用，同时降低高频耦合器的尺寸，并且适用于集成在集成器件内的单独的耦合器或耦合器。

公开(公告)号：US08169270B2

公开(公告)日：2012-05-01

申请号：US12437462

申请日：2009-05-07

Applicant: Yi Zeng ,  Tzu-wang Pan ,  I-Hsiang Lin

Inventor： Yi Zeng ,  Tzu-wang Pan ,  I-Hsiang Lin

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293

Abstract: A VCO (for example, in an FM receiver) includes an LC resonant tank. The LC resonant tank includes a coarse tuning capacitor bank and a fine tuning capacitor bank. The coarse tuning capacitor bank contains a plurality of digitally controlled coarse tuning capacitor elements, each providing a first capacitance value when active. The fine tuning capacitor bank contains a plurality of digitally controlled fine tuning capacitor elements, each providing a second capacitance value when active. To address the practical problem of capacitor mismatch, capacitance overlap throughout the VCO tuning range is created by selecting the first and second capacitance values such that the capacitance value of the fine capacitor bank is greater than the first capacitance value when all of the digitally controlled fine tuning capacitor elements of the fine capacitor bank are active.

Abstract translation: VCO（例如，在FM接收机中）包括LC谐振回路。 LC谐振槽包括一个粗调谐电容器组和一个微调电容器组。 粗调谐电容器组包含多个数字控制的粗调电容器元件，每个主调制电容器元件在有源时提供第一电容值。 微调电容器组包含多个数字控制的微调电容器元件，每个微调电容器元件在有源时提供第二电容值。 为了解决电容器失配的实际问题，通过选择第一和第二电容值来创建整个VCO调谐范围内的电容重叠，使得当全部数字控制的精细时，精细电容器组的电容值大于第一电容值 精细电容器组的调谐电容器元件是有效的。

公开(公告)号：US20100085090A1

公开(公告)日：2010-04-08

申请号：US12404200

申请日：2009-03-13

Applicant: I-Hsiang Lin ,  Roger Brockenbrough

Inventor： I-Hsiang Lin ,  Roger Brockenbrough

IPC: H03L7/06

CPC classification number: H03L7/07 ,  H03L7/081 ,  H03L7/0995 ,  H03L7/197 ,  H03L7/22 ,  H03L7/23 ,  H04B1/0039

Abstract: A clock clean-up phase-locked loop (PLL) that may reduce spurs and improve performance of a receiver is described. In one exemplary design, an integrated circuit includes a PLL and an analog-to-digital converter (ADC). The PLL receives a first clock signal generated with a fractional divider ratio and having spurs due to abrupt frequency jumps. The first clock signal may be generated by a fractional-N frequency synthesizer external to the integrated circuit. The PLL generates a second clock signal with an integer divider ratio and having reduced spurs. The ADC digitizes an analog baseband signal based on the second clock signal and provides digital samples. The integrated circuit may further include a low noise amplifier (LNA), which may observe less spurs coupled via the substrate of the integrated circuit due to the use of the PLL to clean up the first clock signal.

Abstract translation: 描述了可以减少杂散并提高接收机性能的时钟清理锁相环（PLL）。 在一个示例性设计中，集成电路包括PLL和模数转换器（ADC）。 PLL接收以分数除数比产生的第一个时钟信号，并且由于突然的跳频而产生杂散。 第一时钟信号可以由集成电路外部的分数N频率合成器产生。 PLL产生具有整数分频比的第二个时钟信号，并具有减少的杂散。 ADC根据第二个时钟信号数字化模拟基带信号，并提供数字采样。 集成电路还可以包括低噪声放大器（LNA），由于使用PLL来清理第一时钟信号，可以观察到较小的经由集成电路的衬底耦合的杂散。

公开(公告)号：US07667555B2

公开(公告)日：2010-02-23

申请号：US12122371

申请日：2008-05-16

Applicant: Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

Inventor： Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

IPC: H01P5/12 ,  H01P5/22

CPC classification number: H01P5/227

Abstract: High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices.

Abstract translation: 利用人造复合右/左传输线（CRLH-TL）描述高频耦合器和耦合技术。 描述了三种具体形式的耦合器; （1）耦合线反向耦合器被描述为具有任意的紧/松耦合和宽带宽; （2）以增加的带宽和减小的尺寸描述紧凑的增强带宽混合环耦合器; 和（3）双频分支线耦合器，不限于频带之间的谐波关系。 这些变化优选地在微带制造工艺中实现，并且可以使用集总元件部件。 耦合器和耦合技术旨在增加效用，同时降低高频耦合器的尺寸，并且适用于集成在集成器件内的单独的耦合器或耦合器。

公开(公告)号：US20090079513A1

公开(公告)日：2009-03-26

申请号：US12122371

申请日：2008-05-16

Applicant: Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

Inventor： Tatsuo Itoh ,  Christophe Caloz ,  I-Hsiang Lin ,  Hiroshi Okabe

IPC: H01P5/18

CPC classification number: H01P5/227

Abstract: High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices.

Abstract translation: 利用人造复合右/左传输线（CRLH-TL）描述高频耦合器和耦合技术。 描述了三种具体形式的耦合器; （1）耦合线反向耦合器被描述为具有任意的紧/松耦合和宽带宽; （2）以增加的带宽和减小的尺寸描述紧凑的增强带宽混合环耦合器; 和（3）双频分支线耦合器，不限于频带之间的谐波关系。 这些变化优选地在微带制造过程中实现，并且可以使用集总元件部件。 耦合器和耦合技术旨在增加效用，同时降低高频耦合器的尺寸，并且适用于集成在集成器件内的单独的耦合器或耦合器。

公开(公告)号：US08688045B2

公开(公告)日：2014-04-01

申请号：US12274167

申请日：2008-11-19

Applicant: I-Hsiang Lin ,  Tzu-wang Pan ,  Yi Zeng

Inventor： I-Hsiang Lin ,  Tzu-wang Pan ,  Yi Zeng

IPC: H04B1/00

CPC classification number: H04B1/525

Abstract: Exemplary embodiments include a frequency modulation (FM) transmitter and a non-FM receiver, which may be implemented on the same IC chip. The FM transmitter may include a digital FM modulator, a lowpass filter, an amplifier, and an LC tank circuit. The digital FM modulator may receive a digital input signal, perform FM modulation with the digital input signal, and provide a digital FM signal. The lowpass filter may filter the digital FM signal and provide a filtered FM signal. The amplifier may amplify the filtered FM signal and provide an output FM signal. The LC tank circuit may filter the output FM signal. The digital FM modulator may perform FM modulation by changing a variable divider ratio of a multi-modulus divider within a PLL. A delta-sigma modulator may receive the digital input signal and generate a modulator output signal used to obtain the variable divider ratio.

Abstract translation: 示例性实施例包括可以在同一IC芯片上实现的调频（FM）发射机和非FM接收机。 FM发射机可以包括数字FM调制器，低通滤波器，放大器和LC电路。 数字FM调制器可以接收数字输入信号，使用数字输入信号执行FM调制，并提供数字FM信号。 低通滤波器可以对数字FM信号进行滤波并提供滤波后的FM信号。 放大器可以放大经滤波的FM信号并提供输出FM信号。 LC振荡电路可以对输出的FM信号进行滤波。 数字FM调制器可以通过改变PLL内的多模式分频器的可变分频比来执行FM调制。 Δ-Σ调制器可以接收数字输入信号并产生用于获得可变分频比的调制器输出信号。