专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110086606A1 ADAPTIVE RECEIVERS 有权
标题翻译：自适应接收者
公开(公告)号：US20110086606A1
公开(公告)日：2011-04-14
申请号：US12579306
申请日：2009-10-14
申请人： Peng-Sen CHEN , Hsiang-Te HO
发明人： Peng-Sen CHEN , Hsiang-Te HO
IPC分类号： H04B1/26
CPC分类号： H04B1/30 , H03L7/099 , H03L7/1976
摘要： An adaptive receiver for receiving a radio frequency (RF) signal and converting the RF signal at an RF frequency FRF toward a low intermediate frequency FIF is disclosed. The adaptive receiver comprises a pair of band pass filters with a nominal center frequency Fc equal to FIF, a look-up table (LUT) configured to estimate a frequency offset Δf, representing the center frequency of the band pass filter due to an operating temperature change and/or process variation, a micro controller configured to estimate the operating center frequency of the band pass filter (=FIF+Δf with the frequency offset included) and use this new center frequency as the adaptive intermediate frequency FIF,AD, and a local oscillator generates oscillating signals at a frequency FLO equal to FRF minus FIF,AD. A temperature sensing device may also be included in this adaptive receiver.
摘要翻译：公开了一种用于接收射频（RF）信号并且以RF频率FRF将RF信号转换成低中频FIF的自适应接收机。自适应接收机包括具有等于FIF的标称中心频率Fc的一对带通滤波器，配置为估计表示由于频带偏移的带通滤波器的中心频率的频率偏移＆Dgr; f的查找表（LUT）工作温度变化和/或过程变化的微控制器，微控制器，被配置为估计带通滤波器的操作中心频率（=包括频率偏移的FIF +＆Dgr; f），并使用该新的中心频率作为自适应中频FIF， AD和本地振荡器以等于FRF减去FIF，AD的频率FLO产生振荡信号。温度感测装置也可以包括在该自适应接收机中。

2. 发明授权

US07668895B2 Galois field computation 有权
标题翻译：伽罗瓦域计算
公开(公告)号：US07668895B2
公开(公告)日：2010-02-23
申请号：US11000013
申请日：2004-12-01
申请人： Huashih Lin , Lloyd Welch , Hsiao-Feng Lu
发明人： Huashih Lin , Lloyd Welch , Hsiao-Feng Lu
IPC分类号： G06F7/72
CPC分类号： G06F7/726 , G06F2207/7209
摘要： A method and device for computing the multiplicative inverse of element x in Galois field GF(p2m) is proposed. In particular, when p is a prime number and m is an integer, the inverse may be constructed based on the observation that xpm+1 is en element in sub-field GF(pm) and the inverse of xpm+1 can be carried out in the sub-field. The inverse of X may be obtained by multiplying x−1=(xpm+1)−1 by xpm.
摘要翻译：提出了一种用于计算伽罗瓦域GF（p2m）中元素x的乘法逆的方法和装置。特别地，当p是素数并且m是整数时，可以基于子场GF（pm）中的xpm + 1是en元素并且可以执行xpm + 1的倒数的观察来构造反向在子领域。可以通过将x-1 =（xpm + 1）-1乘以xpm来获得X的倒数。

3. 发明授权

US07444167B2 Dual-band wireless LAN RF transceiver 有权
标题翻译：双频无线局域网射频收发器
公开(公告)号：US07444167B2
公开(公告)日：2008-10-28
申请号：US11149230
申请日：2005-06-10
申请人： Sheng-Fuh Chang , Wen-Lin Chen , Cheng-Hua Tsai , Chin-Hung Chien , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
发明人： Sheng-Fuh Chang , Wen-Lin Chen , Cheng-Hua Tsai , Chin-Hung Chien , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
IPC分类号： H04Q7/32
CPC分类号： H04B1/0071 , H04B1/0082
摘要： The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.
摘要翻译：本发明公开了一种双频RF收发器。收发器包括用作双频带收发器的RF前端并用于接收和发送第一RF信号和第二RF信号的第一模块; 电连接到第一模块的第二模块，用作双频RF收发器的IF IQ调制器/解调器; 电连接到第一和第二模块的第三模块，用作双频带RF收发器的三频带锁相频率合成器，用于向第一和第二模块提供第一本地振荡信号和第二本地振荡信号模块和第三本地振荡信号发送到第二模块。根据本发明的双频RF收发器通过单个双频RF模块实现IEEE802.11a / b / g的双频三模操作，因此电路尺寸，功耗，组件数，并且成本可以大大降低。

4. 发明授权

US07193477B2 Concurrent triple-band gain amplifier for multi-standard coexist communications 有权
标题翻译：并行三频增益放大器，用于多标准共存通信
公开(公告)号：US07193477B2
公开(公告)日：2007-03-20
申请号：US11147458
申请日：2005-06-08
申请人： Sheng-Fuh Chang , Wen-Lin Chen , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
发明人： Sheng-Fuh Chang , Wen-Lin Chen , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
IPC分类号： H03F3/04
CPC分类号： H03F3/191 , H03F2200/111 , H03F2200/294 , H03F2200/372
摘要： The present invention discloses a gain amplifier, capable of concurrently operating at three different frequency bands. The gain amplifier comprises an amplification stage for amplifying a signal applied to an input of the amplifier and a triple-band resonance load connected between a DC bias voltage and a DC bias input of the amplification stage. The triple-band resonance load uses a set of reactive elements to provide match in a first frequency band, a second frequency band and in a third frequency band, such as at 2.4 GHz, 5.8 GHz and 9.0 GHz. According to the gain amplifier of the present invention, it can effectively provide triple-band signal amplification and in-band interference suppression for various multi-standard coexist communication systems.
摘要翻译：本发明公开了一种增益放大器，能够同时在三个不同的频带工作。增益放大器包括用于放大施加到放大器的输入的信号的放大级和连接在放大级的DC偏置电压和DC偏置输入之间的三频带谐振负载。三频带谐振负载使用一组无功元件来提供第一频带，第二频带和第三频带（例如，2.4GHz，5.8GHz和9.0GHz）的匹配。根据本发明的增益放大器，可以有效地为各种多标准并存通信系统提供三频带信号放大和带内干扰抑制。

5. 发明授权

US07173401B1 Differential amplifier and low drop-out regulator with thereof 有权
标题翻译：差分放大器和低压差放大器
公开(公告)号：US07173401B1
公开(公告)日：2007-02-06
申请号：US11195263
申请日：2005-08-01
申请人： Chun-Sheng Huang
发明人： Chun-Sheng Huang
IPC分类号： G05F1/573
CPC分类号： G05F1/575
摘要： A differential amplifier having a positive input terminal, a negative input terminal, an output terminal, a bias terminal and a ground terminal is provided. The differential amplifier comprises a differential pair circuit and a current mirror circuit. Wherein, the differential pair circuit is coupled to the positive input terminal, the negative input terminal, the output terminal, and the bias terminal of the differential amplifier. The current mirror circuit receives a constant current from a current source, and mirrors the constant current to the differential pair circuit. The current mirror circuit further connects to the ground terminal of the differential amplifier, and the terminal of the current mirror circuit receiving the constant current is coupled to a first source/drain terminal of a first PMOS transistor. A second source/drain and a gate of the first PMOS transistor are connected to the bias terminal and the output terminal of the differential amplifier, respectively.
摘要翻译：提供具有正输入端，负输入端，输出端，偏置端和接地端的差分放大器。差分放大器包括差分对电路和电流镜电路。其中，差分对电路耦合到差分放大器的正输入端，负输入端，输出端和偏置端。电流镜电路从电流源接收恒定电流，并将恒定电流反映到差分对电路。电流镜电路还连接到差分放大器的接地端子，并且接收恒定电流的电流镜电路的端子耦合到第一PMOS晶体管的第一源极/漏极端子。第一PMOS晶体管的第二源极/漏极和栅极分别连接到差分放大器的偏置端子和输出端子。

6. 发明申请

US20060091979A1 Dual-band bandpass filter with stepped-impedance resonators 有权
标题翻译：具有阶梯式阻抗谐振器的双频带通滤波器
公开(公告)号：US20060091979A1
公开(公告)日：2006-05-04
申请号：US10978395
申请日：2004-11-02
申请人： Sheng-Fuh Chang , Shuen-Chien Chang , Jia-Liang Cheng , Shih-Chieh Chen , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
发明人： Sheng-Fuh Chang , Shuen-Chien Chang , Jia-Liang Cheng , Shih-Chieh Chen , Hung-Cheng Chen , Shu-Fen Tang , Albert Chen
IPC分类号： H01P1/203
CPC分类号： H01P1/20363 , H01P1/20372 , H01P1/20381
摘要： A dual-band bandpass filter with stepped-impedance resonators uses only one circuit to generate dual-band effect. It adopts the principle of stepped-impedance resonator, which contains a connecting section and two coupling sections. The impedance and electrical length of the connecting section and coupling sections conforms to a selected condition to generate two passbands at desired frequencies. A multi-layer broadside-coupled parallel lines structure may be applied to increase coupling-amount between the parallel lines so that the dual-band bandpass filters have broader bandwidth and less loss.
摘要翻译：带有阶梯型阻抗谐振器的双频带通滤波器仅使用一个电路来产生双频带效应。它采用阶梯阻抗谐振器的原理，其包含连接部分和两个耦合部分。连接部分和耦合部分的阻抗和电长度符合所选条件，以产生所需频率的两个通带。可以应用多层宽边耦合并行线结构来增加并联线之间的耦合量，使得双频带通滤波器具有更宽的带宽和更小的损耗。

7. 发明申请

US20130076410A1 POWER ON RESET SIGNAL GENERATING APPARATUS AND METHOD 有权
标题翻译：上电复位信号发生装置和方法
公开(公告)号：US20130076410A1
公开(公告)日：2013-03-28
申请号：US13244279
申请日：2011-09-24
申请人： Yi-Lung Chen
发明人： Yi-Lung Chen
IPC分类号： H03L7/00
CPC分类号： G06F1/24 , H03K17/223
摘要： A power on reset signal generating apparatus is provided. The power on reset signal generating apparatus includes a trigger capacitor, a reference current supplying circuit, and a current regulator. One end of the trigger capacitor is coupled to a ground voltage, and the other end of the trigger capacitor generates a power on reset signal. The reference current supplying circuit is coupled to a signal generating end. The current regulator is coupled to the signal generating end, and the signal generating end draws a splitting current to adjust the value of the current received by the trigger capacitor.
摘要翻译：提供了上电复位信号发生装置。上电复位信号发生装置包括触发电容器，参考电流供给电路和电流调节器。触发电容器的一端耦合到接地电压，触发电容的另一端产生上电复位信号。参考电流提供电路耦合到信号产生端。电流调节器耦合到信号产生端，并且信号产生端抽取分流电流以调整触发电容接收的电流的值。

8. 发明申请

US20110142173A1 RECEIVERS AND SYMBOL DECODERS THEREOF 有权
标题翻译：接收者和符号解码器
公开(公告)号：US20110142173A1
公开(公告)日：2011-06-16
申请号：US12637388
申请日：2009-12-14
申请人： Wei-Chung Peng , Jeng-Hong Chen , Pansop Kim
发明人： Wei-Chung Peng , Jeng-Hong Chen , Pansop Kim
IPC分类号： H03D3/00
CPC分类号： H04L27/10 , H04L27/227 , H04L2027/0067
摘要： A receiver capable of decoding a symbol based on information on a previous symbol, the symbol and a next symbol in a Gaussian frequency shift keying (GFSK) communication system is provided. The receiver includes a discriminator to generate a symbol for each bit in a bit sequence, a first lookup table (LUT) to store a number of bit patterns and mapping patterns, wherein each of the bit patterns is in the form of a set of consecutive bits in the bit sequence and corresponds to a respective one of the mapping patterns, and wherein each of the mapping patterns includes a set of entries and each of the entries results from an operation of attribute values at a sample time in the waveform of a symbol, a calculator to receive a set of consecutive symbols from the discriminator and calculate a distance value between the set of consecutive symbols and each of the mapping patterns, and a comparator to identify one of the mapping patterns with a minimum distance value by comparing among the distance values from the calculator.
摘要翻译：提供一种能够基于高斯频移键控（GFSK）通信系统中的先前符号，符号和下一个符号的信息来解码符号的接收器。接收机包括用于为比特序列中的每个比特生成符号的鉴别器，用于存储多个比特模式和映射模式的第一查找表（LUT），其中每个比特模式是一组连续的形式比特序列中的比特并且对应于相应的一个映射模式，并且其中每个映射模式包括一组条目，并且每个条目由来自符号波形中的采样时间的属性值的操作产生计算器，用于从鉴别器接收一组连续的符号，并计算连续符号集合与每个映射模式之间的距离值;以及比较器，用于通过比较各个映射模式之间的比较来识别具有最小距离值的映射模式之一计算器的距离值。

9. 发明授权

US07949327B2 Method and apparatus for reception of long range signals in bluetooth 有权
标题翻译：用于在蓝牙中接收远程信号的方法和装置
公开(公告)号：US07949327B2
公开(公告)日：2011-05-24
申请号：US11435948
申请日：2006-05-18
申请人： Albert Chen , Kuang-Ping Ma , Wen-Tso Huang
发明人： Albert Chen , Kuang-Ping Ma , Wen-Tso Huang
IPC分类号： H04M1/66
CPC分类号： H04W52/281 , H04L25/03159 , H04L2025/03522 , H04L2025/03624 , H04W84/18
摘要： The invention of a method and an apparatus for reception of long transmission range Bluetooth signals impaired by multipath are disclosed. The new reception method and apparatus proposed allows to increase the transmission range for data transmission in Bluetooth. The invention proposes the use of a new FDE adapted to SC transmission without a GI or CP. The proposed FDE very successfully mitigates ISI while being very implementation-friendly.
摘要翻译：公开了一种用于接收受多径损害的长传输范围蓝牙信号的方法和装置的发明。所提出的新的接收方法和装置允许增加蓝牙中数据传输的传输范围。本发明提出了在没有GI或CP的情况下适用于SC传输的新的FDE的使用。提出的FDE非常成功地减轻ISI，同时非常实用。

10. 发明授权

US07933361B2 Hybrid DC-offset reduction method and system for direct conversion receiver 有权
标题翻译：用于直接转换接收机的混合直流偏移降低方法和系统
公开(公告)号：US07933361B2
公开(公告)日：2011-04-26
申请号：US11399127
申请日：2006-04-05
申请人： Kuang-Hu Huang , Wei-Chung Peng , Chia-So Chuan
发明人： Kuang-Hu Huang , Wei-Chung Peng , Chia-So Chuan
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04B1/30 , H03D3/008 , H03G3/3068 , H04L25/061
摘要： A hybrid structure circuit for the cancellation of both Type-I and Type-II DC offsets. It comprises a static compensator in conjunction with a servo-loop feedback amplifier to suppress the undesired DC components present along the path of the base band after the direct conversion mixer. Two mixers are used to down convert a received RF signal directly to a base band signal with two components: in-phase and quadrature-phase. Both in-phase and quadrature-phase branches employ the same circuitry for DC offset cancellation. Miller effect is also utilized in the structure in order to implement the circuit on-chip.
摘要翻译：用于消除I型和II型DC偏移的混合结构电路。它包括与伺服环路反馈放大器结合的静态补偿器，以在直接转换混频器之后抑制沿基带路径存在的不期望的直流分量。两个混频器用于将接收到的RF信号直接转换为具有两个分量的基带信号：同相和正交相。同相和正交相分支都使用相同的电路进行直流偏移消除。为了实现片上电路，该结构还利用了米勒效应。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式