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. 发明授权

US08565703B2 System and method for handling strong signals and blockers in the RF front end 有权
标题翻译： RF前端处理强信号和阻塞的系统和方法
公开(公告)号：US08565703B2
公开(公告)日：2013-10-22
申请号：US13609094
申请日：2012-09-10
申请人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
发明人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
IPC分类号： H04B17/00 , H04B1/06 , H04B7/00 , H04B1/18
CPC分类号： H03G3/3052 , H04B1/109
摘要： An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals.
摘要翻译：通过将信号传送通过多个放大路径中的一个，RF射频信号可以在RF接收器的RF前端中放大。在每个路径上，增益可由RF自动增益控制（AGC）电路控制。每个放大路径可被设计为处理指定功率范围内的输入信号，并优化接收机性能特征，例如该功率范围内的噪声系数（NF）和奇次谐波线性度。可以在接收机的不同位置测量信号功率，根据可执行逻辑代码，旁路开关可用于基于功率测量将射频信号传送到多个路径之一。可以应用输入信号功率滞后来稳定系统。此外，可以采用信号功率平均和开关延迟机制来稳定系统以实现快速波动的信号。

2. 发明授权

US08265580B2 System and method for handling strong signals and blockers in the RF front end 有权
标题翻译： RF前端处理强信号和阻塞的系统和方法
公开(公告)号：US08265580B2
公开(公告)日：2012-09-11
申请号：US12620528
申请日：2009-11-17
申请人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
发明人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
IPC分类号： H04B17/00 , H04B1/06 , H04B7/00
CPC分类号： H03G3/3052 , H04B1/109
摘要： An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals.
摘要翻译：通过将信号传送通过多个放大路径中的一个，RF射频信号可以在RF接收器的RF前端中放大。在每个路径上，增益可由RF自动增益控制（AGC）电路控制。每个放大路径可被设计为处理指定功率范围内的输入信号，并优化接收机性能特征，例如该功率范围内的噪声系数（NF）和奇次谐波线性度。可以在接收机的不同位置测量信号功率，根据可执行逻辑代码，旁路开关可用于基于功率测量将射频信号传送到多个路径之一。可以应用输入信号功率滞后来稳定系统。此外，可以采用信号功率平均和开关延迟机制来稳定系统以实现快速波动的信号。

3. 发明申请

US20130005289A1 SYSTEM AND METHOD FOR HANDLING STRONG SIGNALS AND BLOCKERS IN THE RF FRONT END 有权
标题翻译：在RF前端处理强信号和阻塞器的系统和方法
公开(公告)号：US20130005289A1
公开(公告)日：2013-01-03
申请号：US13609094
申请日：2012-09-10
申请人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
发明人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
IPC分类号： H04W88/02 , H04B1/16
CPC分类号： H03G3/3052 , H04B1/109
摘要： An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals.
摘要翻译：通过将信号传送通过多个放大路径中的一个，RF射频信号可以在RF接收器的RF前端中放大。在每个路径上，增益可由RF自动增益控制（AGC）电路控制。每个放大路径可被设计为处理指定功率范围内的输入信号，并优化接收机性能特征，例如该功率范围内的噪声系数（NF）和奇次谐波线性度。可以在接收机的不同位置测量信号功率，根据可执行逻辑代码，旁路开关可用于基于功率测量将射频信号传送到多个路径之一。可以应用输入信号功率滞后来稳定系统。此外，可以采用信号功率平均和开关延迟机制来稳定系统以实现快速波动的信号。

4. 发明授权

US09059773B2 Radio frequency tuner 有权
标题翻译：射频调谐器
公开(公告)号：US09059773B2
公开(公告)日：2015-06-16
申请号：US12711218
申请日：2010-02-23
申请人： Vahid Mesgarpour Toosi , Mohammad Bagher Vahidfar , Saeid Mehrmanesh
发明人： Vahid Mesgarpour Toosi , Mohammad Bagher Vahidfar , Saeid Mehrmanesh
IPC分类号： H04B1/06 , H04B1/16 , H04B1/10
CPC分类号： H04B1/1027 , H03F3/193 , H03F3/45179 , H03F3/45197 , H03F3/505 , H03F2200/451 , H03F2203/5033 , H04B1/1638 , H04B17/21
摘要： A RF tuner is described for handling RF signals in a broad frequency range and a broad power range while maintaining high linearity and tolerating high power blockers. A continuous feedback loop comprising a substantially linear LNA and a radio frequency RSSI can adjust the power of the RF signal on the RF side. On the IF side, a continuous feedback loop comprising a substantially linear, variable gain transconductor and a RSSI can adjust the power of the IF signal.
摘要翻译：描述了RF调谐器用于在宽的频率范围和宽的功率范围内处理RF信号，同时保持高线性度并且容许高功率阻抗。包括基本线性LNA和射频RSSI的连续反馈回路可以调节RF侧的RF信号的功率。在IF侧，包括基本线性的可变增益跨导体和RSSI的连续反馈回路可以调节IF信号的功率。

5. 发明申请

US20110117868A1 SYSTEM AND METHOD FOR HANDLING STRONG SIGNALS AND BLOCKERS IN THE RF FRONT END 有权
标题翻译：在RF前端处理强信号和阻塞器的系统和方法
公开(公告)号：US20110117868A1
公开(公告)日：2011-05-19
申请号：US12620528
申请日：2009-11-17
申请人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
发明人： Mohammad Bagher Vahidfar , Vahid Mesgarpour Toosi , Saeid Mehrmanesh
IPC分类号： H04B17/00 , H04B1/06
CPC分类号： H03G3/3052 , H04B1/109
摘要： An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals.
摘要翻译：通过将信号传送通过多个放大路径中的一个，RF射频信号可以在RF接收器的RF前端中放大。在每个路径上，增益可由RF自动增益控制（AGC）电路控制。每个放大路径可被设计为处理指定功率范围内的输入信号，并优化接收机性能特征，例如该功率范围内的噪声系数（NF）和奇次谐波线性度。可以在接收机的不同位置测量信号功率，根据可执行逻辑代码，旁路开关可用于基于功率测量将射频信号传送到多个路径之一。可以应用输入信号功率滞后来稳定系统。此外，可以采用信号功率平均和开关延迟机制来稳定系统以实现快速波动的信号。

6. 发明申请

US20110086603A1 Radio Frequency Tuner 有权
标题翻译：射频调谐器
公开(公告)号：US20110086603A1
公开(公告)日：2011-04-14
申请号：US12711218
申请日：2010-02-23
申请人： Vahid Mesgarpour Toosi , Mohammad Bagher Vahidfar , Saeid Mehrmanesh
发明人： Vahid Mesgarpour Toosi , Mohammad Bagher Vahidfar , Saeid Mehrmanesh
IPC分类号： H04B1/18
CPC分类号： H04B1/1027 , H03F3/193 , H03F3/45179 , H03F3/45197 , H03F3/505 , H03F2200/451 , H03F2203/5033 , H04B1/1638 , H04B17/21
摘要： A RF tuner is described for handling RF signals in a broad frequency range and a broad power range while maintaining high linearity and tolerating high power blockers. A continuous feedback loop comprising a substantially linear LNA and a radio frequency RSSI can adjust the power of the RF signal on the RF side. On the IF side, a continuous feedback loop comprising a substantially linear, variable gain transconductor and a RSSI can adjust the power of the IF signal.
摘要翻译：描述了RF调谐器用于在宽的频率范围和宽的功率范围内处理RF信号，同时保持高线性度并且容许高功率阻抗。包括基本线性LNA和射频RSSI的连续反馈回路可以调节RF侧的RF信号的功率。在IF侧，包括基本线性的可变增益跨导体和RSSI的连续反馈回路可以调节IF信号的功率。

7. 发明授权

US08576008B2 Radio frequency signal gain control 有权
公开(公告)号：US08576008B2
公开(公告)日：2013-11-05
申请号：US13293504
申请日：2011-11-10
申请人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
IPC分类号： H03G3/30
CPC分类号： H03G3/3036 , H03G1/007 , H03G3/3052 , H03G3/3063
摘要： An RF receiver is described comprising a common gate common source LNA with a variable resistor in the source of the common gate transistor, a variable resistor in the source of the common source transistor, and a variable resistor in the RF input. A Smart Gain Control varies the resistance in the resistors to produce linear amplification in the LNA while maintaining input matching. Further, a broad dynamic range RSSI is described that implements a feedback control loop to maintain signal power within a sensitivity range of the power detector in the RSSI.

8. 发明授权

US08503576B2 Mirror signal IQ-imbalance correction 有权
公开(公告)号：US08503576B2
公开(公告)日：2013-08-06
申请号：US13093145
申请日：2011-04-25
申请人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi , Mahdi Khoshgard
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi , Mahdi Khoshgard
IPC分类号： H03D3/22
CPC分类号： H04B17/21 , H04B17/0085 , H04B17/20 , H04B17/327 , H04L1/20 , H04L43/028
摘要： A system and method are provided for calibrating the IQ-imbalance in a low-IF receiver. A Test Signal can be generated in a mirror frequency and conveyed to the receiver. The power of the signal produced in the receiver from the conveyed Test Signal can be measured. In the absence of an IQ-imbalance, the Test Signal can be completely eliminated in the receiver and the corresponding measured power of the produced signal can be minimized. Accordingly, a two dimensional algorithm is described for calibrating a receiver and correcting the IQ-imbalance by adjusting the phase and gain difference between the I and Q channels in the receiver based on the measured power of the signal produced in the receiver.

9. 发明申请

US20110230156A1 Dynamic Gain Assignment in Analog Baseband Circuits 有权
标题翻译：模拟基带电路中的动态增益分配
公开(公告)号：US20110230156A1
公开(公告)日：2011-09-22
申请号：US12728148
申请日：2010-03-19
申请人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
IPC分类号： H04B1/06
CPC分类号： H04B1/16 , H03F3/19 , H03F2200/135 , H03F2200/144 , H03F2200/451 , H03G3/3036 , H03G3/3068 , H03H11/1213 , H03H11/1291 , H03K5/00 , H04B1/10 , H04L25/08
摘要： A system and method is provided for filtering and amplifying a signal where amplification can be distributed between stages of a filter and gain can be assigned throughout the filter to optimize system performance. Such a system can be implemented in the baseband section of RF receivers. VGAs can be implemented between filter stages, such as biquads, or VGAs can be incorporated in filter stages. Substantially linear VGAs comprising a parallel resistor array can be incorporated in the circuitry of the filter stages to reduce distortion. Gain can be assigned dynamically in the amplification stages to improve noise and/or linearity performance. For example, gain assignments can be implemented so that high power undesired signal components are filtered out before amplification to prevent component saturation, and low power signals are amplified before they are filtered to improve noise performance.
摘要翻译：提供了一种用于过滤和放大信号的系统和方法，其中可以在滤波器的级之间分布放大，并且可以在整个滤波器上分配增益以优化系统性能。这样的系统可以在RF接收机的基带部分中实现。 VGA可以在滤波器级之间实现，例如二进制二进制，或者VGA可以并入滤波器级。包括并联电阻器阵列的基本线性VGA可以并入滤波器级的电路中以减少失真。增益可以在放大级别动态分配，以提高噪声和/或线性性能。例如，可以实现增益分配，使得在放大之前将高功率不需要的信号分量滤除以防止元件饱和，并且低功率信号在滤波之前被放大以提高噪声性能。

10. 发明申请

US20130120068A1 RADIO FREQUENCY SIGNAL GAIN CONTROL 有权
标题翻译：无线电频率信号增益控制
公开(公告)号：US20130120068A1
公开(公告)日：2013-05-16
申请号：US13293504
申请日：2011-11-10
申请人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
IPC分类号： H03G3/30
CPC分类号： H03G3/3036 , H03G1/007 , H03G3/3052 , H03G3/3063
摘要： An RE receiver is described comprising a common gate common source LNA with a variable resistor in the source of the common gate transistor, a variable resistor in the source of the common source transistor, and a variable resistor in the RE input. A Smart Gain Control varies the resistance in the resistors to produce linear amplification in the LNA while maintaining input matching. Further, a broad dynamic range RSSI is described that implements a feedback control loop to maintain signal power within a sensitivity range of the power detector in the RSSI.
摘要翻译：描述了一种RE接收器，其包括在公共栅极晶体管的源极中具有可变电阻器的公共栅极公共源LNA，在公共源晶体管的源极中的可变电阻器以及RE输入端中的可变电阻器。智能增益控制可以改变电阻器中的电阻，从而在保持输入匹配的同时在LNA中产生线性放大。此外，描述了实现反馈控制回路以将信号功率维持在RSSI中的功率检测器的灵敏度范围内的宽动态范围RSSI。

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