公开(公告)号：US20110028115A1

公开(公告)日：2011-02-03

申请号：US12461069

申请日：2009-07-30

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/123

摘要： A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF) to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer is used to frequency translate a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter characterized as the low Q filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer is used to frequency translate a communication signal using a second local oscillator signal, the second local oscillator signal being substantially similar in frequency of the first local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.

摘要翻译： 公开了一种方法和装置，以有效地频率转换滤波器，其特征在于对应于大约零赫兹的基带频率的低质量因子（Q）滤波器或者将中频（IF）调频到以频率为高Q滤波器的滤波器 大于基带频率或IF。 下变频混频器用于使用第一本地振荡器信号将通信信号频率转换为基带频率或IF，以提供经下变频的通信信号。 滤波器，其特征在于对应于基带频率的低Q滤波器或IF对下变频通信信号进行滤波以提供经滤波的通信信号。 使用上变频混频器使用第二本地振荡器信号对通信信号进行频率转换，第二本地振荡器信号在第一本机振荡器信号的频率上基本相似。 通过上变频混频器进行的频率转换实际上将滤波器特性从低Q滤波器转换为高于基带频率或IF的频率的高Q滤波器。

公开(公告)号：US08855593B2

公开(公告)日：2014-10-07

申请号：US13448980

申请日：2012-04-17

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/10

CPC分类号： H04B1/525 ,  H03F1/3241 ,  H04B1/0475 ,  H04B2001/0425

摘要： A circuit includes a local oscillator of a transmitter, the local oscillator to generate a transmitter local oscillator signal. A switch controlled by the transmitter local oscillator signal connects with a baseband impedance element to generate a notch frequency signal. The notch frequency signal is added to a transmitter leakage signal to attenuate the transmitter leakage signal prior to demodulation of a desired receiver signal by a receiver.

摘要翻译： 电路包括发射机的本地振荡器，本地振荡器产生发射机本地振荡器信号。 由发射机本地振荡器信号控制的开关与基带阻抗元件连接以产生陷波频率信号。 陷波频率信号被添加到发射机泄漏信号，以在由接收机解调期望的接收机信号之前衰减发射机泄漏信号。

公开(公告)号：US08422979B2

公开(公告)日：2013-04-16

申请号：US13050570

申请日：2011-03-17

申请人： David Murphy ,  Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： David Murphy ,  Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/16 ,  H04B1/30

摘要： Aspects of a method and system for a low-noise, highly-linear receiver front-end are provided. In this regard, a received signal may be processed via one or more transconductances, one or more transimpedance amplifiers (TIAs), and one or more mixers to generate a first baseband signal corresponding to a voltage at a node of the receiver, and a second baseband signal corresponding to a current at the node of the receiver. The first signal and the second signal may be processed to recover information from the received signal. The first signal may be generated via a first one or more signal paths of the receiver and the second signal may be generated via a second one or more signal paths of the receiver.

公开(公告)号：US08644786B2

公开(公告)日：2014-02-04

申请号：US13613624

申请日：2012-09-13

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/123

摘要： A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter, corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF), to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer frequency translates a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer frequency translates a communication signal using a second local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.

摘要翻译： 公开了一种方法和装置，用于将表征为低质量因子（Q）滤波器的滤波器频率转换成对应于近似零赫兹的基带频率或中频（IF）的滤波器，其特征在于高Q滤波器 在大于基带频率或IF的频率处。 下变频混频器使用第一本地振荡器信号将通信信号转换为基带频率或IF，以提供下变频的通信信号。 对应于基带频率的滤波器或IF对经下变频的通信信号进行滤波以提供经滤波的通信信号。 上变频混频器使用第二本地振荡器信号来转换通信信号。 通过上变频混频器进行的频率转换实际上将滤波器特性从低Q滤波器转换为高于基带频率或IF的频率的高Q滤波器。

公开(公告)号：US08565710B2

公开(公告)日：2013-10-22

申请号：US13076262

申请日：2011-03-30

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/40 ,  H04B1/10

CPC分类号： H03H7/40 ,  H03H19/008 ,  H04B2001/0491 ,  H04W88/02

摘要： A SAW-less transmitter includes an up-conversion mixing module, a frequency translated BPF (FTBPF), an output module, and a power amplifier driver. The up-conversion mixing module converts an outbound symbol stream into an up-converted signal. The FTBPF frequency translates a baseband filter response to an RF bandpass filter response and filter the up-converted signal in accordance with the RF bandpass filter response to produce a filtered up-converted signal. The output module conditions the filtered up-converted signal to produce a conditioned up-converted signal. The power amplifier driver amplifies the conditioned up-converted signal to produce an outbound RF signal.

摘要翻译： 无SAW发射机包括上变频混频模块，频率转换BPF（FTBPF），输出模块和功率放大器驱动器。 上变频混频模块将出站符号流转换为上变频信号。 FTBPF频率将基带滤波器响应转换为RF带通滤波器响应，并根据RF带通滤波器响应对上变频信号进行滤波，以产生滤波的上变频信号。 输出模块对滤波的上变频信号进行调节，以产生调节的上变频信号。 功率放大器驱动器放大经调节的上变频信号以产生出站RF信号。

公开(公告)号：US20130272349A1

公开(公告)日：2013-10-17

申请号：US13448980

申请日：2012-04-17

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04L25/49 ,  H04B1/38

CPC分类号： H04B1/525 ,  H03F1/3241 ,  H04B1/0475 ,  H04B2001/0425

摘要： A circuit includes a local oscillator of a transmitter, the local oscillator to generate a transmitter local oscillator signal. A switch controlled by the transmitter local oscillator signal connects with a baseband impedance element to generate a notch frequency signal. The notch frequency signal is added to a transmitter leakage signal to attenuate the transmitter leakage signal prior to demodulation of a desired receiver signal by a receiver.

摘要翻译： 电路包括发射机的本地振荡器，本地振荡器产生发射机本地振荡器信号。 由发射机本地振荡器信号控制的开关与基带阻抗元件连接以产生陷波频率信号。 陷波频率信号被添加到发射机泄漏信号，以在由接收机解调期望的接收机信号之前衰减发射机泄漏信号。

公开(公告)号：US20130070878A1

公开(公告)日：2013-03-21

申请号：US13613624

申请日：2012-09-13

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/10 ,  H04B1/16

CPC分类号： H04B1/28 ,  H04B1/123

摘要： A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter, corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF), to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer frequency translates a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer frequency translates a communication signal using a second local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.

摘要翻译： 公开了一种方法和装置，用于将表征为低质量因子（Q）滤波器的滤波器频率转换成对应于近似零赫兹的基带频率或中频（IF）的滤波器，其特征在于高Q滤波器 在大于基带频率或IF的频率处。 下变频混频器使用第一本地振荡器信号将通信信号转换为基带频率或IF，以提供下变频的通信信号。 对应于基带频率的滤波器或IF对经下变频的通信信号进行滤波以提供经滤波的通信信号。 上变频混频器使用第二本地振荡器信号来转换通信信号。 通过上变频混频器进行的频率转换实际上将滤波器特性从低Q滤波器转换为高于基带频率或IF的频率的高Q滤波器。

公开(公告)号：US08285241B2

公开(公告)日：2012-10-09

申请号：US12461069

申请日：2009-07-30

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/123

摘要： A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF) to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer is used to frequency translate a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter characterized as the low Q filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer is used to frequency translate a communication signal using a second local oscillator signal, the second local oscillator signal being substantially similar in frequency of the first local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.

摘要翻译： 公开了一种方法和装置，以有效地频率转换滤波器，其特征在于对应于大约零赫兹的基带频率的低质量因子（Q）滤波器或者将中频（IF）调频到以频率为高Q滤波器的滤波器 大于基带频率或IF。 下变频混频器用于使用第一本地振荡器信号将通信信号频率转换为基带频率或IF，以提供经下变频的通信信号。 滤波器，其特征在于对应于基带频率的低Q滤波器或IF对下变频通信信号进行滤波以提供经滤波的通信信号。 使用上变频混频器使用第二本地振荡器信号对通信信号进行频率转换，第二本地振荡器信号在第一本机振荡器信号的频率上基本相似。 通过上变频混频器进行的频率转换实际上将滤波器特性从低Q滤波器转换为高于基带频率或IF的频率的高Q滤波器。

公开(公告)号：US20120238232A1

公开(公告)日：2012-09-20

申请号：US13050570

申请日：2011-03-17

申请人： David Murphy ,  Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： David Murphy ,  Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/16 ,  H04B1/30

摘要： Aspects of a method and system for a low-noise, highly-linear receiver front-end are provided. In this regard, a received signal may be processed via one or more transconductances, one or more transimpedance amplifiers (TIAs), and one or more mixers to generate a first baseband signal corresponding to a voltage at a node of the receiver, and a second baseband signal corresponding to a current at the node of the receiver. The first signal and the second signal may be processed to recover information from the received signal. The first signal may be generated via a first one or more signal paths of the receiver and the second signal may be generated via a second one or more signal paths of the receiver.

摘要翻译： 提供了一种用于低噪声，高线性接收机前端的方法和系统。 在这方面，可以经由一个或多个跨导，一个或多个跨阻抗放大器（TIAs）和一个或多个混频器来处理接收的信号，以产生对应于接收机的节点处的电压的第一基带信号，以及第二 对应于接收机节点处的电流的基带信号。 可以处理第一信号和第二信号以从接收的信号中恢复信息。 可以经由接收机的第一个或多个信号路径生成第一信号，并且可以经由接收机的第二个一个或多个信号路径来生成第二信号。

公开(公告)号：US20110300818A1

公开(公告)日：2011-12-08

申请号：US13076262

申请日：2011-03-30

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04W88/02

CPC分类号： H03H7/40 ,  H03H19/008 ,  H04B2001/0491 ,  H04W88/02

摘要： A SAW-less transmitter includes an up-conversion mixing module, a frequency translated BPF (FTBPF), an output module, and a power amplifier driver. The up-conversion mixing module converts an outbound symbol stream into an up-converted signal. The FTBPF frequency translates a baseband filter response to an RF bandpass filter response and filter the up-converted signal in accordance with the RF bandpass filter response to produce a filtered up-converted signal. The output module conditions the filtered up-converted signal to produce a conditioned up-converted signal. The power amplifier driver amplifies the conditioned up-converted signal to produce an outbound RF signal.

摘要翻译： 无SAW发射机包括上变频混频模块，频率转换BPF（FTBPF），输出模块和功率放大器驱动器。 上变频混频模块将出站符号流转换为上变频信号。 FTBPF频率将基带滤波器响应转换为RF带通滤波器响应，并根据RF带通滤波器响应对上变频信号进行滤波，以产生滤波的上变频信号。 输出模块对滤波的上变频信号进行调节，以产生调节的上变频信号。 功率放大器驱动器放大经调节的上变频信号以产生出站RF信号。