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公开(公告)号：US07941475B2
公开(公告)日：2011-05-10
申请号：US11501382
申请日：2006-08-09
Applicant: Rahim Bagheri , Ahmad Mirzaei
Inventor： Rahim Bagheri , Ahmad Mirzaei
IPC: G06G7/02
CPC classification number: H03H15/02
Abstract: Embodiments of the present invention include programmable filter circuits and methods. In one embodiment, the present invention includes a programmable filter for filtering an input signal comprising a storage element for storing a plurality of digital values representing a discrete time window function, and a plurality of filter channels, each channel comprising a multiplying digital-to-analog converter having a plurality of digital inputs coupled to the storage element and an analog input for receiving said input signal to be filtered, at least one capacitor having at least one terminal coupled to an output of the multiplying digital-to-analog converter, and a sampling device coupled between the at least one terminal of the at least one capacitor and an output of the filter. In another embodiment, the present invention includes a software defined radio.
Abstract translation: 本发明的实施例包括可编程滤波器电路和方法。 在一个实施例中，本发明包括一个可编程滤波器，用于对输入信号进行滤波，该输入信号包括用于存储表示离散时间窗函数的多个数字值的存储元件和多个滤波器通道，每个通道包括乘法数字 - 模拟转换器，其具有耦合到存储元件的多个数字输入端和用于接收要滤波的所述输入信号的模拟输入端，至少一个电容器，其至少一个端子耦合到乘法数模转换器的输出端，以及 耦合在所述至少一个电容器的所述至少一个端子和所述滤波器的输出端之间的采样装置。 在另一个实施例中，本发明包括软件定义的无线电装置。
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公开(公告)号：US07924802B2
公开(公告)日：2011-04-12
申请号：US12018370
申请日：2008-01-23
Applicant: Alireza Tarighat-Mehrabani , Rahim Bagheri , Alireza Mehrnia , Mahmoud Darvishzadeh
Inventor： Alireza Tarighat-Mehrabani , Rahim Bagheri , Alireza Mehrnia , Mahmoud Darvishzadeh
CPC classification number: H04L27/2601 , H04B1/0067 , H04B1/0483 , H04L1/0668
Abstract: Embodiments of the present invention transmit signals simultaneously over a communication channel at different RF center frequencies, and may use a single power amplifier and antenna. In one embodiment the present invention includes a method of transmitting information in a wireless communication channel comprising receiving digital signals having data to be transmitted, converting the signals to analog signals, up-converting each analog signal, combining the up-converted signals, amplifying the combined up-converted signal and transmitting the combined up-converted signal. In one embodiment, the same data is sent over a transmission channel at two different frequencies to improve reliability.
Abstract translation: 本发明的实施例通过不同RF中心频率的通信信道同时发送信号，并且可以使用单个功率放大器和天线。 在一个实施例中，本发明包括一种在无线通信信道中发送信息的方法，包括接收具有要发送的数据的数字信号，将信号转换为模拟信号，对每个模拟信号进行上变频，组合上变频信号， 组合上变频信号并发送组合上变频信号。 在一个实施例中，通过传输信道以两个不同的频率发送相同的数据以提高可靠性。
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公开(公告)号：US20100044093A1
公开(公告)日：2010-02-25
申请号：US12197866
申请日：2008-08-25
Applicant: Kaveh Moazzami , Mahdi Bagheri , Edris Rostami , Rahim Bagheri
Inventor： Kaveh Moazzami , Mahdi Bagheri , Edris Rostami , Rahim Bagheri
IPC: H01R12/04
CPC classification number: H05K1/0228 , H04L25/0272 , H05K1/0245 , H05K3/4685 , H05K2201/097
Abstract: In one embodiment the present invention includes an electrical arrangement comprising conductive elements such as electrical traces. The conductive elements carry differential signals. The conductive elements extend horizontally and have alternating sections around one or more center lines. Ground lines may be included the further enhance signal integrity. In one embodiment, magnetic field cancellation may be achieved by providing an offset between pairs of alternating differential elements.
Abstract translation: 在一个实施例中，本发明包括电气装置，其包括诸如电迹线的导电元件。 导电元件携带差分信号。 导电元件水平延伸并且围绕一个或多个中心线具有交替的部分。 接地线可能包括进一步增强的信号完整性。 在一个实施例中，可以通过在交替的差分元件对之间提供偏移来实现磁场消除。
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公开(公告)号：US20070281656A1
公开(公告)日：2007-12-06
申请号：US11891137
申请日：2007-08-08
Applicant: Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
Inventor： Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
IPC: H04B1/26
CPC classification number: H03D7/1458 , H03D7/1433 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0043
Abstract: Embodiments of the present invention include circuits and methods for improving the spectral purity of mixer circuits. In one embodiment the present invention includes a mixer circuit comprising a first transistor having a gate, a source and a drain, a second transistor having a gate, a source and a drain, a first capacitance coupled between the source of the first transistor and the source of the second transistor and a bias circuit having an input, a first output coupled to the source of the first transistor and a second output coupled to the source of the second transistor. The present invention may be advantageously used in a wireless transmitter application.
Abstract translation: 本发明的实施例包括用于提高混频器电路的频谱纯度的电路和方法。 在一个实施例中，本发明包括一个混频器电路，该混频器电路包括具有栅极，源极和漏极的第一晶体管，具有栅极，源极和漏极的第二晶体管，第一电容耦合在第一晶体管的源极和 第二晶体管的源极和具有输入的偏置电路，耦合到第一晶体管的源极的第一输出端和耦合到第二晶体管源极的第二输出端。 本发明可以有利地用于无线发射机应用中。
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公开(公告)号：US07289783B2
公开(公告)日：2007-10-30
申请号：US11262685
申请日：2005-10-31
Applicant: Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
Inventor： Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
CPC classification number: H03D7/1458 , H03D7/1433 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0043
Abstract: Embodiments of the present invention include circuits and methods for improving the spectral purity of mixer circuits. In one embodiment the present invention includes a mixer circuit including a bias circuit, the bias circuit comprising a first transistor having a gate, a source, and a drain, wherein the drain is coupled to a first input of the mixer circuit, a first sensing circuit coupled to the source of the first transistor, and a first comparison circuit coupled to the first sensing circuit, wherein the first comparison circuit receives a feedback signal from the first sensing circuit and a reference voltage, and in accordance therewith, generates a bias control signal to control the bias at the gate of the first transistor.
Abstract translation: 本发明的实施例包括用于提高混频器电路的频谱纯度的电路和方法。 在一个实施例中，本发明包括一个包括偏置电路的混频器电路，偏置电路包括具有栅极，源极和漏极的第一晶体管，其中漏极耦合到混频器电路的第一输入端，第一感测 耦合到第一晶体管的源极的电路以及耦合到第一感测电路的第一比较电路，其中第一比较电路接收来自第一感测电路的反馈信号和参考电压，并且根据其产生偏置控制 信号以控制第一晶体管的栅极处的偏置。
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Patent Agency Ranking
公开(公告)号：US07271668B2
公开(公告)日：2007-09-18
申请号：US11106902
申请日：2005-04-14
Applicant: Rahim Bagheri , Masoud Djafari
Inventor： Rahim Bagheri , Masoud Djafari
CPC classification number: H03D7/1441 , H03D7/1433 , H03D7/1458 , H03D7/1483 , H03D7/165 , H03D2200/0043
Abstract: Embodiments of the present invention include mixer circuits and methods with improved spectral purity. In one embodiment the present invention includes a mixer circuit comprising a first transistor having a gate, a source and a drain, a second transistor having a gate, a source and a drain, a first capacitance coupled between the source of the first transistor and the source of the second transistor and a bias circuit having an input, a first output coupled to the source of the first transistor and a second output coupled to the source of the second transistor. The present invention may be advantageously used in a wireless transmitter application.
Abstract translation: 本发明的实施例包括具有改善的光谱纯度的混合电路和方法。 在一个实施例中，本发明包括一个混频器电路，该混频器电路包括具有栅极，源极和漏极的第一晶体管，具有栅极，源极和漏极的第二晶体管，第一电容耦合在第一晶体管的源极和 第二晶体管的源极和具有输入的偏置电路，耦合到第一晶体管的源极的第一输出端和耦合到第二晶体管源极的第二输出端。 本发明可以有利地用于无线发射机应用中。
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公开(公告)号：US20070096830A1
公开(公告)日：2007-05-03
申请号：US11256118
申请日：2005-10-21
Applicant: Abbas Komijani , Edris Rostami , Masoud Djafari , Rahim Bagheri
Inventor： Abbas Komijani , Edris Rostami , Masoud Djafari , Rahim Bagheri
IPC: H03F3/191
CPC classification number: H03F1/48 , H03F3/191 , H03F3/45179 , H03F3/45475 , H03F2200/168 , H03F2200/36 , H03F2203/45302 , H03F2203/45318 , H03F2203/45342 , H03F2203/45354
Abstract: Embodiments of the present invention include circuits and methods with wide bandwidths. In one embodiment, parasitic capacitances of the output of a first stage and the input of a second stage are included in a network. The output of the first stage is coupled to the input of the network, and the input of the second stage is coupled to an intermediate node of the network. In one embodiment, the parasitic capacitance of the second stage is the largest capacitance in the network.
Abstract translation: 本发明的实施例包括具有宽带宽的电路和方法。 在一个实施例中，第一级的输出和第二级的输入的寄生电容包括在网络中。 第一级的输出耦合到网络的输入，并且第二级的输入耦合到网络的中间节点。 在一个实施例中，第二级的寄生电容是网络中最大的电容。
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公开(公告)号：US20070090877A1
公开(公告)日：2007-04-26
申请号：US11584453
申请日：2006-10-20
Applicant: Mahdi Bagheri , Rahim Bagheri , Ahmad Mirzaei , Abbas Komijani , Edris Rostami , Masoud Djafari
Inventor： Mahdi Bagheri , Rahim Bagheri , Ahmad Mirzaei , Abbas Komijani , Edris Rostami , Masoud Djafari
IPC: H03F3/45
CPC classification number: H03F1/48 , H03F3/191 , H03F3/45179 , H03F3/45475 , H03F2200/168 , H03F2200/36 , H03F2203/45302 , H03F2203/45318 , H03F2203/45342 , H03F2203/45354
Abstract: Embodiments of the present invention include circuits and methods with wide bandwidths. In one embodiment, parasitic capacitances of the output of a first stage and the input of a second stage are included in a network. The output of the first stage is coupled to the input of the network, and the input of the second stage is coupled to an intermediate node of the network. In one embodiment, the parasitic capacitance of the second stage is the largest capacitance in the network. In another embodiment, passive networks are coupled to the outputs of a stage, and one or more current injection circuits may be used to extend the bandwidth of the circuit.
Abstract translation: 本发明的实施例包括具有宽带宽的电路和方法。 在一个实施例中，第一级的输出和第二级的输入的寄生电容包括在网络中。 第一级的输出耦合到网络的输入，并且第二级的输入耦合到网络的中间节点。 在一个实施例中，第二级的寄生电容是网络中最大的电容。 在另一个实施例中，无源网络耦合到级的输出，并且可以使用一个或多个电流注入电路来扩展电路的带宽。
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公开(公告)号：US08169266B2
公开(公告)日：2012-05-01
申请号：US11891137
申请日：2007-08-08
Applicant: Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
Inventor： Edris Rostami , Rahim Bagheri , Masoud Djafari , Abbas Komijani
CPC classification number: H03D7/1458 , H03D7/1433 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0043
Abstract: Embodiments of the present invention include circuits and methods for improving the spectral purity of mixer circuits. In one embodiment the present invention includes a mixer circuit comprising a first transistor having a gate, a source and a drain, a second transistor having a gate, a source and a drain, a first capacitance coupled between the source of the first transistor and the source of the second transistor and a bias circuit having an input, a first output coupled to the source of the first transistor and a second output coupled to the source of the second transistor. The present invention may be advantageously used in a wireless transmitter application.
Abstract translation: 本发明的实施例包括用于提高混频器电路的频谱纯度的电路和方法。 在一个实施例中，本发明包括一个混频器电路，该混频器电路包括具有栅极，源极和漏极的第一晶体管，具有栅极，源极和漏极的第二晶体管，第一电容耦合在第一晶体管的源极和 第二晶体管的源极和具有输入的偏置电路，耦合到第一晶体管的源极的第一输出端和耦合到第二晶体管源极的第二输出端。 本发明可以有利地用于无线发射机应用中。
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公开(公告)号：US20070024330A1
公开(公告)日：2007-02-01
申请号：US11142705
申请日：2005-06-01
Applicant: Ahmad Mirzaei , Mohammad Heidari , Masoud Djafari , Rahim Bagheri
Inventor： Ahmad Mirzaei , Mohammad Heidari , Masoud Djafari , Rahim Bagheri
IPC: H03K23/00
Abstract: Embodiments of the present invention include circuits and methods for dividing high frequency signals. In one embodiment the present invention includes a divider circuit comprising a differential circuit having first and second inputs to receive a first differential signal, a first frequency control input and first and second differential outputs, wherein the differential circuit has a first bias current. The divider circuit further includes a cross-coupled circuit having outputs coupled to the differential circuit outputs and a second frequency control input, wherein the cross-coupled circuit has a second bias current. Embodiments of the present invention may include circuits for controlling the relationship between bias currents and circuit parameters that vary with process or temperature or both.
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