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公开(公告)号：US07079816B2
公开(公告)日：2006-07-18
申请号：US10460607
申请日：2003-06-12
IPC分类号： H04B1/44
CPC分类号： H04B1/44
摘要： An on chip diversity antenna switch includes a first switch, a second switch, a third switch, and a fourth switch. The first switch is operably coupled to a pin associated with a first antenna, to a transmit path and to receive a transmit receive (T/R) control signal. The second switch is operably coupled to the pin associated with the first antenna, to a receive path, and to receive the T/R control signal. The third switch is operably coupled to a pin associated with a second antenna, the transmit path, and to receive the T/R control signal. The fourth switch is operably coupled to the pin associated with the second antenna, to the receive path, and to receive the T/R control signal. Based on the T/R control signal, the first or second antenna is coupled to the transmit or receive path via a single switch.
摘要翻译： 片上分集式天线开关包括第一开关，第二开关，第三开关和第四开关。 第一开关可操作地耦合到与第一天线相关联的引脚到发射路径并且接收发射接收（T / R）控制信号。 第二开关可操作地耦合到与第一天线相关联的引脚到接收路径，并且接收T / R控制信号。 第三开关可操作地耦合到与第二天线相关联的引脚，发射路径，并且接收T / R控制信号。 第四开关可操作地耦合到与第二天线相关联的引脚到接收路径，并且接收T / R控制信号。 基于T / R控制信号，第一或第二天线通过单个开关耦合到发射或接收路径。
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公开(公告)号：US20090196375A1
公开(公告)日：2009-08-06
申请号：US12427618
申请日：2009-04-21
申请人： Chin Ming Chien , Bojko F. Marholev
发明人： Chin Ming Chien , Bojko F. Marholev
CPC分类号： H03K4/502
摘要： Embodiments of the present invention provide an oscillator circuit having a steady output frequency that is independent of the supplied voltage. This oscillator includes a Schmitt trigger circuit which may be implemented within an integrated circuit of a wireless terminal or other like portable electronic device. The Schmitt trigger circuit receives a threshold voltage input and a second voltage input. The Schmitt trigger circuit generates an output voltage equal to either a first output voltage or a second output voltage based on the results of comparing the threshold voltage input to the second voltage input. An RC network may be coupled to the output of the Schmitt trigger circuit and is operable to supply the second voltage input to the Schmitt trigger circuit. A voltage divider network also couples to the output of the Schmitt trigger circuit wherein the threshold voltage input is proportional to the first output voltage reduced by the voltage divider network based on the output voltage of the Schmitt trigger circuit.
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公开(公告)号：US07881677B2
公开(公告)日：2011-02-01
申请号：US11902630
申请日：2007-09-24
IPC分类号： H04B1/44
CPC分类号： H04B5/02 , H04B5/0093
摘要： A chip comprises and operational section and an input/output section. The operational section includes a controller. The input/output (I/O) section is coupled to the operational section. The I/O section comprises a transformer and a switching device. The transformer includes a primary side connected to first and second I/O ports and a secondary side connected to the operational section. The switching device is coupled to the controller and between the first and second I/O ports and a bias port, such that, under control of the controller, the switching device connects one of the first and second I/O ports to the bias port.
摘要翻译： 芯片包括操作部分和输入/输出部分。 操作部分包括控制器。 输入/输出（I / O）部分耦合到操作部分。 I / O部分包括变压器和开关装置。 变压器包括连接到第一和第二I / O端口的初级侧和连接到操作部分的次级侧。 开关装置耦合到控制器并且在第一和第二I / O端口与偏置端口之间，使得在控制器的控制下，开关装置将第一和第二I / O端口中的一个连接到偏置端口 。
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公开(公告)号：US07526256B2
公开(公告)日：2009-04-28
申请号：US11136850
申请日：2005-05-25
申请人： Iqbal Bhatti , Jesus Castaneda , Bojko F. Marholev
发明人： Iqbal Bhatti , Jesus Castaneda , Bojko F. Marholev
摘要： An apparatus and method for allowing two different signal paths to be coupled to a multi-tap transformer balun. The multi-tap transformer has a first port, which is coupled to a single antenna, and two or more differential secondary ports. Each port has one or more taps, which are optimized separately for each of the signal paths, allowing each of the two or more signal paths to operate in different frequency bands. Use of the method of the invention can decrease the number of external components and integrated circuit package pins, and reduce the area required for each signal path on an integrated circuit die, a printed circuit board, or the like.
摘要翻译： 一种用于允许两个不同信号路径耦合到多抽头变压器平衡 - 不平衡转换器的装置和方法。 多抽头变压器具有耦合到单个天线的第一端口和两个或更多个差分辅助端口。 每个端口具有一个或多个抽头，其针对每个信号路径分别优化，允许两个或多个信号路径中的每一个在不同频带中操作。 使用本发明的方法可以减少外部部件和集成电路封装引脚的数量，并且减小集成电路管芯，印刷电路板等上的每个信号路径所需的面积。
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公开(公告)号：US08112044B2
公开(公告)日：2012-02-07
申请号：US12984072
申请日：2011-01-04
IPC分类号： H04B1/44
CPC分类号： H04B5/02 , H04B5/0093
摘要： A transceiver is provided for wireless communication. The transceiver can include a bias source, a transformer including a primary side and a secondary side, and a switching device. During a receive mode, the primary side of the transformer is configured to receive a first signal from a first port. During a transmission mode, the primary side is configured to transmit a second signal from a second port. The switching device is configured to couple the first port to the bias source during transmission of the second signal and to couple the second port to the bias source during receipt of the first signal. The bias source can be, for example, ground.
摘要翻译： 提供收发器用于无线通信。 收发器可以包括偏置源，包括初级侧和次级侧的变压器以及开关装置。 在接收模式期间，变压器的初级侧被配置为从第一端口接收第一信号。 在传输模式期间，初级侧被配置为从第二端口发送第二信号。 开关装置被配置为在传输第二信号期间将第一端口耦合到偏置源，并且在接收到第一信号期间将第二端口耦合到偏置源。 偏置源可以是例如地面。
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公开(公告)号：US20110051868A1
公开(公告)日：2011-03-03
申请号：US12552047
申请日：2009-09-01
CPC分类号： H04B1/18
摘要： A receiver within a wireless device is able to couple to different antennas with different impedances. The wireless device includes a first antenna pin for coupling to a first antenna with a first impedance, a second antenna pin for coupling to a second antenna with a second impedance and a switch for selecting at least one of the first antenna and the second antenna to couple to the receiver.
摘要翻译： 无线设备内的接收机能够耦合到具有不同阻抗的不同天线。 该无线设备包括用于与第一阻抗耦合到第一天线的第一天线引脚，用于耦合到具有第二阻抗的第二天线的第二天线引脚和用于选择第一天线和第二天线中的至少一个的开关 耦合到接收器。
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公开(公告)号：US07529317B2
公开(公告)日：2009-05-05
申请号：US11236191
申请日：2005-09-27
申请人： Chin Ming Chien , Bojko F. Marholev
发明人： Chin Ming Chien , Bojko F. Marholev
IPC分类号： H04L27/00
CPC分类号： H03K4/502
摘要： Embodiments of the present invention provide an oscillator circuit having a steady output frequency that is independent of the supplied voltage. This oscillator includes a Schmitt trigger circuit which may be implemented within an integrated circuit of a wireless terminal or other like portable electronic device. The Schmitt trigger circuit receives a threshold voltage input and a second voltage input. The Schmitt trigger circuit generates an output voltage equal to either a first output voltage or a second output voltage based on the results of comparing the threshold voltage input to the second voltage input. An RC network may be coupled to the output of the Schmitt trigger circuit and is operable to supply the second voltage input to the Schmitt trigger circuit. A voltage divider network also couples to the output of the Schmitt trigger circuit wherein the threshold voltage input is proportional to the first output voltage reduced by the voltage divider network based on the output voltage of the Schmitt trigger circuit.
摘要翻译： 本发明的实施例提供一种具有稳定的输出频率的振荡器电路，其独立于所提供的电压。 该振荡器包括可在无线终端或其它类似便携式电子设备的集成电路内实施的施密特触发电路。 施密特触发电路接收阈值电压输入和第二电压输入。 基于比较输入到第二电压输入的阈值电压的结果，施密特触发电路产生等于第一输出电压或第二输出电压的输出电压。 RC网络可以耦合到施密特触发电路的输出，并且可操作以将第二电压输入提供给施密特触发电路。 分压网络还耦合到施密特触发电路的输出，其中阈值电压输入与基于施密特触发电路的输出电压的分压器网络降低的第一输出电压成比例。
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公开(公告)号：US07266351B2
公开(公告)日：2007-09-04
申请号：US11348893
申请日：2006-02-07
申请人： Bojko F. Marholev
发明人： Bojko F. Marholev
CPC分类号： H03H11/04 , H03H11/0422 , H03H11/22 , H03H2011/0494 , H03L7/08 , H03L7/0805 , H03L2207/06
摘要： A complex filter such as the channel select filter in a radio transceiver is implemented using a transconductance/C topology to benefit from the ability to tune such filters and thereby stabilize the output transfer function of the filter over variations in temperature, power supply voltage and process. The topology is based on an active R/C biquadratic topology to achieve the additional benefit of independently controlled stages. The problem created by the R in the output impedance is can be overcome by separately tuning the R value along with the transconductance/C ratio, by implementing the R as a transconductance amplifier having common mode feedback, or by implementing the transconductance amplifiers of the topology using Nauta transconductors, and unbalancing the common mode circuit of the Nauta transconductor to achieve a differential resistance that can be used to implement the R in the output impedance.
摘要翻译： 使用跨导/ C拓扑来实现诸如无线电收发器中的通道选择滤波器的复杂滤波器，以从调谐这种滤波器的能力中受益，从而使滤波器的输出传递函数稳定在温度，电源电压和处理的变化上 。 该拓扑结构基于活动的R / C双向拓扑，以实现独立控制级的附加优点。 通过将R作为具有共模反馈的跨导放大器，或通过实现拓扑的跨导放大器，可以通过单独调谐R值与跨导/ C比来克服输出阻抗产生的问题 使用Nauta跨导体，以及不平衡Nauta跨导体的共模电路，以实现可用于在输出阻抗中实现R的差分电阻。
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公开(公告)号：US08208584B2
公开(公告)日：2012-06-26
申请号：US12427618
申请日：2009-04-21
申请人： Chin-Ming Chien , Bojko F. Marholev
发明人： Chin-Ming Chien , Bojko F. Marholev
IPC分类号： H04L27/00
CPC分类号： H03K4/502
摘要： Embodiments of the present invention provide an oscillator circuit having a steady output frequency that is independent of the supplied voltage. This oscillator includes a Schmitt trigger circuit which may be implemented within an integrated circuit of a wireless terminal or other like portable electronic device. The Schmitt trigger circuit receives a threshold voltage input and a second voltage input. The Schmitt trigger circuit generates an output voltage equal to either a first output voltage or a second output voltage based on the results of comparing the threshold voltage input to the second voltage input. An RC network may be coupled to the output of the Schmitt trigger circuit and is operable to supply the second voltage input to the Schmitt trigger circuit. A voltage divider network also couples to the output of the Schmitt trigger circuit wherein the threshold voltage input is proportional to the first output voltage reduced by the voltage divider network based on the output voltage of the Schmitt trigger circuit.
摘要翻译： 本发明的实施例提供一种具有稳定的输出频率的振荡器电路，其独立于所提供的电压。 该振荡器包括可在无线终端或其它类似便携式电子设备的集成电路内实施的施密特触发电路。 施密特触发电路接收阈值电压输入和第二电压输入。 基于比较输入到第二电压输入的阈值电压的结果，施密特触发电路产生等于第一输出电压或第二输出电压的输出电压。 RC网络可以耦合到施密特触发电路的输出，并且可操作以将第二电压输入提供给施密特触发电路。 分压网络还耦合到施密特触发电路的输出，其中阈值电压输入与基于施密特触发电路的输出电压的分压器网络降低的第一输出电压成比例。
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公开(公告)号：US20100014200A1
公开(公告)日：2010-01-21
申请号：US12568453
申请日：2009-09-28
申请人： Bojko F. Marholev
发明人： Bojko F. Marholev
IPC分类号： H02H9/04
CPC分类号： H01Q1/50
摘要： An ESD protection circuit for a switch coupled to high-speed signaling pins of an integrated circuit includes a first string of clamping elements and a second string of clamping elements. The first string of clamping elements has a collective capacitance less than the capacitance of a single clamping element. The first string of clamping elements is operably coupled to the drain and source of the transistor and conducts when a first polarity ESD voltage is applied to the high-speed pins. The second string of clamping elements has a collective capacitance less than the capacitance of one clamping element. The second string of clamping elements is operably coupled to the drain and source of the transistor and conducts when a second polarity ESD voltage is applied to the high speed signaling pins.
摘要翻译： 耦合到集成电路的高速信号引脚的开关的ESD保护电路包括第一串夹紧元件和第二串夹紧元件串。 第一组夹紧元件的集合电容小于单个夹紧元件的电容。 第一串夹紧元件可操作地耦合到晶体管的漏极和源极，并且当第一极性ESD电压施加到高速引脚时导通。 第二组夹紧元件的集合电容小于一个夹紧元件的电容。 第二串夹紧元件可操作地耦合到晶体管的漏极和源极，并且当第二极性ESD电压施加到高速信号引脚时导通。
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