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

US07109800B2 Bias circuit for providing a constant bias current to a power amplifier 有权
标题翻译：用于向功率放大器提供恒定偏置电流的偏置电路
公开(公告)号：US07109800B2
公开(公告)日：2006-09-19
申请号：US10807155
申请日：2004-03-24
申请人： Youn Sub Noh , Chul Soon Park
发明人： Youn Sub Noh , Chul Soon Park
IPC分类号： H03F3/04
CPC分类号： H03F1/302 , H03F3/19
摘要： A power amplifier for use in a mobile handset includes an amplifying transistor, a bias circuit including a bias transistor, the bias circuit providing a bias current to bias the amplifying transistor, and a bias current control circuit, responsive to fluctuation in a reference voltage and variation in temperature, for adjusting the bias current to control an operation current of the amplifying transistor.
摘要翻译：一种用于移动手持机的功率放大器，包括放大晶体管，包括偏置晶体管的偏置电路，偏置电路提供偏置电流以偏置放大晶体管;以及偏置电流控制电路，响应于参考电压的波动，以及温度变化，用于调节偏置电流以控制放大晶体管的工作电流。

2. 发明授权

US07005923B2 Adaptive bias circuit for a power amplifier 失效
标题翻译：功率放大器的自适应偏置电路
公开(公告)号：US07005923B2
公开(公告)日：2006-02-28
申请号：US10762185
申请日：2004-01-22
申请人： Youn Sub Noh , Chul Soon Park
发明人： Youn Sub Noh , Chul Soon Park
IPC分类号： H03G3/10
CPC分类号： H03F1/302 , H03F1/0261 , H03G3/3042
摘要： An adaptive bias circuit is provided for an amplifier module including a RF power amplifier for amplifying an input signal to generate an output signal, wherein the bias circuit receives the input signal to adjust a driving current to control a quiescent current of the RF power amplifier. The adaptive bias circuit includes means for providing the driving current to the bias circuit and means for drawing a bypass current from the providing means to reduce the driving current in response to the input signal, wherein the quiescent current is reduced when the driving current is reduced and the bypass current increases when the input signal is reduced.
摘要翻译：提供一种用于放大器模块的自适应偏置电路，该放大器模块包括用于放大输入信号以产生输出信号的RF功率放大器，其中偏置电路接收输入信号以调节驱动电流以控制RF功率放大器的静态电流。自适应偏置电路包括用于向偏置电路提供驱动电流的装置和用于从提供装置抽出旁路电流的装置，以响应于输入信号减小驱动电流，其中当驱动电流减小时，静态电流减小并且当输入信号减小时旁路电流增加。

3. 发明授权

US06744321B2 Bias control circuit for power amplifier 失效
标题翻译：功率放大器偏置控制电路
公开(公告)号：US06744321B2
公开(公告)日：2004-06-01
申请号：US10387062
申请日：2003-03-11
申请人： Youn Sub Noh , Ji Hoon Kim , Chul Soon Park , Joon Hyung Kim
发明人： Youn Sub Noh , Ji Hoon Kim , Chul Soon Park , Joon Hyung Kim
IPC分类号： H03F304
CPC分类号： H03F1/0261 , H03F1/302 , H03F3/72 , H03F2200/18
摘要： A bias control circuit for a power amplifier including an RF amplifier having a transistor for power amplification, comprises two components. A first component is a bias circuit having an active bias transistor operating in an active mode and connected to a predetermined Vref pin to provide the transistor for power amplification with a base current and a second component is a bias current control circuit having another active bias transistor connected to a predetermined Vcon pin and turned on or off depending on a high or a low mode of the Vcon pin to thereby control a base current and a quiescent current of the transistor for power amplification.
摘要翻译：一种用于功率放大器的偏置控制电路，包括具有用于功率放大的晶体管的RF放大器，包括两个部件。第一分量是偏置电路，其具有以有源模式工作的有源偏置晶体管，并连接到预定的Vref引脚，以提供具有基极电流的功率放大的晶体管，而第二分量是具有另一有源偏置晶体管的偏置电流控制电路连接到预定的Vcon引脚，并根据Vcon引脚的高或低模式导通或截止，从而控制用于功率放大的晶体管的基极电流和静态电流。

4. 发明授权

US06803822B2 Power amplifier having a bias current control circuit 失效
标题翻译：功率放大器具有偏置电流控制电路
公开(公告)号：US06803822B2
公开(公告)日：2004-10-12
申请号：US10389053
申请日：2003-03-14
申请人： Ji Hoon Kim , Youn Sub Noh , Chul Soon Park , Joon Hyung Kim
发明人： Ji Hoon Kim , Youn Sub Noh , Chul Soon Park , Joon Hyung Kim
IPC分类号： H03F304
CPC分类号： H03F1/302 , H03F3/04 , H03F2200/18
摘要： A power amplifier for use in a mobile handset includes an amplifying transistor for generating an output of the mobile handset, a bias circuit having a bias transistor and providing a bias current to bias the amplifying transistor, and a bias current control circuit, responsive to a control signal, for adjusting the bias current to control an operation current of the amplifying transistor. The control signal is generated by the mobile handset, and the control signal is determined by a power level of the output of the mobile handset.
摘要翻译：一种用于移动手持机的功率放大器，包括用于产生移动手持机的输出的放大晶体管，具有偏置晶体管并提供偏置电流以偏置放大晶体管的偏置电路，以及偏置电流控制电路，响应于控制信号，用于调整偏置电流以控制放大晶体管的工作电流。控制信号由移动手持机生成，并且控制信号由移动手持机的输出的功率电平决定。

5. 发明授权

US08207781B2 SPDT switch for radio frequency switching and method for enhancing isolation thereof 失效
标题翻译：用于射频切换的SPDT开关和用于增强其隔离的方法
公开(公告)号：US08207781B2
公开(公告)日：2012-06-26
申请号：US12822718
申请日：2010-06-24
申请人： Youn Sub Noh , In Bok Yom
发明人： Youn Sub Noh , In Bok Yom
IPC分类号： H03K17/72
CPC分类号： H03K17/005 , H03K17/567 , H03K17/693
摘要： Provided is an SPDT switch having improved isolation characteristics in an RF band. The SPDT switch includes a serial switching unit, a current sink unit, a switching isolation unit, and a DC blocking unit. The serial switching unit includes first and second HBTs. The current sink unit sinks a current flowing from a common input terminal to each of first and second output terminals of the serial switching unit. The switching isolation unit causes an unselected output terminal of the first and second output terminals to be electrically isolated from the common input terminal when the serial switching unit operates. The DC blocking unit blocks a DC between the first HBT and the first output terminal and a DC between the second HBT and the second output terminal. Accordingly, it is possible to provide better insertion-loss and isolation characteristics in higher frequency bands than typical switches.
摘要翻译：提供了在RF频带中具有改进的隔离特性的SPDT开关。 SPDT开关包括串行开关单元，电流吸收单元，开关隔离单元和DC阻断单元。串行切换单元包括第一和第二HBT。当前的接收单元吸收从公共输入端子流向串行切换单元的第一和第二输出端子的电流。当串行切换单元工作时，开关隔离单元使得第一和第二输出端子的未选择的输出端子与公共输入端子电隔离。 DC阻断单元阻止第一HBT与第一输出端之间的DC和第二HBT与第二输出端之间的DC。因此，可以在比典型的开关更高的频带中提供更好的插入损耗和隔离特性。

6. 发明申请

US20110148548A1 LINE FILTER FORMED ON DIELECTRIC LAYERS 失效
标题翻译：线性滤波器形成介质层
公开(公告)号：US20110148548A1
公开(公告)日：2011-06-23
申请号：US12823198
申请日：2010-06-25
申请人： Man Seok Uhm , Changsoo Kwak , Youn Sub Noh , In Bok Yom
发明人： Man Seok Uhm , Changsoo Kwak , Youn Sub Noh , In Bok Yom
IPC分类号： H01P1/203
CPC分类号： H01P1/20345
摘要： Provided is a line filter. The line filter includes a plurality of dielectric layers stacked one another, a plurality of line resonator each comprising transmission lines on at least two of the dielectric layers, and a tuning unit adjusting a binding amount and resonance frequency of the line resonators. Since the line filter includes at least one line resonator on at least two stacked dielectric layers, the integration can be easily realized. Further, since the line filter can be adjusted even after the line filter is manufacture, the line filter has an excellent frequency property. Since the line filter is realized on the plurality of the dielectric layers, the frequency band can be widened.
摘要翻译：提供线路滤波器。线路滤波器包括彼此堆叠的多个电介质层，多个线谐振器，每个线谐振器包括在至少两个电介质层上的传输线，以及调谐单元，调节线谐振器的绑定量和谐振频率。由于线路滤波器在至少两个堆叠的电介质层上包括至少一个线谐振器，所以可以容易地实现集成。此外，由于即使在线路滤波器制造之后也可以调节线路滤波器，所以线路滤波器具有优异的频率特性。由于在多个电介质层上实现线路滤波器，因此能够扩大频带。

7. 发明授权

US08410872B2 Line filter formed on dielectric layers 失效
标题翻译：线路滤波器形成在电介质层上
公开(公告)号：US08410872B2
公开(公告)日：2013-04-02
申请号：US12823198
申请日：2010-06-25
申请人： Man Seok Uhm , Changsoo Kwak , Youn Sub Noh , In Bok Yom
发明人： Man Seok Uhm , Changsoo Kwak , Youn Sub Noh , In Bok Yom
IPC分类号： H01P1/203 , H01P7/08
CPC分类号： H01P1/20345
摘要： Provided is a line filter. The line filter includes a plurality of dielectric layers stacked one another, a plurality of line resonator each comprising transmission lines on at least two of the dielectric layers, and a tuning unit adjusting a binding amount and resonance frequency of the line resonators. Since the line filter includes at least one line resonator on at least two stacked dielectric layers, the integration can be easily realized. Further, since the line filter can be adjusted even after the line filter is manufacture, the line filter has an excellent frequency property. Since the line filter is realized on the plurality of the dielectric layers, the frequency band can be widened.
摘要翻译：提供线路滤波器。线路滤波器包括彼此堆叠的多个电介质层，多个线谐振器，每个线谐振器包括在至少两个电介质层上的传输线，以及调谐单元，调节线谐振器的绑定量和谐振频率。由于线路滤波器在至少两个堆叠的电介质层上包括至少一个线谐振器，所以可以容易地实现集成。此外，由于即使在线路滤波器制造之后也可以调节线路滤波器，所以线路滤波器具有优异的频率特性。由于在多个电介质层上实现线路滤波器，所以能够扩大频带。

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