-
公开(公告)号：US20070205827A1
公开(公告)日：2007-09-06
申请号：US10594289
申请日：2005-03-11
申请人： Christopher Mobbs
发明人： Christopher Mobbs
IPC分类号： H03F3/68
CPC分类号： H03F1/0288 , H03F3/602 , H03F2200/192 , H03F2200/198 , H03F2200/204
摘要： A Doherty amplifier is described which comprises: a power splitter (120) having a first output and a second output, wherein the first output is connected to a main power splitter (392) having first and second outputs which differ in phase by 90°; and the second output is connected to an auxiliary power splitter (342) having first and second outputs which differ in phase by 90°; a main final stage amplifier (234) comprising first (324) and second (325) main paired amplifiers, the inputs of which are connected to the first and second outputs of the main power splitter (352); an auxiliary final stage amplifier (244) comprising first (344) and second auxiliary (345) paired amplifiers, the inputs of which are connected to the first and second outputs of the auxiliary power splitter (342); wherein the output from the first main paired amplifier (334) is connected to the output from the first auxiliary paired amplifier (344) by an impedance inverter (250); and the output from the second main paired amplifier (345) is connected to the output from the second auxiliary paired amplifier by an impedance inverter (251); the amplifier being arranged such that a relative phase shift is introduced to the signals input to the main and auxiliary power splitters to offset the phase shift of the impedance inverters.
摘要翻译： 描述了一种Doherty放大器，其包括：具有第一输出和第二输出的功率分配器（120），其中所述第一输出连接到具有第一和第二输出的主功率分配器（392），所述第一和第二输出的相位相差90°; 并且所述第二输出端连接到具有相位相差90°的第一和第二输出的辅助功率分配器（342）; 主终端放大器（234）包括第一（324）和第二（325）主配对放大器，其输入端连接到主功率分配器（352）的第一和第二输出端; 辅助终端放大器（244），包括第一（344）和第二辅助（345）配对放大器，其输入端连接到辅助功率分配器（342）的第一和第二输出端; 其中来自所述第一主配对放大器（334）的输出通过阻抗变换器（250）连接到来自所述第一辅助配对放大器（344）的输出; 并且来自第二主配对放大器（345）的输出通过阻抗反相器（251）连接到来自第二辅助配对放大器的输出; 放大器布置成使得相对相移被引入到输入到主功率分配器和辅助功率分配器的信号，以抵消阻抗逆变器的相移。
-
公开(公告)号：US20120293275A1
公开(公告)日：2012-11-22
申请号：US13520646
申请日：2011-01-05
摘要： An electrical filter for filtering an electrical signal, the filter having a transmission characteristic comprising a band edge at a band edge transition frequency, the filter comprising a circulator having a first circulator port for receiving a signal to be filtered, the circulator being adapted to transfer a signal received at the first circulator port to a second circulator port and being further adapted to transfer a signal received at the second circulator port to a third circulator port; and, a reflection mode filter connected to the second port; the reflection mode filter comprising a filter network comprising at least one resonator, the filter network having a network input connected to the second circulator port; and, a further resonator connected to the network input, the further resonator being arranged to provide an extracted pole providing a transmission zero closest to the band edge transition frequency; wherein the further resonator has a high Q compared to the low Q of at least one of the at least one resonator of the filter network.
摘要翻译： 一种用于对电信号进行滤波的滤波器，该滤波器具有包括带边沿跃迁频率的带边的传输特性，该滤波器包括具有用于接收待滤波信号的第一循环器端口的循环器，该循环器适于传送 在第一循环器端口处接收的信号到第二循环端口，并且还适于将在第二循环器端口处接收的信号传送到第三循环端口; 和连接到第二端口的反射模式滤波器; 所述反射模式滤波器包括包括至少一个谐振器的滤波器网络，所述滤波器网络具有连接到所述第二循环器端口的网络输入; 以及连接到所述网络输入的另外的谐振器，所述另外的谐振器被布置成提供提供的极点，其提供最接近所述带边缘跃迁频率的传输零点; 其中与滤波器网络的至少一个谐振器中的至少一个的低Q相比，另外的谐振器具有高Q。
-
公开(公告)号：US09147922B2
公开(公告)日：2015-09-29
申请号：US13520646
申请日：2011-01-05
摘要： An electrical filter for filtering an electrical signal, the filter having a transmission characteristic comprising a band edge at a band edge transition frequency, the filter comprising a circulator having a first circulator port for receiving a signal to be filtered, the circulator being adapted to transfer a signal received at the first circulator port to a second circulator port and being further adapted to transfer a signal received at the second circulator port to a third circulator port; and, a reflection mode filter connected to the second port; the reflection mode filter comprising a filter network comprising at least one resonator, the filter network having a network input connected to the second circulator port; and, a further resonator connected to the network input, the further resonator being arranged to provide an extracted pole providing a transmission zero closest to the band edge transition frequency; wherein the further resonator has a high Q compared to the low Q of at least one of the at least one resonator of the filter network.
摘要翻译： 一种用于对电信号进行滤波的滤波器，该滤波器具有包括带边沿跃迁频率的带边沿的传输特性，该滤波器包括具有用于接收待滤波信号的第一循环器端口的循环器，该循环器适于传送 在第一循环器端口处接收到的信号到第二循环端口，并且还适于将在第二循环端口处接收的信号传送到第三循环端口; 和连接到第二端口的反射模式滤波器; 所述反射模式滤波器包括包括至少一个谐振器的滤波器网络，所述滤波器网络具有连接到所述第二循环器端口的网络输入; 以及连接到所述网络输入的另外的谐振器，所述另外的谐振器被布置成提供提供的极点，其提供最接近所述带边缘跃迁频率的传输零点; 其中与滤波器网络的至少一个谐振器中的至少一个的低Q相比，另外的谐振器具有高Q。
-
公开(公告)号：US20100073111A1
公开(公告)日：2010-03-25
申请号：US12523225
申请日：2008-01-07
申请人： Nicholas Archer , Christopher Mobbs
发明人： Nicholas Archer , Christopher Mobbs
IPC分类号： H01P7/06
CPC分类号： H01P7/04
摘要： A TEM mode resonator includes a tuneable cavity defined by an electrically conducting cavity wall. The cavity wall includes a grounding face, a capacitor face and a surrounding wall extending therebetween. An electrically conducting resonator member is disposed within the cavity and extends from the grounding face part way towards the capacitor face. A portion of the resonator member proximate to the capacitor face includes a recess defining an aperture. A tuning mechanism disposed outside the tuneable cavity, includes a tuning arm extending into the tuneable cavity through the aperture. The tuning mechanism is adapted to displace the tuning arm towards and away from the capacitor face. At least a portion of the tuning arm disposed within the cavity is the tuning element, which is formed of either a metal or a dielectric.
摘要翻译： TEM模式谐振器包括由导电腔壁限定的可调节腔。 空腔壁包括接地面，电容器面和在其间延伸的周围壁。 导电谐振器构件设置在空腔内并从接地面部分方向朝向电容器面延伸。 谐振器构件的靠近电容器面的部分包括限定孔的凹部。 设置在可调谐空腔外部的调谐机构包括通过该孔延伸到可调谐空腔中的调谐臂。 调谐机构适于使调谐臂朝向和远离电容器面移位。 设置在空腔内的调谐臂的至少一部分是由金属或电介质形成的调谐元件。
-
-
-
搜索结果
4 条记录 (耗时 0.008 秒)