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1. 发明申请

US20120293275A1 ELECTRICAL FILTER 有权
标题翻译：电动过滤器
公开(公告)号：US20120293275A1
公开(公告)日：2012-11-22
申请号：US13520646
申请日：2011-01-05
申请人： John David Rhodes , Christopher Mobbs
发明人： John David Rhodes , Christopher Mobbs
IPC分类号： H01P1/20 , H01P1/38
CPC分类号： H01P1/208 , H01P1/20 , H01P1/38
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。

2. 发明授权

US07161434B2 Amplifier 有权
公开(公告)号：US07161434B2
公开(公告)日：2007-01-09
申请号：US10495815
申请日：2002-10-28
申请人： John David Rhodes
发明人： John David Rhodes
IPC分类号： H03F3/04
CPC分类号： H03F3/217
摘要： An amplifier comprising a field effect transistor, a terminating network comprising inductors connected in series separated by capacitors connected in parallel, a filter and a load, wherein the values of the capacitors and inductors are arranged to present open circuits to a predetermined number of odd harmonics of a signal frequency being amplified, and to present short circuits to a predetermined number of even harmonics of the signal frequency, wherein the normalised values of the inductors and capacitors of the terminating network are selected using the following procedure: Let gr=Cr r odd=Lr r even then g1=1, g1g2=(a); grgr+1=(b), r=2→2m−1 and g2mg2m+1=(c) where (m−1) represents the predetermined number of odd harmonics which are presented with an open circuit 1 m ⁡ ( 2 ⁢ m - 1 ) ( a ) 4 ( 2 ⁢ m - 1 + r ) ⁢ ( 2 ⁢ m - r ) ( b ) 1 m . ( c )

3. 发明授权

US09077064B2 Microwave transmission assembly 有权
标题翻译：微波传输组件
公开(公告)号：US09077064B2
公开(公告)日：2015-07-07
申请号：US13511268
申请日：2010-11-23
申请人： Bosse Franzon , Jan-Erik Lundberg , Rune Johansson , Torbjörn Lindh , Claudia Muñiz Garcia , John David Rhodes
发明人： Bosse Franzon , Jan-Erik Lundberg , Rune Johansson , Torbjörn Lindh , Claudia Muñiz Garcia , John David Rhodes
IPC分类号： H01P5/18 , H01P1/213 , H01P5/04
CPC分类号： H01P1/213
摘要： According to one or more embodiments, a directional filter assembly (10) comprises a multi-port filter circuit (12) for combining or separating signals in specified pass-bands and an isolated port (20) having a resistive load (22), for absorbing out-of-band signals. The assembly further includes a reflective protection device (24) configured to protect the resistive load (22) from being overpowered by out-of-band signal power, based on being configured to reflect or not reflect the out-of-band signals in dependence on the level of out-of-band signal power. In at least one embodiment, the directional filter assembly is configured as a microwave transmission assembly, such as is used for combining signals from two or more base stations, for transmission from a common antennae assembly.
摘要翻译：根据一个或多个实施例，定向滤波器组件（10）包括用于组合或分离指定通带中的信号的多端口滤波器电路（12）和具有电阻负载（22）的隔离端口（20），用于吸收带外信号。组件还包括反射保护装置（24），其被配置为基于被配置为反映或不反映根据条件的带外信号来保护电阻性负载（22）不被带外信号功率过大在带外信号功率的电平上。在至少一个实施例中，定向滤波器组件被配置为微波传输组件，诸如用于组合来自两个或更多个基站的信号，用于从公共天线组件传输。

4. 发明授权

US08704620B2 Linear actuator 有权
标题翻译：线性执行机构
公开(公告)号：US08704620B2
公开(公告)日：2014-04-22
申请号：US12937329
申请日：2009-04-09
申请人： John David Rhodes , Christopher Ian Mobbs , Andrew James Panks
发明人： John David Rhodes , Christopher Ian Mobbs , Andrew James Panks
IPC分类号： H01P7/06 , F16H1/32 , F16B37/00
CPC分类号： F16H25/2009 , F16H25/2003
摘要： A linear actuator includes a drive arm and an extension arm each extending along a common drive axis. One of the arms has a plurality of resiliently deformable fingers extending beyond the end of the arm towards the other arm. At least one of the fingers has a thread on its inner face while the other arm has a threaded portion. At least part of the threaded portion is received between the fingers. The fingers are adapted to urge the threads of the two arms into interengagement such that rotation of the drive arm about the drive axis displaces the extension arm along the drive axis. The two threads are arranged such that when the ridge of one thread is received in the groove of the other thread the two sides of the ridge abut the two edges of the mouth of the groove.
摘要翻译：线性致动器包括驱动臂和延伸臂，每个延伸臂沿公共驱动轴线延伸。其中一个臂具有多个可弹性变形的指状件，其伸出臂的端部朝向另一个臂。至少一个指状物在其内表面上具有螺纹，而另一个臂具有螺纹部分。螺纹部分的至少一部分被接收在指状物之间。手指适于将两个臂的螺纹推动相互接合，使得驱动臂围绕驱动轴的旋转沿着驱动轴线移动延伸臂。两个螺纹被布置成使得当一个螺纹的脊被接收在另一个螺纹的凹槽中时，脊的两侧邻接凹槽的口的两个边缘。

5. 发明申请

US20120309458A1 MICROWAVE TRANSMISSION ASSEMBLY 有权
标题翻译：微波传输总成
公开(公告)号：US20120309458A1
公开(公告)日：2012-12-06
申请号：US13511978
申请日：2010-11-23
申请人： Bosse Franzon , Jan-Erik Lundeberg , Rune Johansson , Torbjorn Lindh , Claudia Muniz Garcia , John David Rhodes
发明人： Bosse Franzon , Jan-Erik Lundeberg , Rune Johansson , Torbjorn Lindh , Claudia Muniz Garcia , John David Rhodes
IPC分类号： H03H7/40 , H04B1/38 , H04W88/08 , H01Q1/50
CPC分类号： H01P1/213
摘要： A microwave transmission assembly comprising a combiner comprising first and second input ports and internal and external output a ports; the combiner being adapted to transfer a signal received at microwave frequency f1 at the first input port to the external output port and signals received at other frequencies to the internal output port; the combiner being further adapted to transfer a signal at a microwave frequency f2 at the second input port to the external output port and signals received at the other frequencies to the internal output port; a resistive load connected to the internal output port; and, a power dependent reflective load connected in series with the resistive load, the power dependent reflective load comprising a reactive element, the reactive element comprising an inductive component and a capacitive component and being adapted to resonate at a load frequency; the impedance of the capacitive component being adapted to drop when the incident microwave power received by the power dependent reflective load exceeds a power limit so switching the power dependent load from a low impedance state to a high impedance state.
摘要翻译：一种微波传输组件，包括组合器，其包括第一和第二输入端口以及内部和外部输出端口; 所述组合器适于将在所述第一输入端口处以微波频率f1接收的信号传送到所述外部输出端口，并将以其他频率接收的信号传送到所述内部输出端口; 组合器还适于将在第二输入端口处的微波频率f2的信号传送到外部输出端口，并将以其它频率接收的信号传送到内部输出端口; 连接到内部输出端口的电阻负载; 以及与所述电阻负载串联连接的与功率相关的反射负载，所述功率相关反射负载包括无功元件，所述电抗元件包括电感分量和电容分量，并且适于在负载频率下谐振; 当由功率相关反射负载接收的入射微波功率超过功率极限时，电容部件的阻抗适于降低，从而将功率相关负载从低阻抗状态切换到高阻抗状态。

6. 发明授权

US07915977B2 Tuneable bandpass filter 有权
标题翻译：可调谐带通滤波器
公开(公告)号：US07915977B2
公开(公告)日：2011-03-29
申请号：US11858024
申请日：2007-09-19
申请人： John David Rhodes , Christopher Ian Mobbs , David Ibbetson
发明人： John David Rhodes , Christopher Ian Mobbs , David Ibbetson
IPC分类号： H01P1/20 , H01P7/06
CPC分类号： H01P1/20
摘要： A tuneable bandpass filter includes a plurality of coupled resonators. A common structure of the filter includes at least one common coupling or one common resonator. An upper loop includes first and second end resonators coupled together by a signal path and further includes at least one further signal path extending between end resonators. The further signal path includes at least one further resonator with the end resonators being coupled to the common structure. A lower loop includes first and second end resonators coupled together by a signal path and further includes at least one further signal path extending between end resonators. The further signal path includes at least one further resonator with the end resonators being coupled to the common structure.
摘要翻译：可调谐带通滤波器包括多个耦合的谐振器。滤波器的共同结构包括至少一个公共耦合或一个公共谐振器。上环路包括通过信号路径耦合在一起的第一和第二端谐振器，并且还包括在端部谐振器之间延伸的至少一个另外的信号路径。另外的信号路径包括至少一个另外的谐振器，其中端部谐振器耦合到公共结构。下环包括通过信号路径耦合在一起的第一和第二端谐振器，并且还包括在端部谐振器之间延伸的至少一个另外的信号路径。另外的信号路径包括至少一个另外的谐振器，其中端部谐振器耦合到公共结构。

7. 发明申请

US20090302939A1 POWER AMPLIFIER WITH DIGITAL PRE-DISTORTION 审中-公开
标题翻译：带数字预失真的功率放大器
公开(公告)号：US20090302939A1
公开(公告)日：2009-12-10
申请号：US12162873
申请日：2007-02-01
申请人： John David Rhodes
发明人： John David Rhodes
IPC分类号： H03F1/26
CPC分类号： H03F3/245 , H03F1/301 , H03F1/3205 , H03F1/3241 , H03F1/56 , H03F3/193 , H03F2200/15 , H03F2200/387 , H03F2200/451 , H03F2201/3224
摘要： A power amplifier using a digitally pre-distorted compound semiconductor transistor is discussed. The amplifier has improved linearity. For a given gate bias voltage, there exists a drain voltage at which the drain current is the same for a pulsed signal as for a DC signal and is invariant to quiescent bias points occurring when a pulsed signal is applied. If an amplifier operates at this point, the trapping effects that lead to memory effects do not affect the dynamic behaviour of a digitally pre-distorted amplifier, resulting in improved linearity. The existence of this point, and it's benefits to the linearity of a digitally pre-distorted amplifier, have not been previously recognised.
摘要翻译：讨论了使用数字预失真化合物半导体晶体管的功率放大器。放大器具有提高的线性度。对于给定的栅极偏置电压，存在漏极电压，对于脉冲信号，漏极电流对于DC信号是相同的，并且对于施加脉冲信号时发生的静态偏置点是不变的。如果此时放大器工作，则导致记忆效应的捕获效应不会影响数字预失真放大器的动态特性，从而提高线性度。这一点的存在，并且对数字预失真放大器的线性度有好处，以前没有被认识到。

8. 发明申请

US20090072927A1 TUNEABLE BANDPASS FILTER 有权
标题翻译： TUNEABLE BANDPASS过滤器
公开(公告)号：US20090072927A1
公开(公告)日：2009-03-19
申请号：US11858024
申请日：2007-09-19
申请人： John David Rhodes , Christopher Ian Mobbs , David Ibbetson
发明人： John David Rhodes , Christopher Ian Mobbs , David Ibbetson
IPC分类号： H01P1/20
CPC分类号： H01P1/20
摘要： A tuneable bandpass filter comprising a plurality of coupled resonators, the filter comprising a common structure comprising at least one common coupling or one common resonator; an upper loop comprising first and second end resonators coupled together by a signal path, the loop further comprising at least one further signal path extending between end resonators, the further signal path comprising at least one further resonator, the end resonators being coupled to the common structure; a lower loop comprising first and second end resonators coupled together by a signal path, the loop further comprising at least one further signal path extending between end resonators, the further signal path comprising at least one further resonator, the end resonators being coupled to the common structure; the resonators being coupled together such that the bandpass filter can be divided into a low pass sub filter and a high pass sub filter, one of the sub filters being arranged to receive the output of the other.
摘要翻译：一种可调谐带通滤波器，包括多个耦合谐振器，所述滤波器包括共同结构，其包括至少一个公共耦合或一个公共谐振器; 上环路包括由信号路径耦合在一起的第一和第二端谐振器，所述环路还包括在端部谐振器之间延伸的至少一个另外的信号路径，所述另外的信号路径包括至少一个另外的谐振器，所述端部谐振器耦合到所述公共端结构体; 下环路包括由信号路径耦合在一起的第一和第二端谐振器，所述环路还包括在端部谐振器之间延伸的至少一个另外的信号路径，所述另外的信号路径包括至少一个另外的谐振器，所述端部谐振器耦合到所述公共端结构体; 谐振器被耦合在一起，使得带通滤波器可以被分成低通子滤波器和高通子滤波器，其中一个子滤波器布置成接收另一个的输出。

9. 发明申请

US20080143456A1 BAND COMBINING FILTER 审中-公开
公开(公告)号：US20080143456A1
公开(公告)日：2008-06-19
申请号：US11611653
申请日：2006-12-15
申请人： John David Rhodes
发明人： John David Rhodes
IPC分类号： H01P5/18
CPC分类号： H01P1/213
摘要： A band combining filter comprising a plurality of cascaded directional filters, each directional filter having at least two inputs and at least two outputs, the nth directional filter being arranged such that the output signals O1 and O2 from the first and second outputs are related to the input signals I1, I2 to the first and second inputs by the relation ( O 1 O 2 ) = ( R n   1 T n   2 T n   1 R n   2 )  ( I 1 I 2 ) with R and T being reflection and transmission functions respectively, characterised in that the directional filters are connected in a cascade with the first and second inputs of the nth directional filter being connected to the first and second outputs of the (n-1)th directional filter respectively in the cascade.

10. 发明授权

US06414571B1 Dual TM mode composite resonator 失效
标题翻译：双TM模复合谐振器
公开(公告)号：US06414571B1
公开(公告)日：2002-07-02
申请号：US09529506
申请日：2000-08-22
申请人： Ian Hunter , John David Rhodes
发明人： Ian Hunter , John David Rhodes
IPC分类号： H01P710
CPC分类号： H01P7/105 , H01P1/2084
摘要： A microwave frequency composite resonator comprising a metal housing having an internal surface and defining a resonator cavity, a dielectric member having a top face and a bottom face and a conducting plate. The dielectric member is located within the resonator cavity and the bottom face of the dielectric member directly abuts the internal surface of the metal housing and the conducting plate directly abuts the top face of the dielectric member.
摘要翻译：一种微波频率复合谐振器，包括具有内表面并限定谐振腔的金属外壳，具有顶面和底面的电介质构件和导电板。电介质构件位于谐振器腔内，并且电介质构件的底面直接邻接金属壳体的内表面，并且导电板直接邻接电介质构件的顶面。

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