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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

US08554277B2 Microwave transmission assembly 有权
标题翻译：微波传输组件
公开(公告)号：US08554277B2
公开(公告)日：2013-10-08
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： H04M1/00 , H04B1/38
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。

4. 发明授权

US08228135B2 Band combining filter 有权
标题翻译：带组合滤波器
公开(公告)号：US08228135B2
公开(公告)日：2012-07-24
申请号：US12390788
申请日：2009-02-23
申请人： John David Rhodes
发明人： John David Rhodes
IPC分类号： H01P5/12 , H01P5/18
CPC分类号： H01P1/213
摘要： A band combining filter for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs. The nth directional filter is arranged such that output signals O1 and O2 from the first and second outputs are related to 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. 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. At least one of the reflection functions Rn overlaps with the corresponding reflection function Rn−1 within the communication band but is different thereto.
摘要翻译：用于在通信频带中传递信号的频带组合滤波器包括多个级联方向滤波器。每个方向滤波器至少有两个输入和至少两个输出。第n方向滤波器被布置成使得来自第一和第二输出的输出信号O1和O2与第一和第二输入的输入信号I1，I2相关联（O 1 O 2）=（R n⁢1 T 其中R和T分别是反射和传输函数。方向滤波器级联连接，第n方向滤波器的第一和第二输入端分别连接到第（n-1）方向滤波器的第一和第二输出端。反射函数Rn中的至少一个与通信带内的对应反射函数Rn-1重叠，但与其不同。

5. 发明申请

US20110115577A1 LINEAR ACTUATOR 有权
标题翻译：线性执行器
公开(公告)号：US20110115577A1
公开(公告)日：2011-05-19
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： F16H25/12 , H01P7/06
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。

6. 发明申请

US20110001585A1 TUNEABLE FILTER AND A METHOD OF TUNING SUCH A FILTER 审中-公开
标题翻译：可调滤波器和调节滤波器的方法
公开(公告)号：US20110001585A1
公开(公告)日：2011-01-06
申请号：US12675878
申请日：2008-08-05
申请人： John David Rhodes , Andrew James Panks , Christopher Ian Mobbs
发明人： John David Rhodes , Andrew James Panks , Christopher Ian Mobbs
IPC分类号： H01P1/20
CPC分类号： H01P7/04 , H01P7/06
摘要： A tuneable filter comprising a filter body defining a tuning cavity; a tuning member within the tuning cavity; and, a linear actuator adapted to displace the tuning member within the cavity to tune the filter; the linear actuator comprising a motor; a drive arm connected to the motor and extending along a drive axis, the drive arm being adapted to be rotated about the drive axis by the motor; an extension arm extending along the drive axis being connected at one end to the tuning member and being in engagement with the drive arm at the other end; the engagement between the drive arm and extension arm being arranged such that rotation of the drive arm about the drive axis displaces the extension arm along the drive axis; each of the drive arm and extension arm comprising an end stop, the end stops being arranged such that as the extension arm reaches the end of its range of travel towards the drive arm the drive arm end stop rotates into abutment with the extension arm end stop, preventing further rotation of the drive arm.
摘要翻译：一种可调谐滤波器，包括限定调谐腔的滤波器主体; 调谐腔内的调谐构件; 以及线性致动器，其适于使所述调谐构件在所述空腔内移位以调谐所述过滤器; 所述线性致动器包括马达; 驱动臂，其连接到所述电动机并沿着驱动轴线延伸，所述驱动臂适于通过所述电动机围绕所述驱动轴线旋转; 沿着驱动轴延伸的延伸臂在一端连接到调谐构件并且在另一端处与驱动臂接合; 驱动臂和延伸臂之间的接合被布置成使得驱动臂围绕驱动轴的旋转沿着驱动轴线使延伸臂移位; 驱动臂和延伸臂中的每一个包括端部止动件，端部止动件布置成使得当延伸臂到达驱动臂的行进范围的端部时，驱动臂端部止动件转动成与延伸臂端部停止，防止驱动臂进一步旋转。

7. 发明申请

US20090231056A1 Band Combining Filter 有权
公开(公告)号：US20090231056A1
公开(公告)日：2009-09-17
申请号：US12390788
申请日：2009-02-23
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 for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs. The nth directional filter is arranged such that output signals O1 and O2 from the first and second outputs are related to 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. 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. At least one of the reflection functions Rn overlaps with the corresponding reflection function Rn−1 within the communication band but is different thereto

8. 发明申请

US20090224833A1 AMPLIFIER 审中-公开
标题翻译：放大器
公开(公告)号：US20090224833A1
公开(公告)日：2009-09-10
申请号：US12094023
申请日：2005-11-16
申请人： John David Rhodes
发明人： John David Rhodes
IPC分类号： H03F3/16
CPC分类号： H03F1/301 , H03F1/0261 , H03F1/3241 , H03F3/193
摘要： An amplifier comprising a digitally pre-distorted Laterally Diffused Metal Oxide Semiconductor (LDMOS) transistor and a biassing circuit is described. The gate bias voltage defines an operating point of the LDMOS transistor such that the quiescent drain current of the LDMOS transistor is substantially invariant when an input signal of varying power is applied. The quiescent drain current is the drain current of the at least one LDMOS transistor when the input signal is instantaneously removed. Such an amplifier has reduced intermodulation products in its output for input signals of varying power levels. The intermodulation products are reduced for input signals of less than maximum power as well as maximum power.
摘要翻译：描述了包括数字预失真的侧向扩散金属氧化物半导体（LDMOS）晶体管和偏置电路的放大器。栅极偏置电压定义了LDMOS晶体管的工作点，使得当施加变化的功率的输入信号时，LDMOS晶体管的静态漏极电流基本上是不变的。当输入信号被瞬时去除时，静态漏极电流是至少一个LDMOS晶体管的漏极电流。这种放大器在其输出中减少了具有不同功率电平的输入信号的互调产物。对于小于最大功率和最大功率的输入信号，互调产物被减少。

9. 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。

10. 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。

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