公开(公告)号：US20090041157A1

公开(公告)日：2009-02-12

申请号：US12217812

申请日：2008-07-09

Applicant: Derek J. Small

Inventor： Derek J. Small

IPC: H04L27/20

CPC classification number: H04L27/12 ,  H04H20/30 ,  H04H20/46 ,  H04H2201/183

Abstract: A method and apparatus are disclosed for combining digital sidebands with an FM analog signal for IBOC transmission by a single antenna. Specifically, a high power filter combiner for combining an FM analog and a digital signal of the same channel, or frequency, is disclosed. The combiner has two inputs that respectively receive an FM analog and a digital signal to be transmitted in the same FM channel. The combiner has mild tuned filters interposed between the inputs and the output which are tuned to pass the FM analog signal while reflecting the digital signal such that the passed FM analog signal and the reflected digital signal combine as IBOC, i.e., an FM analog signal with digital sideband signals. The combined IBOC signal is provided at an output of the combiner, capable for transmission through a single antenna.

Abstract translation: 公开了一种用于将数字边带与FM模拟信号组合以通过单个天线进行IBOC传输的方法和装置。 具体地，公开了用于组合FM模拟和相同信道或频率的数字信号的高功率滤波器组合器。 组合器有两个输入，分别接收FM模拟信号和数字信号以在相同的FM信道中传输。 组合器具有介于输入和输出之间的温和调谐滤波器，其被调谐以通过FM模拟信号同时反映数字信号，使得经过的FM模拟信号和反射数字信号组合为IBOC，即FM模拟信号与 数字边带信号。 组合的IBOC信号提供在组合器的输出端，能够通过单个天线进行传输。

公开(公告)号：US07945225B2

公开(公告)日：2011-05-17

申请号：US12217812

申请日：2008-07-09

Applicant: Derek J. Small

Inventor： Derek J. Small

IPC: H04B17/02

CPC classification number: H04L27/12 ,  H04H20/30 ,  H04H20/46 ,  H04H2201/183

Abstract: A method and apparatus are disclosed for combining digital sidebands with an FM analog signal for IBOC transmission by a single antenna. Specifically, a high power filter combiner for combining an FM analog and a digital signal of the same channel, or frequency, is disclosed. The combiner has two inputs that respectively receive an FM analog and a digital signal to be transmitted in the same FM channel. The combiner has mild tuned filters interposed between the inputs and the output which are tuned to pass the FM analog signal while reflecting the digital signal such that the passed FM analog signal and the reflected digital signal combine as IBOC, i.e., an FM analog signal with digital sideband signals. The combined IBOC signal is provided at an output of the combiner, capable for transmission through a single antenna.

Abstract translation: 公开了一种用于将数字边带与FM模拟信号组合以通过单个天线进行IBOC传输的方法和装置。 具体地，公开了用于组合FM模拟和相同信道或频率的数字信号的高功率滤波器组合器。 组合器有两个输入，分别接收FM模拟信号和数字信号以在相同的FM信道中传输。 组合器具有介于输入和输出之间的温和调谐滤波器，其被调谐以通过FM模拟信号同时反映数字信号，使得经过的FM模拟信号和反射的数字信号组合为IBOC，即FM模拟信号与 数字边带信号。 组合的IBOC信号提供在组合器的输出端，能够通过单个天线进行传输。

公开(公告)号：USRE40890E1

公开(公告)日：2009-09-01

申请号：US10437616

申请日：2003-05-14

Applicant: Derek J. Small ,  John A. Lunn

Inventor： Derek J. Small ,  John A. Lunn

IPC: H01P1/20 ,  H01P7/06 ,  H01P7/00

CPC classification number: H01P1/208

Abstract: A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The compensation relies on deformation of the shape of at least one cavity surface in response to thermally-induced dimensional changes of the cavity. A control rod is used to limit the movement of a point on the deformed surface, while the rest of the surface moves with the thermal expansion. The control rod is made of a material having a coefficient of thermal expansion that is significantly different than that of other filter components. The rod may also be arranged to span more thermally expandable material than defines the filter such that, as the filter expands, the point of deflection is moved toward the interior of the filter beyond its original position. A similar effect may be accomplished by connecting the control rod to an end deflecting rod that does the actual limiting of the movement of the deflection point. If the end deflecting rod has a coefficient of thermal expansion that is higher than that of the control rod, the end deflecting rod will expand with temperature relative to the end of the control rod, forcing the deflection point inward.

Abstract translation: 带通滤波器利用至少一个被热补偿的波导腔，以使空腔的共振频率随空腔部件的热膨胀最小化。 该补偿依赖于响应于空腔的热诱导尺寸变化的至少一个空腔表面的形状的变形。 控制杆用于限制变形表面上的点的移动，而表面的其余部分随着热膨胀而移动。 控制杆由具有与其它过滤器部件的热膨胀系数显着不同的热膨胀系数的材料制成。 杆也可以被布置成跨越比限定过滤器更多的热膨胀材料，使得当过滤器膨胀时，偏转点朝向过滤器的内部移动超过其原始位置。 可以通过将控制杆连接到实际限制偏转点的移动的端部偏转杆来实现类似的效果。 如果端部偏转杆的热膨胀系数高于控制棒的热膨胀系数，则端部偏转杆将相对于控制棒的端部的温度膨胀，迫使偏转点向内。

公开(公告)号：US07142837B1

公开(公告)日：2006-11-28

申请号：US10833935

申请日：2004-04-28

Applicant: Derek J. Small

Inventor： Derek J. Small

IPC: H04B1/16 ,  H01P7/00

CPC classification number: H01P1/2053

Abstract: A multiple-section bandpass filter for broadcast communications includes adjacent waveguide segments with a perpendicular connecting segment between them to form a U-shaped signal path. The waveguide cavities of the segments may be extruded and rectangular in cross section, and have a groundplane spacing that allows signal propagation between filter sections by evanescent coupling. Resonators in each of the adjacent segments have a separation that establishes the coupling bandwidths without the need for passive decoupling structures. A cross coupling conductor between the adjacent segments provides a capacitive or inductive coupling between them. A decoupling structure may be located in the connecting segment.

Abstract translation: 用于广播通信的多段带通滤波器包括在它们之间具有垂直连接段的相邻波导段，以形成U形信号路径。 该段的波导腔可以是横截面挤出的和矩形的，并且具有允许通过ev逝耦合在滤波器段之间传播信号的接地面间隔。 每个相邻段中的谐振器具有建立耦合带宽而不需要被动解耦结构的分离。 相邻段之间的交叉耦合导体在它们之间提供电容或电感耦合。 解耦结构可以位于连接段中。

公开(公告)号：US06529104B1

公开(公告)日：2003-03-04

申请号：US09505256

申请日：2000-02-16

Applicant: Derek J. Small ,  John A. Lunn

Inventor： Derek J. Small ,  John A. Lunn

IPC: H01P120

CPC classification number: H01P1/208

Abstract: A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The compensation relies on deformation of the shape of at least one cavity surface in response to thermally induced dimensional changes of the cavity. A control rod is used to limit the movement of a point on the deformed surface, while the rest of the surface moves with the thermal expansion. The control rod is made of a material having a coefficient of thermal expansion that is significantly different than that of other filter components. The rod may also be arranged to span more thermally expandable material than defines the filter such that, as the filter expands, the point of deflection is moved toward the interior of the filter beyond its original position. In an alternative embodiment, an end plate of each cavity is secured to the rest of the cavity along its periphery, and has a convex shape facing away from an interior of the cavity. As the cavity expands radially, it forces the convexity of the end plate inward, compensating for the expansion in other cavity dimensions.

Abstract translation: 带通滤波器利用至少一个被热补偿的波导腔，以使空腔的共振频率随空腔部件的热膨胀最小化。 补偿依赖于响应于空腔的热引起的尺寸变化的至少一个空腔表面的形状的变形。 控制杆用于限制变形表面上的点的移动，而表面的其余部分随着热膨胀而移动。 控制杆由具有与其它过滤器部件的热膨胀系数显着不同的热膨胀系数的材料制成。 杆也可以被布置成跨越比限定过滤器更多的热膨胀材料，使得当过滤器膨胀时，偏转点朝向过滤器的内部移动超过其原始位置。 在替代实施例中，每个空腔的端板沿其周边固定到空腔的其余部分，并且具有背离空腔内部的凸形状。 当空腔径向扩张时，它迫使端板的凸起向内，补偿其他腔体尺寸的膨胀。

公开(公告)号：US06232852B1

公开(公告)日：2001-05-15

申请号：US09251247

申请日：1999-02-16

Applicant: Derek J. Small ,  John A. Lunn

Inventor： Derek J. Small ,  John A. Lunn

IPC: H01P120

CPC classification number: H01P1/208

Abstract: A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The compensation relies on deformation of the shape of at least one cavity surface in response to thermally-induced dimensional changes of the cavity. A control rod is used to limit the movement of a point on the deformed surface, while the rest of the surface moves with the thermal expansion. The control rod is made of a material having a coefficient of thermal expansion that is significantly different than that of other filter components. The rod may also be arranged to span more thermally expandable material than defines the filter such that, as the filter expands, the point of deflection is moved toward the interior of the filter beyond its original position. A similar effect may be accomplished by connecting the control rod to an end deflecting rod that does the actual limiting of the movement of the deflection point. If the end deflecting rod has a coefficient of thermal expansion that is higher than that of the control rod, the end deflecting rod will expand with temperature relative to the end of the control rod, forcing the deflection point inward.

Abstract translation: 带通滤波器利用至少一个被热补偿的波导腔，以使空腔的共振频率随空腔部件的热膨胀最小化。 该补偿依赖于响应于空腔的热诱导尺寸变化的至少一个空腔表面的形状的变形。 控制杆用于限制变形表面上的点的移动，而表面的其余部分随着热膨胀而移动。 控制杆由具有与其它过滤器部件的热膨胀系数显着不同的热膨胀系数的材料制成。 杆也可以被布置成跨越比限定过滤器更多的热膨胀材料，使得当过滤器膨胀时，偏转点朝向过滤器的内部移动超过其原始位置。 可以通过将控制杆连接到实际限制偏转点的移动的端部偏转杆来实现类似的效果。 如果端部偏转杆的热膨胀系数高于控制棒的热膨胀系数，则端部偏转杆将相对于控制棒的端部的温度膨胀，迫使偏转点向内。