公开(公告)号：US4881051A

公开(公告)日：1989-11-14

申请号：US227788

申请日：1988-08-03

Applicant: Wai-Cheung Tang ,  Richard J. Cameron ,  David M. T. Bryant

Inventor： Wai-Cheung Tang ,  Richard J. Cameron ,  David M. T. Bryant

IPC: H01P1/208 ,  H01P1/213 ,  H01P7/10

CPC classification number: H01P1/2084 ,  H01P1/2138 ,  H01P7/10

Abstract: A two, three or four channel multiplexer can be operated in the TE.sub.01.delta. or HE.sub.11.delta. modes, each channel of the multiplexer has one bandpass filter, with each filter usually having a plurality of cavities. One cavity of each filter is a common cavity with all of the other filters of the multiplexer. The common cavity contains one independent dielectric quarter-cut or half-cut image resonator for each filter representing a channel of the multiplexer. Each resonator is mounted on a suitable support the common cavity provides a common junction and contains a loop coupling to couple electromagnetic energy between the various channels. The multiplexer has at least one input and at least one output. Previous microwave multiplexers have a plurality of bandpass filters arranged on a coaxial manifold. With the multiplexer of the present invention, the manifold can be eliminated. Further, at the S-band or L-band, substantial weight and volume savings can be achieved using the multiplexer of the present invention without sacrificing performance. This can be very important for space applications.

公开(公告)号：US5608363A

公开(公告)日：1997-03-04

申请号：US221947

申请日：1994-04-01

Applicant: Richard J. Cameron ,  Wai-Cheung Tang ,  Van Dokas

Inventor： Richard J. Cameron ,  Wai-Cheung Tang ,  Van Dokas

IPC: H01P1/208 ,  H01P1/201

CPC classification number: H01P1/2084

Abstract: The invention relates to a single mode multi-cavity microwave filter that includes a housing formed with a plurality of walls which define at least two rows of side-by-side dielectric loaded cavities, wherein sequential cavities are coupled to one another via slots formed in the walls therebetween and at least one pair of non-sequential adjacent cavities are coupled via a probe. The coupling via the slots is defined mathematically as positive coupling. The probe is selectively configurable to provide positive or negative coupling relative to the sign of the slot coupling. Further, at least one non-adjacent, non-sequential pair of cavities is coupled via a second probe that may be configured to provide either positive or negative coupling relative to the sign of the slot coupling. The filter housing supports a plurality of adjustable fins which extend into the slots, one fin to each slot, to selectively adjust the size of the slot.

Abstract translation: 本发明涉及单模多腔微波过滤器，其包括形成有多个壁的壳体，所述多个壁限定至少两排并排的电介质负载腔，其中顺序腔通过形成在其中的槽 其间的壁和至少一对非顺序相邻的空腔经由探头耦合。 通过槽的耦合在数学上定义为正耦合。 探针可选择性地配置为提供相对于槽耦合的符号的正或负耦合。 此外，至少一个不相邻的非顺序的空腔对经由第二探针耦合，第二探针可以被配置为相对于狭槽耦合的符号提供正或负耦合。 过滤器壳体支撑多个可调节的翅片，其延伸到槽中，一个翅片延伸到每个槽，以选择性地调节槽的尺寸。

公开(公告)号：US4571563A

公开(公告)日：1986-02-18

申请号：US573060

申请日：1984-01-23

Applicant: Richard J. Cameron

Inventor： Richard J. Cameron

IPC: H01P1/208 ,  H01P1/161

CPC classification number: H01P1/2082

Abstract: Cascaded dual-mode resonance cavities are separated by plates having each a cruciform iris therein, the arms of which have lengths determined by a direct and precise procedure starting from a conventional Butterworth prototype filter. The transfer function parameters are altered to change the filter response and the group delay performance is determined and compared to an ideal flat response for producing a penalty function signal from the difference in order to modify the parameters again in such direction that the penalty function signal is likely to be reduced. The process is repeated until the penalty function signal is minimum, whereby a compact structure is realized which provides an attenuation response having sharp cut-off slopes at the edges of the signal bandwidth together with a close to flat in-band group delay response.

Abstract translation: 级联的双模谐振腔由其中每个十字形虹膜的板分开，其臂具有通过从常规的巴特沃斯原型滤波器开始的直接和精确的程序确定的长度。 改变传递函数参数以改变滤波器响应，并且确定组延迟性能并将其与理想平坦响应进行比较，以从该差产生惩罚函数信号，以便在惩罚函数信号为 可能会减少 重复该过程，直到惩罚函数信号为最小，由此实现紧凑的结构，其提供在信号带宽的边缘处具有尖锐的截止斜率的衰减响应以及接近平坦的带内组延迟响应。

公开(公告)号：US5739733A

公开(公告)日：1998-04-14

申请号：US624212

申请日：1996-03-29

Applicant: Richard J. Cameron

Inventor： Richard J. Cameron

IPC: H01P1/20 ,  H01P1/208

CPC classification number: H01P1/20

Abstract: A microwave filter has a plurality of resonant cavities with each cavity containing a dielectric resonator. There are self-equalizing probes or self-equalizing apertures located between some of the cavities. A circulator is connected to an output of the filter. The circulator has an input/output which is connected to an equalizer. The equalizer contains a dielectric resonator that is slightly different from the dielectric resonators of the filter to permit the equalizer to be tuned at a slightly different frequency from the filter. The equalizer and self-equalizing probes or apertures are capable of being operated to reduce a dispersive slope of the filter. The filter can operate in a single mode or a dual mode. The electrical performance of the filter is superior to prior art filters, particularly in the wideband versions because the dispersive slope is reduced.

Abstract translation: 微波滤波器具有多个谐振腔，每个空腔包含介质谐振器。 存在位于一些空腔之间的自平衡探针或自平衡孔。 循环器连接到过滤器的输出。 循环器具有连接到均衡器的输入/输出。 均衡器包含与滤波器的介质谐振器稍微不同的介质谐振器，以允许均衡器以与滤波器稍微不同的频率被调谐。 均衡器和自平衡探针或孔能够被操作以减小过滤器的分散斜率。 滤波器可以在单一模式或双模式下工作。 滤波器的电气性能优于现有技术的滤波器，特别是在宽带版本中，因为分散斜率减小。

公开(公告)号：US4360793A

公开(公告)日：1982-11-23

申请号：US250115

申请日：1981-04-02

Applicant: John D. Rhodes ,  Richard J. Cameron

Inventor： John D. Rhodes ,  Richard J. Cameron

IPC: H01P1/208 ,  H01P1/209

CPC classification number: H01P1/209 ,  H01P1/208

Abstract: An electric transmission structure for implementing a transfer function with finite real-frequency transmission zeros, which comprises a main body comprised of a plurality of resonant cavities placed adjacent to each other with inductive coupling irises between adjacent cavities, the resonant cavities being arranged symmetrically relative to a plane of conjugate symmetry, said main body synthesizing the linear phase part of the filter transfer function, and at least one pair of pole resonant cavities arranged symmetrically relative to said plane of conjugate symmetry, each of said resonant cavity pairs synthesizing a pair of finite real-frequency transmission zeros of the filter transfer function, with the respective pole cavities of each pair being connected across the input and output ends of the main body through phase-shift waveguides having defined phase-shift lengths.

Abstract translation: 一种用于实现具有有限实际传输零点的传递函数的电传输结构，该电传输结构包括由多个相邻的谐振腔组成的主体，在相邻空腔之间具有感应耦合光阑，所述谐振腔相对于 共轭对称平面，所述主体合成滤波器传递函数的线性相位部分，以及相对于所述共轭对称平面对称布置的至少一对极共振腔，每个所述谐振腔对合成一对有限的 滤波器传递函数的实频传输零点，通过具有确定的相移长度的相移波导，每对的相应磁极腔通过主体的输入和输出端连接。

公开(公告)号：US4815075A

公开(公告)日：1989-03-21

申请号：US21908

申请日：1987-03-04

Applicant: Richard J. Cameron

Inventor： Richard J. Cameron

IPC: H01P1/213 ,  H04J1/00 ,  H04J1/12 ,  H04J1/08

CPC classification number: H04J1/12

Abstract: This invention relates to a modular contiguous channel multiplexer having one or more modules that produce an asymmetric filter function that is combined with responses from other modules to produce an overall symmetrical response. The multiplexer can have channels arranged in any order of relative frequencies and one or more channels can be added or removed from the multiplexer without disturbing the operation of the existing or remaining channels. A method of constructing a multiplexer involves choosing the most downstream channel first, then choosing sequentially the channel immediately upstream from the channel last chosen and choosing filters of each channel to meet certain criteria. The filters of each channel are identical to one another but are not necessarily identical to filters in adjacent channels.

Abstract translation: 本发明涉及具有一个或多个模块的模块化连续信道多路复用器，其产生非对称滤波器功能，其与来自其它模块的响应相结合以产生整体对称响应。 多路复用器可以具有以相对频率的任何顺序布置的通道，并且可以从多路复用器添加或移除一个或多个通道，而不会干扰现有或剩余通道的操作。 构建多路复用器的方法包括首先选择最下游信道，然后从上一次选择的信道的上游依次选择信道，并选择每个信道的滤波器以满足某些标准。 每个通道的滤波器彼此相同，但不一定与相邻通道中的滤波器相同。

公开(公告)号：US4544901A

公开(公告)日：1985-10-01

申请号：US571556

申请日：1983-12-29

Applicant: John D. Rhodes ,  Richard J. Cameron

Inventor： John D. Rhodes ,  Richard J. Cameron

IPC: H01P1/208 ,  H01P7/06

CPC classification number: H01P1/2082

Abstract: A structure comprising a cascade of dual mode resonance cavities wherein each cavity has a pair of tuning screws located at 90.degree. to each other in a sectional plane of the cavity and a coupling screw located at 45.degree. to the tuning screws for coupling the two resonances supported by the cavity. Each cavity is coupled to the adjacent cavity by means of a coupling iris set at a determined angle relative to the angular position of the tuning screws of the cavity and the adjacent cavity is positioned at a determined angle relative to the angular position of the coupling iris which couples said cavity to the former one.

Abstract translation: PCT No.PCT / BE82 / 00015 Sec。 371日期：1983年12月29日 102（e）日期1983年12月29日PCT申请1982年6月11日PCT公布。 出版物WO83 / 04457 日期：1983年12月22日。一种包括级联的双模共振腔的结构，其中每个空腔具有一对在空腔的截面中彼此成90°的调谐螺钉和位于45°的耦合螺钉 用于耦合由腔支持的两个谐振的调谐螺钉。 每个空腔借助于相对于空腔的调谐螺钉的角位置以确定的角度设置的耦合光阑耦合到相邻的空腔，并且相邻的空腔相对于联接光圈的角位置被定位成确定的角度 这种情况与前者相吻合。