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公开(公告)号：US5869429A
公开(公告)日：1999-02-09
申请号：US848715
申请日：1997-05-19
Applicant: Satyendranath Das
Inventor： Satyendranath Das
CPC classification number: H01P1/2013 , Y10S505/70 , Y10S505/701 , Y10S505/866
Abstract: A main symmetrical CPW structure is formed by depositing three parallel films of a conductor on a film of a single crystal ferroelectric material. Cavities are formed by placing irises in a main CPW structure. These cavities are tuned to a dominant resonant frequency. By the application of a bias voltage to the main CPW structure with cavities, the permittivity of the film of the ferroelectric material, underneath the CPW structure, is changed. Thus the dominant resonant frequency of the filter is changed. By changing the level of the bias voltages, different dominant resonant frequencies of the filter are obtained. Thus a tunable band pass filter is obtained. With branch cavities on a CPW structure deposited on a ferroelectric film, a tunable band reject filter is obtained.
Abstract translation: 主要对称CPW结构通过在单晶铁电材料的膜上沉积导体的三个平行膜而形成。 腔是通过将虹膜置于主CPW结构中而形成的。 这些空腔被调谐到主谐振频率。 通过对具有空腔的主CPW结构施加偏置电压，改变在CPW结构下面的铁电体的膜的介电常数。 因此，滤波器的主要谐振频率发生变化。 通过改变偏置电压的电平，可以获得滤波器的不同的主谐振频率。 从而获得可调带通滤波器。 由于在沉积在铁电体膜上的CPW结构上具有分支腔，因此获得可调带阻滤波器。
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72.发明授权Electromagnetic filter having a transmission line disposed in a cover of the filter housing 失效电磁滤波器，其具有布置在过滤器壳体的盖中的传输线
公开(公告)号：US5843871A
公开(公告)日：1998-12-01
申请号：US556371
申请日：1995-11-13
Applicant: Mostafa A. Beik , H. Clark Bell , Amr Abdelmonem
Inventor： Mostafa A. Beik , H. Clark Bell , Amr Abdelmonem
CPC classification number: H01P1/2053 , Y10S505/70 , Y10S505/866
Abstract: An electromagnetic filter has a unitary filter body defining a number of cavities. A cover for the filter body has several resonators attached to it which are located in the cavities when the cover is attached to the filter body. The cover has a recess into which a transmission line is placed. Passageways through the cover connect the transmission line with coupling mechanisms mounted on the cover adjacent the resonators. The resonators have a generally toroidal shape and the coupling mechanisms are shaped to provide the desired coupling between the transmission line and the resonators. An adjustable capacitor attached to the coupling loop has a passageway through its housing to eliminate moisture from the capacitor. The resonator and cavities may be tuned by use of a tuning mechanism which is also designed to minimize moisture which might prevent movement of the tuner during tuning.
Abstract translation: 电磁滤波器具有限定多个空腔的整体滤波器主体。 用于过滤器主体的盖具有附接到其上的几个谐振器，当盖附接到过滤器主体时，它们位于空腔中。 盖有一个凹槽，传输线放置在该凹槽中。 通过盖的通道将传输线与安装在与谐振器相邻的盖上的耦合机构连接。 谐振器具有大致的环形形状，并且耦合机构被成形为在传输线和谐振器之间提供期望的耦合。 连接到耦合回路的可调节电容器具有通过其外壳的通道，以消除电容器的湿气。 谐振器和空腔可以通过使用调谐机构进行调谐，调谐机构也被设计成最小化湿度，这可能防止调谐器在调谐期间的移动。
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73.发明授权High performance dual mode microwave filter with cavity and conducting or superconducting loading element 失效高性能双模式微波滤波器，带腔和导电或超导载荷元件
公开(公告)号：US5804534A
公开(公告)日：1998-09-08
申请号：US633705
申请日：1996-04-19
Applicant: Kawthar Abdelhamid Zaki
Inventor： Kawthar Abdelhamid Zaki
CPC classification number: H01P1/2086 , Y10S505/70 , Y10S505/866
Abstract: A microwave filter has at least one resonator with a cavity and a conducting or superconducting loading element inside the cavity. The resonator also has first and second tuning screws at right angles and a mode coupling screw at 45.degree. angles to both tuning screws. This filter can achieve a high Q in a small size.
Abstract translation: 微波滤波器具有至少一个具有空腔的谐振器和腔内的导电或超导负载元件。 谐振器还具有直角的第一和第二调谐螺钉和与两个调谐螺钉成45度角的模式联接螺钉。 该过滤器可以实现小尺寸的高Q。
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公开(公告)号：US5543764A
公开(公告)日：1996-08-06
申请号：US202902
申请日：1994-02-28
Applicant: Aimo Turunen , Heli Jantunen
Inventor： Aimo Turunen , Heli Jantunen
CPC classification number: H01P1/20336
Abstract: A transmission line filter comprises four resonators (100, 200, 300, 400), and transmission zeroes can be added to the transfer function of the filter using a known phasing coupling technique using a transmission line (53, 54) coupled between two resonators. The location of the transmission zeroes can be varied using control circuits (A,B). Each control circuit comprises a series coupled inductance (55, 58) and capacitance (56, 59) forming a resonance circuit, the resonance frequency of which can be varied using a variable d.c. voltage (V.sub.1, V.sub.2). The inductance of each control circuit is arranged adjacent its respective transmission line so that the two are weakly electromagnetically coupled. By supplying the variable voltage to the resonance circuits, normal operation of the phasing coupling is affected, thereby varying the location of the transmission zero. One or more control circuits can be provided for filters having transmission zeroes in their transfer function which need to be varied. The provision of these control circuits allow transmission zeroes to be selected in situ, rather than solely during manufacture.
Abstract translation: 传输线滤波器包括四个谐振器（100,200,300,400），并且可以使用使用耦合在两个谐振器之间的传输线（53,54）的已知的相位耦合技术将传输零点添加到滤波器的传递函数。 传输零点的位置可以使用控制电路（A，B）来改变。 每个控制电路包括形成谐振电路的串联耦合电感（55,58）和电容（56,59），其谐振频率可以使用可变直流电而变化。 电压（V1，V2）。 每个控制电路的电感被布置在其相应的传输线附近，使得两个电感被弱电磁耦合。 通过向谐振电路提供可变电压，相关耦合的正常操作受到影响，从而改变了传输零点的位置。 可以提供一个或多个控制电路用于其传输函数中需要改变的传输零点的滤波器。 这些控制电路的提供允许在原位选择传输零点，而不是仅在制造期间选择。
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公开(公告)号：US5461352A
公开(公告)日：1995-10-24
申请号：US125841
申请日：1993-09-24
Applicant: Yasumasa Noguchi , Hideyuki Miyake , Junya Ishii , Yukihiro Takeda
Inventor： Yasumasa Noguchi , Hideyuki Miyake , Junya Ishii , Yukihiro Takeda
CPC classification number: H01P1/201
Abstract: A bandpass filter for the transmission of signals within a predetermined frequency bandwidth having a center frequency, which provides for substantial attenuation of the harmonic components of the center frequency of the filter. The bandpass filter includes at least one resonator comprising a strip conductor and a ground conductor formed on the surface of a dielectric substrate. The strip conductor is capacitively coupled to the ground conductor so as to substantially transmit the harmonic components of the center frequency of the filter to ground.
Abstract translation: 一种用于在具有中心频率的预定频率带宽内传输信号的带通滤波器，其提供滤波器的中心频率的谐波分量的实质衰减。 带通滤波器包括至少一个谐振器，该谐振器包括形成在电介质基片的表面上的带状导体和接地导体。 带状导体电容耦合到接地导体，以便将滤波器的中心频率的谐波分量基本上传输到地。
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Patent Agency Ranking
公开(公告)号：US5276412A
公开(公告)日：1994-01-04
申请号：US890424
申请日：1992-05-29
Applicant: Takehiko Yoneda , Kazuhiro Eguchi , Hiromitsu Taki
Inventor： Takehiko Yoneda , Kazuhiro Eguchi , Hiromitsu Taki
CPC classification number: H01P1/2053
Abstract: A high-frequency filter of the type having a plurality of resonators open at least at one end thereof, a dielectric board forming an input/output coupling and an interstage coupling, and a case for holding therein the resonators and the dielectric board, wherein the dielectric board is made of a ceramic having a critical stress intensity factor K.sub.1c of not less than 5 MPa.multidot.m.sup.1/2 and a dielectric dissipation factor tan. .delta. of not exceeding 1% in a working frequency band of said high-frequency filter, and wherein electrodes are provided on the dielectric board to form an input/output coupling capacity and an interstage coupling capacity. The high-frequency filter of the foregoing construction has the advantage of an excellent mechanical strength which is capable of withstanding severe mechanical loads such as falling impacts or various stresses.
Abstract translation: 一种高频滤波器，其具有至少在其一端开放的多个谐振器，形成输入/输出耦合的介质板和级间耦合，以及用于保持谐振器和电介质板的壳体，其中， 电介质板由具有不小于5MPa * m1 / 2的临界应力强度因子K1c和介电损耗因数tan的陶瓷制成。 （delta）在所述高频滤波器的工作频带中不超过1％，并且其中电极设置在电介质板上以形成输入/输出耦合能力和级间耦合能力。 上述结构的高频过滤器具有优异的机械强度的优点，其能够承受严重的机械负载，例如落下的冲击或各种应力。
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公开(公告)号：US4365214A
公开(公告)日：1982-12-21
申请号：US190464
申请日：1980-09-24
Applicant: Robert W. Shillady
Inventor： Robert W. Shillady
Abstract: A semiconductor mounting and matching assembly capable of performing over a frequency range to 20 GHz and higher comprising a coaxial transmission line having a first portion with a first end for receiving radio-frequency signals and providing an input impedance and a second portion with a second signal output end providing a termination characteristic impedance. A semiconductor diode which is hermetically sealed within and removable with the second portion is mounted at the second end and has a load resistance terminating the transmission line. The transmission line has a plurality of sections for providing elements of a network which transforms the input impedance and matches the termination characteristic impedance of the second end of the transmission line to the load resistance of the semiconductor device. The elements of the network are provided by the configurations and discontinuities of the sections of the transmission line and the capacitive and inductive properties provided by the semiconductor device, whereby the network incorporates therein the parasitic reaction elements of the semiconductor device so that said assembly transmits radio-frequency signals from its input end to the semiconductor device at its output end with low reflection and attenuation over a wide-band of frequencies.
Abstract translation: 一种能够在20GHz及更高频率范围内执行的半导体安装和匹配组件，包括具有第一部分的同轴传输线，第一部分具有用于接收射频信号的第一端并提供输入阻抗，第二部分具有第二信号 输出端提供端接特性阻抗。 密封在第二部分内并可移除的半导体二极管安装在第二端，并具有终止传输线的负载电阻。 传输线具有用于提供变换输入阻抗并将传输线的第二端的终端特性阻抗与半导体器件的负载电阻相匹配的网络元件的多个部分。 网络的元件由传输线的部分的配置和不连续性以及由半导体器件提供的电容和电感特性提供，由此网络中包含半导体器件的寄生反应元件，使得所述组件传输无线电 在其输出端从其输入端到半导体器件的频率信号在宽带频带上具有低反射和衰减。
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公开(公告)号：US4291286A
公开(公告)日：1981-09-22
申请号：US104624
申请日：1979-12-17
Applicant: Gary L. Wagner
Inventor： Gary L. Wagner
CPC classification number: H03H15/00
Abstract: A high bandwidth transversal filter is described having an input impedance matching network, a tapped delay line, a plurality of weighting amplifiers, a distributed summing circuit, and an output impedance matching network. The delay line is implemented with a transmission line. The input impedance of this transversal filter depends on the inductance and capacitance of the transmission line and the capacitance of the inputs of each of the FET's used as weighting amplifiers. The gates of the FET's provide high impedance low loss taps of the delay line. The weighting is accomplished by either varying the drain current of the FET's or by using capacitive voltage dividers to apportion the tapped signals. The resulting weighted signals are applied to a distributed summing circuit which provides both high bandwidth summing and additional delays. This summer is also implemented with a tapped transmission line. The output impedance of this transversal filter depends on the inductance and capacitance of the summing line and the capacitance of the output of each FET. The parameters of the transmission lines constituting the input delay line and the distributed summer can be selected to provide broadband impedance matching for the input and output of the filter. The FET's thus act as high impedance taps, as weighting amplifiers, and as part of the input and output impedance matching networks.
Abstract translation: 描述了具有输入阻抗匹配网络，抽头延迟线，多个加权放大器，分布式求和电路和输出阻抗匹配网络的高带宽横向滤波器。 延迟线用传输线实现。 该横向滤波器的输入阻抗取决于传输线的电感和电容以及用作加权放大器的每个FET的输入电容。 FET的栅极提供延迟线的高阻抗低损耗抽头。 加权是通过改变FET的漏极电流或使用电容分压器来分配抽头信号来实现的。 所得到的加权信号被应用于提供高带宽求和和附加延迟的分布式求和电路。 今年夏天也实施了一个抽头传输线。 该横向滤波器的输出阻抗取决于求和线的电感和电容以及每个FET的输出电容。 可以选择构成输入延迟线和分布式加法器的传输线的参数，为滤波器的输入和输出提供宽带阻抗匹配。 因此，FET因此作为高阻抗抽头，作为加权放大器，并且作为输入和输出阻抗匹配网络的一部分。
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公开(公告)号：US4284966A
公开(公告)日：1981-08-18
申请号：US106413
申请日：1979-12-21
Applicant: Ronald J. Wanat
Inventor： Ronald J. Wanat
CPC classification number: H01P1/205
Abstract: A helical resonator filter with increased bandwidth is provided for use as a wideband bandpass filter. The device is composed of a series of helical resonators cells cascaded with non-uniform cell spacing, thus providing an increase in coupling coefficients between cells. The increased bandwidth is thereby obtained without placing a burden on the exterior housing dimensions relative to a normally spaced narrow bandwidth filter and without substantially reducing the unloaded Q's or increasing insertion losses.
Abstract translation: 提供带宽增加的螺旋谐振器滤波器用作宽带带通滤波器。 该器件由一系列具有不均匀单元间隔的螺旋谐振器单元组成，从而提高了单元之间的耦合系数。 由此可以获得增加的带宽，而不会相对于正常间隔的窄带宽滤波器而对外部外壳尺寸造成负担，并且基本上不减少无负载的Q或增加插入损耗。
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公开(公告)号：US4137501A
公开(公告)日：1979-01-30
申请号：US719930
申请日：1976-09-02
Applicant: Yoshitaka Kuroyanagi , Tatsuo Teratani
Inventor： Yoshitaka Kuroyanagi , Tatsuo Teratani
CPC classification number: H04B1/12
Abstract: A noise suppression device for noisy transmission wires in a motor vehicle including a first low impedance element connected to an arbitrarily chosen point on the noisy wire and a second low impedance element connected at the nodal point of the standing wave of the noise current on the noisy wire.
Abstract translation: 一种用于机动车辆中噪声传输线的噪声抑制装置，包括连接到噪声线上的任意选择点的第一低阻抗元件和连接在噪声电流驻波的节点处的第二低阻抗元件 线。
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