-
公开(公告)号：US4449108A
公开(公告)日：1984-05-15
申请号：US348768
申请日：1982-02-16
CPC分类号： H01P1/202
摘要： A band-stop filter for VHF-UHF band comprises at least three series resonance circuits and at least two transmission lines each connected between the series resonance circuits. One of the transmission lines, which is connected to the input terminal of the band-stop filter, has an electrical length which is shorter or longer than the quarter wavelength of the center frequency of the stop band by more than 20 but less than 50 percent. When a band-stop filter comprises four transmission lines, one of the transmission lines, which is connected to the output terminal of the band-stop filter, has the same length as the transmission line connected to the input terminal. With this arrangement, the band-stop filter exhibits a sharp attenuation characteristic in a frequency range below or above the center frequency. Other transmission lines, which are not directly connected to either the input terminal or the output terminal, may have a length which is shorter or longer than the quarter wavelength by 5 to 20 percent so as to provide a sharper attenuation characteristic.
摘要翻译： 用于VHF-UHF频带的带阻滤波器包括至少三个串联谐振电路和至少两个连接在串联谐振电路之间的传输线。 连接到带阻滤波器的输入端子的传输线之一具有比阻带的中心频率的四分之一波长短或长的电长度大于20但小于50％的电长度 。 当带阻滤波器包括四条传输线时，连接到带阻滤波器的输出端的传输线之一具有与连接到输入端的传输线相同的长度。 通过这种布置，带阻滤波器在低于或高于中心频率的频率范围内表现出明显的衰减特性。 不直接连接到输入端子或输出端子的其它传输线路可以具有比四分之一波长短或长于5％至20％的长度，以便提供更清晰的衰减特性。
-
2.发明授权Coaxial filter having a plurality of resonators each having a bottomed cylinder 失效同轴滤波器具有多个谐振器，每个谐振器都具有有底圆筒
公开(公告)号：US4437076A
公开(公告)日：1984-03-13
申请号：US348766
申请日：1982-02-16
CPC分类号： H01P1/2053
摘要： In a coaxial filter arrangement having a plurality of coaxial resonators each having a bottomed metallic cylinder interposed between a dielectric plate and one end of a center conductor of each resonator, the peripheral wall portion of the metallic cylinder is received in the bore of an outer conductor having an open end and a closed end connected to the other end of the center conductor. In one embodiment, the bottom of the metallic cylinder has a convex portion at its center so that the bottom center projects outwardly. In another embodiment, an annular metallic member is interposed between the dielectric plate and the outer surface of the flat bottom of the metallic cylinder. Since the distance between bottoms of metallic cylinders of adjacent resonators is made large with this arrangement, influence due to leakage flux of electromagnetic field is small, while stray capacitance is negligibly small, thereby providing a filter having high performance and low loss.
摘要翻译： 在具有多个同轴谐振器的同轴滤波器装置中，每个同轴谐振器具有插入介电板和每个谐振器的中心导体的一端之间的有底金属圆柱体，金属圆筒的周壁部分容纳在外导体的孔中 具有连接到中心导体的另一端的开口端和封闭端。 在一个实施例中，金属圆筒的底部在其中心处具有凸起部分，使得底部中心向外突出。 在另一个实施例中，环形金属构件介于电介质板和金属圆筒的平底部的外表面之间。 由于这种布置使相邻谐振器的金属圆筒的底部之间的距离变大，所以由于电磁场的漏磁通引起的影响小，而杂散电容变小，从而提供具有高性能和低损耗的滤波器。
-
3.发明授权
公开(公告)号：US4631506A
公开(公告)日：1986-12-23
申请号：US514262
申请日：1983-07-15
IPC分类号： H01P7/04
CPC分类号： H01P7/04
摘要： A coaxial dielectric resonator for VHF and/or UHF band comprising a generally cylindrical dielectric having inner surface and outer surface. The inner and outer surfaces of the dielectric are respectively covered by outer and inner conductors and these conductors are connected at one end of the dielectric. An adjusting screw for adjusting resonance frequency is provided at the other end of the dielectric which is covered by a lid while holding a gap between the adjusting screw and the lid. A microwave filter using a plurality of the coaxial dielectric resonator is further described.
摘要翻译： 一种用于VHF和/或UHF带的同轴介质谐振器，包括具有内表面和外表面的大致圆柱形电介质。 电介质的内表面和外表面分别由外导体和内导体覆盖，并且这些导体在电介质的一端连接。 在保持调节螺钉和盖子之间的间隙的情况下，在由盖子覆盖的电介质的另一端设置有用于调节共振频率的调节螺钉。 进一步描述使用多个同轴介质谐振器的微波滤波器。
-
公开(公告)号：US4638180A
公开(公告)日：1987-01-20
申请号：US709288
申请日：1985-03-07
CPC分类号： H03B19/18
摘要： A wide band analog frequency divider circuit operable at a high frequency in the GHz band. The analog frequency divider circuit comprises an LC series circuit having a capacitor and an inductor connected between the anode and the cathode of a diode, and means for applying a forward bias to the diode. The input signal is supplied from the anode side of the diode, and the output is delivered from the cathode side, or the anode side if the cathode is grounded.
摘要翻译： 宽带模拟分频器电路可在GHz频段的高频工作。 模拟分频器电路包括具有连接在二极管的阳极和阴极之间的电容器和电感器的LC串联电路，以及用于向二极管施加正向偏压的装置。 输入信号从二极管的阳极侧提供，如果阴极接地，则从阴极侧或阳极侧输出输出信号。
-
公开(公告)号：US4583064A
公开(公告)日：1986-04-15
申请号：US646430
申请日：1984-08-31
IPC分类号： H01P7/08
CPC分类号： H01P7/084
摘要： A strip-line resonator comprises a first dielectric substrate having a conductive film on one surface thereof for connection to ground and a strip line on the other surface thereof and a second dielectric substrate having one surface thereof making contact with the strip line and a conductive film on the other surface thereof for connection to ground. Fused glass having a low melting point for is applied between the first and second substrates to bond them together. A portion of open-circuit end of the strip line is exposed and formed with slits or gap to facilitate frequency adjustment.
摘要翻译： 带状线谐振器包括在其一个表面上具有用于连接到地的导电膜和在其另一个表面上的带状线的第一电介质基片和具有与带状线接触的一个表面的第二电介质基片和导电膜 在另一个表面上连接到地面。 在第一和第二基板之间施加具有低熔点的熔融玻璃以将它们结合在一起。 带状线的开路端的一部分被暴露并形成有狭缝或间隙以便于频率调节。
-
公开(公告)号：US4536724A
公开(公告)日：1985-08-20
申请号：US451838
申请日：1982-12-21
CPC分类号： H03J3/185 , H05K1/18 , H05K2201/1003 , H05K2201/10174 , H05K2201/1053
摘要： In a voltage-controlled oscillator having an LC resonant circuit including a varactor circuit so that resonant frequency is controlled by a D.C. bias or control voltage applied to the varactor circuit, three or more varactors are connected in series in one embodiment so that a high-frequency voltage applied to the varactor circuit is divided into a plurality. The varactors may be connected in the same direction or opposite direction. In another embodiment, a plurality of series circuits of varactors are connected in parallel to provide the varactor circuit, where each series circuit comprises two or more varactors. A series-parallel connection of a plurality of varactors may be arranged in a matrix. In order to reduce undesirable stray capacitance, some or all varactors are attached to a printed circuit board so that they are normal to the plane of the printed circuit board. In one embodiment an auxiliary printed circuit board is employed so that some varactors are spaced from a main circuit board. The voltage-controlled oscillator of the invention shows high carrier-to-noise ratio throughout a wide frequency range.
摘要翻译： 在具有包括变容二极管电路的LC谐振电路的压控振荡器中，使得谐振频率由施加到变容二极管电路的DC偏压或控制电压控制，在一个实施例中，三个或更多个可变电抗器串联连接， 施加到变容二极管电路的频率电压被分成多个。 变容二极管可以沿相同的方向或相反的方向连接。 在另一个实施例中，并联连接多个串联的变容二极管串联电路以提供变容二极管电路，其中每个串联电路包括两个或多个变容二极管。 多个变容二极管的串联并联连接可以以矩阵形式布置。 为了减少不期望的杂散电容，一些或全部变压器连接到印刷电路板，使得它们垂直于印刷电路板的平面。 在一个实施例中，采用辅助印刷电路板，使得一些变容二极管与主电路板间隔开。 本发明的压控振荡器在宽的频率范围内显示出高的载波噪声比。
-
公开(公告)号：US4361820A
公开(公告)日：1982-11-30
申请号：US197331
申请日：1980-10-15
摘要： A coaxial type microwave filter having an outer conductor and at least one inner conductor supported in the outer conductor has a strip transmission line extending from an external strip-line circuit to the inner conductor through an opening in the outer conductor. The strip transmission line includes a dielectric member forming an integral part of the dielectric substrate of the external circuit and a thin layer of conductive strip also forming an integral part of the conductive film pattern of the external circuit. The extending strip transmission line is electromagnetically coupled with the inner connector to permit the two microwave circuits to be interconnected with no use of a connector.
摘要翻译： 具有外部导体和至少一个支撑在外部导体中的内部导体的同轴型微波滤波器具有通过外部导体中的开口从外部带状线电路延伸到内部导体的带状传输线。 带状传输线包括形成外部电路的电介质基板的一体部分的电介质构件和也形成外部电路的导电膜图案的整体部分的导电条的薄层。 延长条传输线与内连接器电磁耦合，以允许两个微波电路互连而不使用连接器。
-
公开(公告)号：US4254390A
公开(公告)日：1981-03-03
申请号：US15602
申请日：1979-02-27
摘要： A tuning device including a conductive housing in which are suspended a dielectric substrate. A pair of first and second resonant circuits is disposed on the substrate in parallel with each other. Each resonant circuit is formed by an elongated conductive film and a capacitive element. A grounded conductive strip film is provided between the transmission lines of the first and second resonant circuits to reduce the interstage coupling between the two transmission lines with a resultant decrease in spacing between them.
摘要翻译： 一种调谐装置，包括导电壳体，悬置电介质基片。 一对第一和第二谐振电路彼此平行地设置在基板上。 每个谐振电路由细长的导电膜和电容元件形成。 在第一和第二谐振电路的传输线之间设置接地导电条膜，以减少两条传输线之间的级间耦合，从而减小它们之间的间距。
-
公开(公告)号：US4224587A
公开(公告)日：1980-09-23
申请号：US958499
申请日：1978-11-07
摘要： A comb-line bandpass filter comprising an enclosure or outer conductor and a plurality of inner conductors arranged parallel in the outer conductor. Adjacent to one end of each inner conductor a body of dielectric material is attached to provide a larger diameter, lumped capacitance section while providing a lumped inductance section in the remainder of the inner conductor. A conductive layer, conductively coupled to the outer conductor, encircles the dielectric body to act as a shield between adjacent inner conductors so that the coupling between them is concentrated in the inductive section. Overall size of the comb-line filter is reduced by reduction both in axial length of the inner conductors and the spacing between them.
摘要翻译： 梳状带通滤波器包括外壳或外导体以及平行于外导体布置的多个内导体。 在每个内部导体的一端附近，电介质材料体连接以提供更大直径的集总电容部分，同时在内部导体的其余部分中提供集总电感部分。 导电耦合到外部导体的导电层环绕电介质体以作为相邻内部导体之间的屏蔽，使得它们之间的耦合集中在电感部分中。 通过减小内部导体的轴向长度和它们之间的间距来减小梳状滤波器的总体尺寸。
-
公开(公告)号：US4214218A
公开(公告)日：1980-07-22
申请号：US15601
申请日：1979-02-27
CPC分类号： H03J3/185 , H03D7/18 , H03D9/0625
摘要： A tuning device including a conductive housing in which is suspended a dielectric substrate. A pair of first and second resonant circuits is disposed on the substrate in parallel with each other. Each resonant circuit is formed by an elongated conductive film and a capacitive element. An image frequency trapping circuit is arranged to intersect one of the transmission lines to absorb the signal at the image frequency. A grounded conductive strip film is provided adjacent to and parallel with each of the transmission lines and so spaced therefrom that the characteristic impedances of the transmission lines are made equal to each other.
摘要翻译： 一种调谐装置，包括导电壳体，悬置电介质基片。 一对第一和第二谐振电路彼此平行地设置在基板上。 每个谐振电路由细长的导电膜和电容元件形成。 图像频率捕获电路布置成与传输线之一相交以吸收图像频率处的信号。 接地导电条膜邻近并与每条传输线平行设置，并与之隔开，使得传输线的特征阻抗彼此相等。
-
-
-
-
-
-
-
-
-
搜索结果
69 条记录 (耗时 0.021 秒)