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1.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。
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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。
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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。
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4.发明授权Coaxial dielectric resonator having different impedance portions and method of manufacturing the same 失效具有不同阻抗部分的同轴介质谐振器及其制造方法
公开(公告)号：US4506241A
公开(公告)日：1985-03-19
申请号：US445837
申请日：1982-11-30
CPC分类号： H01P1/202 , H01P7/04 , Y10T29/49016
摘要： A coaxial dielectric resonator for VHF-UHF band comprises a generally cylindrical dielectric body having a thick portion, a thin portion and a stepped portion interposed between the thick and thin portion. The outer and inner surfaces of the dielectric body are respectively covered by outer and inner conductors. Thus the resonator can be regarded as a series circuit of two lines having different impedance from each other. The axial length of the thick and thin portions may be changed so as to change electrical characteristics. With the provision of thick and thin dielectric portions, the spurious resonance frequencies may be set to values other than integral multiples of the fundamental resonance frequency. The stepped portion may be rounded or replaced with a tapered portion so that impedance gradually changes at the stepped or tapered portion from the thick portion to the thin portion or vice versa.
摘要翻译： 用于VHF-UHF带的同轴电介质谐振器包括具有厚部分，薄部分和介于厚部分和薄部分之间的阶梯部分的大致圆柱形电介质体。 绝缘体的外表面和内表面分别由外导体和内导体覆盖。 因此，谐振器可以被认为是具有彼此具有不同阻抗的两条线路的串联电路。 可以改变厚薄部分的轴向长度以改变电特性。 通过提供厚而薄的电介质部分，寄生谐振频率可以被设置为不同于基本共振频率的整数倍的值。 台阶部分可以是圆形的或被锥形部分替代，使得阻挡物从阶梯形或锥形部分从厚部分逐渐变化到薄部分，反之亦然。
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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。
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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。
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7.发明授权Transistor oscillator with compensating circuit for variable collector-base capacitance 失效晶体管振荡器，具有可变集电极 - 基极电容的补偿电路
公开(公告)号：US4590443A
公开(公告)日：1986-05-20
申请号：US709717
申请日：1985-03-08
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/1243 , H03B5/1296 , H03B2200/0008 , H03B2200/001 , H03B2200/004 , H03B2200/0042 , H03B2200/0088 , H03B2201/0208 , H03B2202/012
摘要： A low noise oscillator is disclosed wherein the collector and base of a transistor are respectively biased at different voltages from a common voltage source to be conditioned for generating a high frequency oscillation with a resonant circuit connected to the emitter and collector. The high frequency oscillation developed at the base of the transistor is coupled to ground. A capacitive circuit is coupled between the collector and base of the transistor to eliminate the effect of a voltage-dependent capacitance inherently present in the transistor between its collector and base on the frequency of the oscillation in order to reduce the level of noise introduced to sidebands.
摘要翻译： 公开了一种低噪声振荡器，其中晶体管的集电极和基极分别被偏置在与要被调节的公共电压源不同的电压上，用于通过连接到发射极和集电极的谐振电路产生高频振荡。 在晶体管的基极处产生的高频振荡耦合到地。 电容电路耦合在晶体管的集电极和基极之间，以消除在集电极和基极之间固有存在于其集电极和基极之间的电压相关电容对振荡频率的影响，以便降低引入到边带的噪声电平 。
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公开(公告)号：US4423396A
公开(公告)日：1983-12-27
申请号：US306855
申请日：1981-09-29
CPC分类号： H01P1/20363 , H03H7/0123 , H03H7/1708 , H03H7/1775
摘要： In a bandpass filter having five or more resonator stages, a sub transmission line is coupled to the main transmission line at the first and fourth resonators. The first to fourth resonators provide peak attenuation points at both sides of the center frequency in the attenuation curve, while the remaining resonators following the fourth resonator further sharpen the attenuation characteristics of the bandpass filter. The main and sub transmission lines may be formed by striplines on a printed circuit board, while the sub transmission line can be capacity coupled to the main transmission line. Coupling capacitances are freely set by setting the length of each gap between adjacent striplines to a desired value. Thus, the peak attenuation points can be accurately controlled to provide a bandpass filter having superior characteristics.
摘要翻译： 在具有五个或更多个谐振器级的带通滤波器中，在第一和第四谐振器处将副传输线耦合到主传输线。 第一至第四谐振器在衰减曲线中的中心频率的两侧提供峰值衰减点，而在第四谐振器之后的剩余谐振器进一步削弱带通滤波器的衰减特性。 主传输线和副传输线可以由印刷电路板上的带状线形成，而副传输线可以电容耦合到主传输线。 通过将相邻带状线之间的每个间隙的长度设置为所需值，可以自由设置耦合电容。 因此，可以精确地控制峰值衰减点，以提供具有优异特性的带通滤波器。
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公开(公告)号：US4412351A
公开(公告)日：1983-10-25
申请号：US314501
申请日：1981-10-23
CPC分类号： H03D7/02 , H03D9/0633 , H03D2200/0037
摘要： A microwave mixing circuit comprises a main transmission line having an input port for receiving an input high frequency and an output port, a band pass filter responsive to a local oscillation frequency, first and second band stop filters, and a mixing diode connected to the output port. The local oscillation frequency applied via the band pass filter to the main transmission line is prevented from being transmitted toward the input port because of the first band stop filter, while an image frequency produced by the diode is reflected by the second band stop filter to be applied to the diode.
摘要翻译： 微波混合电路包括主传输线，其具有用于接收输入高频的输入端口和输出端口，响应于本地振荡频率的带通滤波器，第一和第二带阻滤波器以及连接到输出端的混合二极管 港口。 通过带通滤波器施加到主传输线的本地振荡频率由于第一带阻滤波器而被阻止向输入端传输，而由二极管产生的图像频率被第二带阻滤波器反射为 施加到二极管。
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公开(公告)号：US4371853A
公开(公告)日：1983-02-01
申请号：US201541
申请日：1980-10-29
CPC分类号： H01P1/20363 , H01P1/20381 , H01P1/212 , H01P7/084
摘要： The width of a strip-line conductor in a TEM mode resonator is made wider at the center portion thereof, at which current is maximum, then the open-ended widths at both end portions of the conductor so that impedance of the center portion is lower than the impedances of both end portions. The impedance may be stepwisely or continuously varied, and spurious resonance frequencies may be determined by the impedance ratio between the higher and lower impedances. Such a resonator may be included in a band pass filter in such a manner that the band pass filter comprises at least one resonator whose spurious resonance frequencies differ from those of remaining resonators.
摘要翻译： TEM模式谐振器中的带状导体的宽度在电流最大的中心部分处变宽，然后在导体的两端部处的开口端宽度使得中心部分的阻抗较低 比两端部的阻抗大。 阻抗可以逐步地或连续地变化，并且寄生谐振频率可以由较高和较低阻抗之间的阻抗比确定。 这样的谐振器可以包括在带通滤波器中，使得带通滤波器包括至少一个谐振器，其共振频率与剩余谐振器的谐振频率不同。
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