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1. 发明授权

US4506241A Coaxial dielectric resonator having different impedance portions and method of manufacturing the same 失效
标题翻译：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
申请人： Mitsuo Makimoto , Yukichi Aihara , Sadahiko Yamashita
发明人： Mitsuo Makimoto , Yukichi Aihara , Sadahiko Yamashita
IPC分类号： H01P1/202 , H01P1/212 , H01P7/04 , H01P7/10
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。

2. 发明授权

US4389624A Dielectric-loaded coaxial resonator with a metal plate for wide frequency adjustments 失效
标题翻译：具有金属板的介电负载同轴谐振器用于宽频率调节
公开(公告)号：US4389624A
公开(公告)日：1983-06-21
申请号：US251967
申请日：1981-04-03
申请人： Yukichi Aihara , Sadahiko Yamashita
发明人： Yukichi Aihara , Sadahiko Yamashita
IPC分类号： H01P1/202 , H01P7/04
CPC分类号： H01P7/04
摘要： A coaxial resonator comprising an outer conductor with closed and open ends, an inner conductor concentrically disposed in the outer conductor to establish a short circuit at the closed end and an open circuit at the open end, and a dielectric member mounted in the open circuit between the outer and inner conductors. An electrode is connected to the open circuit end of the inner conductor with a spacing from the dielectric member. A conductive plate, having a smaller surface area than that of the electrode but larger than the transverse cross-sectional area of the inner conductor, is provided between the dielectric member and the electrode. The dimensions of the conductive plate is appropriately chosen to accommodate frequency variations which might occur as a result of a connection with an external circuit.
摘要翻译：一种同轴谐振器，包括具有闭合和开放端的外部导体，同心地设置在外部导体中的内部导体，以在封闭端处建立短路，并在开口端形成开路;以及电介质构件，其安装在开路之间外导体和内导体。电极与内部导体的开路端连接，与电介质构件间隔开。在电介质构件和电极之间设置导电板，其表面面积小于电极的表面积，但大于内导体的横截面积。适当地选择导电板的尺寸以适应由于与外部电路的连接而可能发生的频率变化。

3. 发明授权

US4437076A Coaxial filter having a plurality of resonators each having a bottomed cylinder 失效
标题翻译：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
申请人： Mitsuo Makimoto , Haruyoshi Endo , Ko Kikuchi , Sadahiko Yamashita
发明人： Mitsuo Makimoto , Haruyoshi Endo , Ko Kikuchi , Sadahiko Yamashita
IPC分类号： H01P1/202 , H01P1/205 , H01P7/04
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。

4. 发明授权

US4315333A Circuit arrangement for a wide-band VHF-UHF television double superheterodyne receiver 失效
标题翻译：宽带VHF-UHF电视双超外差接收机的电路布置
公开(公告)号：US4315333A
公开(公告)日：1982-02-09
申请号：US143809
申请日：1980-04-23
申请人： Sadahiko Yamashita , Hiroshi Onishi , Mitsuo Saito , Morikazu Sagawa
发明人： Sadahiko Yamashita , Hiroshi Onishi , Mitsuo Saito , Morikazu Sagawa
IPC分类号： H03D7/16 , H04B1/26
CPC分类号： H04B1/0092 , H03D7/161 , H04B1/26
摘要： The signal transmission lines in a double conversion stage for a double superheterodyne VHF-UHF television receiver are mainly constructed of unbalanced circuits rather than balanced circuits. The circuit arrangement comprises a wide-band amplifier for receiving the incoming carrier frequency, first and second frequency conversion stages, and an intermediate frequency amplifying stage, connections between the wide-band amplifier and the first frequency conversion stage, as well as connections between the second frequency conversion stage and the intermediate frequency amplifying stage are achieved by means of unbalanced circuits. Each of the first and second frequency conversion stages comprises a mixer constructed of a single balanced circuit, a local oscillator and an unbalanced/balanced conversion circuit interposed therebetween. A filter means, having a band-pass filter, and a low-pass filter interposed between the first and second frequency conversion stages effectively blocks spurious signals.
摘要翻译：用于双超外差VHF-UHF电视接收机的双转换级中的信号传输线主要由不平衡电路而不是平衡电路构成。该电路装置包括宽带放大器，用于接收进入的载波频率，第一和第二频率转换级以及中频放大级，宽带放大器与第一变频级之间的连接，以及第二变频级和中频放大级通过不平衡电路实现。第一和第二变频级中的每一个包括由单个平衡电路，本地振荡器和插入其间的不平衡/平衡转换电路构成的混频器。具有带通滤波器的滤波器装置和插在第一和第二频率转换级之间的低通滤波器有效地阻止杂散信号。

5. 发明授权

US4638180A Frequency divider circuits 失效
标题翻译：分频器电路
公开(公告)号：US4638180A
公开(公告)日：1987-01-20
申请号：US709288
申请日：1985-03-07
申请人： Morikazu Sagawa , Yoshikazu Mori , Motoi Ohba , Mitsuo Makimoto , Sadahiko Yamashita
发明人： Morikazu Sagawa , Yoshikazu Mori , Motoi Ohba , Mitsuo Makimoto , Sadahiko Yamashita
IPC分类号： H03B19/18 , H03B19/00
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。

6. 发明授权

US4592095A Microwave FET mixer arranged to receive RF input at gate electrode 失效
标题翻译：微波FET混频器布置成在栅电极处接收RF输入
公开(公告)号：US4592095A
公开(公告)日：1986-05-27
申请号：US594684
申请日：1984-03-26
申请人： Hiroshi Ohnishi , Sadahiko Yamashita
发明人： Hiroshi Ohnishi , Sadahiko Yamashita
IPC分类号： H04B1/06 , H03D7/12 , H03D9/06 , H04B1/26
CPC分类号： H03D9/0675 , H03D2200/0027 , H03D7/125
摘要： In a GaAs FET microwave mixer, a gate of the FET is used to receive a radio frequency input signal, while a source of the same is used to inject a local oscillator signal therethrough so as to develop an intermediate frequency signal at a drain of the FET. The mixer of the invention comprises, in addition to such an FET, first and second particular circuits respectively connected to the source, where the first circuit is arranged to exhibit a short-circuited impedance at a frequency band of the radio frequency input signal, and the second circuit is arranged to exhibit an open-circuited impedance at a frequency band of the local oscillator signal. The first and second circuits may be actualized by distributed constant circuits, such as stubs, or by lumped constant circuits, such as resonance circuits.
摘要翻译：在GaAs FET微波混频器中，FET的栅极用于接收射频输入信号，而其源极用于通过其注入本地振荡器信号，以便在该漏极处产生中频信号 FET。除了这种FET之外，本发明的混频器还包括分别连接到源的第一和第二特定电路，其中第一电路布置成在射频输入信号的频带处呈现短路阻抗，以及第二电路被布置成在本地振荡器信号的频带处呈现开路的阻抗。第一和第二电路可以由诸如短线的分布常数电路或诸如谐振电路的集总常数电路来实现。

7. 发明授权

US4583064A Strip-line resonator 失效
标题翻译：带状线谐振器
公开(公告)号：US4583064A
公开(公告)日：1986-04-15
申请号：US646430
申请日：1984-08-31
申请人： Mitsuo Makimoto , Morikazu Sagawa , Sadahiko Yamashita , Yoshihiko Takayama
发明人： Mitsuo Makimoto , Morikazu Sagawa , Sadahiko Yamashita , Yoshihiko Takayama
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。

8. 发明授权

US4553264A Double superheterodyne tuner 失效
标题翻译：双超外差调谐器
公开(公告)号：US4553264A
公开(公告)日：1985-11-12
申请号：US533810
申请日：1983-09-19
申请人： Makoto Hasegawa , Hiroshi Ohnishi , Sadahiko Yamashita
发明人： Makoto Hasegawa , Hiroshi Ohnishi , Sadahiko Yamashita
IPC分类号： H03D7/16 , H03D7/18 , H04B1/26
CPC分类号： H03D7/161 , H03D7/18
摘要： In a double superheterodyne tuner, the first local oscillator frequency is set to a value higher than the first intermediate frequency, which is set to a value between three and five times the upper limit of the receiving frequency range. With this arrangement spurious signals of at least third or less order can be prevented from occuring in the first intermediate frequency range. The tuner comprises an input filter which attenuates interference signals whose harmonics equal a desired frequency. The second intermediate frequency may be selected such that it is obtained by subtracting the second local oscillator frequency from the first intermediate frequency which is higher than the second local oscillator frequency. As a bandpass filter for passing the first intermediate frequency may be used a coaxial dielectric filter so as to reduce interferences by undesired channel signals.
摘要翻译：在双重超外差调谐器中，第一本地振荡器频率被设置为高于接收频率范围的上限的三到五倍之间的值的第一中频的值。通过这种布置，可以防止发生在第一中间频率范围内的至少三分之一或更小的寄生信号。该调谐器包括输入滤波器，其衰减谐波等于期望频率的干扰信号。可以选择第二中频，使得通过从高于第二本机振荡器频率的第一中频减去第二本地振荡器频率来获得第二中频。作为用于通过第一中频的带通滤波器可以使用同轴介质滤波器，以便减少不期望的信道信号的干扰。

9. 发明授权

US4449108A Band-stop filter for VHF-UHF band 失效
标题翻译： VHF-UHF频段的带通滤波器
公开(公告)号：US4449108A
公开(公告)日：1984-05-15
申请号：US348768
申请日：1982-02-16
申请人： Haruyoshi Endo , Mitsuo Makimoto , Ko Kikuchi , Sadahiko Yamashita
发明人： Haruyoshi Endo , Mitsuo Makimoto , Ko Kikuchi , Sadahiko Yamashita
IPC分类号： H01P1/213 , H01P1/20 , H01P1/202 , H03H7/01 , H03H7/46 , H01P7/04
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。

10. 发明授权

US4214217A Electronic tuning circuit having image trapping element 失效
标题翻译：具有图像捕获元件的电子调谐电路
公开(公告)号：US4214217A
公开(公告)日：1980-07-22
申请号：US12216
申请日：1979-02-14
申请人： Mitsuo Saito , Sadahiko Yamashita
发明人： Mitsuo Saito , Sadahiko Yamashita
IPC分类号： H01P1/203 , H01P7/08 , H03D7/18 , H03J3/18 , H03J5/00 , H04B1/10 , H03J3/00
CPC分类号： H01P1/20336 , H03D7/18 , H03J3/185
摘要： A tuning circuit comprises a pair of identical resonant circuits each including a transmission line and a capacitive element, a coupling circuit associated with each transmission line to inject microwave energy into the resonant circuits and extract the tuned energy therefrom. An image trapping circuit is included which comprises a first section which intersects one of the transmission lines and connected to the coupling circuit associated with the intersected transmission line and a second section which extends from the point of connection of the first section with that coupling element to the opposite transmission line in a direction skewed relative to each transmission line. The second section of the image trap circuit provides a smooth interstage coupling between the two transmission lines over a range of resonant frequencies.
摘要翻译：调谐电路包括一对相同的谐振电路，每个谐振电路各自包括传输线和电容元件，耦合电路与每条传输线相关联，以将微波能量注入到谐振电路中并从中提取调谐能量。包括图像捕获电路，其包括与传输线之一相交并连接到与交叉传输线相关联的耦合电路的第一部分和从第一部分与该耦合元件的连接点延伸到第二部分的第二部分相反的传输线在相对于每个传输线倾斜的方向上。图像陷波电路的第二部分在谐振频率的范围内提供两条传输线之间的平滑的级间耦合。

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