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1. 发明授权

US4726072A Double converter tuner 失效
标题翻译：双转换调谐器
公开(公告)号：US4726072A
公开(公告)日：1988-02-16
申请号：US004802
申请日：1987-01-09
申请人： Sadahiko Yamashita , Makoto Hasegawa , Motoi Ohba , Tsutomu Shishido , Yasumasa Watanabe
发明人： Sadahiko Yamashita , Makoto Hasegawa , Motoi Ohba , Tsutomu Shishido , Yasumasa Watanabe
IPC分类号： H03B5/12 , H03D7/12 , H03D7/14 , H03D7/16 , H04N7/10 , H04B1/26
CPC分类号： H04N7/10 , H03B5/1203 , H03B5/1231 , H03B5/1243 , H03D7/161 , H03D7/12 , H03D7/125 , H03D7/1408
摘要： Disclosed is a double converter tuner having an input circuit for performing first band control with respect to an input signal, amplifying a band-controlled input signal after automatic gain control is performed, and further performing second band control of a gain-controlled signal, a first IF (intermediate frequency) converter for converting an output generated from the input circuit to a first IF signal having a higher bandwidth than the reception bandwidth of the input signal, a first IF circuit for amplifying an output from the first IF converter, performing third band control and performing a further amplification, a second IF converter for converting an output generated from the first IF circuit to a second IF signal, and a second IF circuit for amplifying an output from the second IF converter, performing fourth band control, and performing another amplification. The first and second IF converters are arranged on different circuit boards to prevent frequency interference therebetween.
摘要翻译：公开了一种双转换器调谐器，其具有用于对输入信号执行第一频带控制的输入电路，在执行自动增益控制之后放大带控输入信号，并进一步执行增益控制信号的第二频带控制，第一IF（中频）转换器，用于将从输入电路产生的输出转换为具有比输入信号的接收带宽更高的带宽的第一IF信号;第一IF电路，用于放大来自第一IF转换器的输出，执行第三IF 频带控制和进一步放大的第二IF转换器，用于将从第一IF电路产生的输出转换为第二IF信号的第二IF转换器，以及用于放大来自第二IF转换器的输出的第二IF电路，执行第四频带控制，以及执行另一个放大。第一和第二IF转换器布置在不同的电路板上以防止它们之间的频率干扰。

2. 发明授权

US4661998A Double superheterodyne tuner 失效
标题翻译：双超外差调谐器
公开(公告)号：US4661998A
公开(公告)日：1987-04-28
申请号：US652678
申请日：1984-09-19
申请人： Sadahiko Yamashita , Makoto Hasegawa , Motoi Ohba , Koh Kikuchi , Tsutomu Shishido
发明人： Sadahiko Yamashita , Makoto Hasegawa , Motoi Ohba , Koh Kikuchi , Tsutomu Shishido
IPC分类号： H03D7/16 , H03D9/06 , H04B1/26 , H04B1/08
CPC分类号： H03D7/161 , H03D9/0658
摘要： A compact or miniaturized well-shielded double superheterodyne tuner is provided, wherein an input circuit portion, a first mixing portion, a first intermediate frequency bandpass filter, a second mixing portion and an output circuit portion are mounted in separated casings. The first mixing portion and the second mixing portion are provided on printed boards and each mounted on a bottom plate of the casing. The casings containing the first and second mixing portion are arranged in a manner such that grounded surfaces of the printed boards contained in the casings are arranged face to face. The casing containing the bandpass filter is contacted adjacently to a common face of the face to face casings. Each of the casings containing the input and output circuit portions is located adjacently to each of faces common to the face to face casings and the filter containing casing. Some structual improvements are also provided for simplifying the manufacture and adjustment of the tuner.
摘要翻译：提供了一种紧凑或小型化的屏蔽良好的超超外差调谐器，其中输入电路部分，第一混合部分，第一中频带通滤波器，第二混合部分和输出电路部分安装在分离的壳体中。第一混合部分和第二混合部分设置在印刷板上，并分别安装在壳体的底板上。包含第一和第二混合部分的壳体被布置成使得包含在壳体中的印刷板的接地表面面对面地布置。包含带通滤光器的外壳与面对面的外壳的共同面相接触。包含输入和输出电路部分的每个壳体位于与面对面和壳体的过滤器共同的每个面附近。还提供了一些结构改进以简化调谐器的制造和调整。

3. 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。

4. 发明授权

US4679003A Frequency divider circuit and frequency synthesizer using the same 失效
标题翻译：分频器电路和频率合成器使用相同
公开(公告)号：US4679003A
公开(公告)日：1987-07-07
申请号：US905262
申请日：1986-09-09
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 , H03L7/04
CPC分类号： H03B19/18
摘要： A wide band analog frequency divider circuit operable at a high frequency in the GHz band, and a frequency synthesizer utilizing the analog frequency divider circuit. 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 of the cathode is grounded. The frequency synthesizer is arranged to frequency divide the output of a VCO by the analog frequency divider circuit, and to supply the frequency-divided output to a prescaler. The output of the prescaler is further frequency divided by a programmable divider, and the phase difference between the output of the programmable divider and a reference signal is detected thereby to control the oscillation frequency of the VCO.
摘要翻译：宽带模拟分频器电路，其工作频率为GHz频带，频率合成器利用模拟分频电路。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，输出从阴极侧输出，或阴极的阳极侧接地。频率合成器被布置成通过模拟分频器电路对VCO的输出进行分频，并将分频输出提供给预分频器。预分频器的输出进一步由可编程分频器分频，并且检测可编程分频器的输出与参考信号之间的相位差，从而控制VCO的振荡频率。

5. 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。

6. 发明授权

US4651344A VHF-UHF mixer having a balun 失效
标题翻译： VHF-UHF混合器具有平衡 - 不平衡变换器
公开(公告)号：US4651344A
公开(公告)日：1987-03-17
申请号：US688644
申请日：1985-01-03
申请人： Makoto Hasegawa , Sadahiko Yamashita
发明人： Makoto Hasegawa , Sadahiko Yamashita
IPC分类号： H04B1/26 , H03D7/14 , H03D9/06
CPC分类号： H03D9/0633 , H03D2200/0023 , H03D2200/0037 , H03D2200/0088 , H03D7/1408
摘要： In a VHF-UHF mixer having a balun formed by conductor patterns placed on a dielectric substrate, a choke coil is interposed between an input junction of the mixer and ground, and the input junction may be divided into two connecting portions which are respectively connected to mixing diodes and a diplexer, where a line having an inductance is interposed between the two connecting portions. The choke coil may be a conductor pattern which is interposed between one of the two connecting portions and ground. The balun comprises parallel coupling lines including first and second coupling lines which may be formed on different sides of a dielectric substrate. The substrate for the balun may be a different one from the substrate of the mixer body.
摘要翻译：在具有由放置在电介质基板上的导体图案形成的平衡 - 不平衡变换器的VHF-UHF混合器中，将扼流线圈插入混合器的输入接点和接地之间，并将输入接点分成两个连接部分混合二极管和双工器，其中具有电感的线插入在两个连接部分之间。扼流线圈可以是插入在两个连接部分中的一个之间并接地的导体图案。平衡 - 不平衡转换器包括并联耦合线，其包括可以形成在电介质基板的不同侧上的第一和第二耦合线。用于平衡 - 不平衡转换器的基板可以是与混合器主体的基板不同的基板。

7. 发明授权

US4720688A Frequency synthesizer 失效
标题翻译：频率合成器
公开(公告)号：US4720688A
公开(公告)日：1988-01-19
申请号：US862945
申请日：1986-05-14
申请人： Makoto Hasegawa , Koei Misaizu , Sadahiko Yamashita
发明人： Makoto Hasegawa , Koei Misaizu , Sadahiko Yamashita
IPC分类号： H03L7/23 , H03L7/06
CPC分类号： H03L7/23
摘要： A microwave frequency synthesizer comprised of a phase-locked loop having a low noise and highly stabilized reference voltage-controlled oscillator and further two phase-locked loops each having a stabilized voltage controlled oscillator, the signal outputs from which are frequency-converted with as small multiplication factors as possible. This frequency synthesizer can minimize the phase noise that may be generated by frequency dividers in a digital system.
摘要翻译：一种微波频率合成器，包括具有低噪声和高度稳定的参考压控振荡器的锁相环，并且还有两个锁相环，每个具有稳定的压控振荡器，其信号输出以小的频率转换乘法因子尽可能。该频率合成器可以将数字系统中的分频器产生的相位噪声最小化。

8. 发明授权

US4536724A Voltage-controlled oscillator having three or more varactor diodes 失效
标题翻译：具有三个或更多变容二极管的压控振荡器
公开(公告)号：US4536724A
公开(公告)日：1985-08-20
申请号：US451838
申请日：1982-12-21
申请人： Makoto Hasegawa , Mitsuo Makimoto , Sadahiko Yamashita , Yoshio Katayama
发明人： Makoto Hasegawa , Mitsuo Makimoto , Sadahiko Yamashita , Yoshio Katayama
IPC分类号： H03B5/12 , H03J3/18 , H05K1/18 , H03B5/08
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。

9. 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。

10. 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。

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