公开(公告)号：US5446762A

公开(公告)日：1995-08-29

申请号：US572594

申请日：1990-08-27

申请人： Motoi Ohba ,  Makoto Hasegawa ,  Mitsuo Makimoto

发明人： Motoi Ohba ,  Makoto Hasegawa ,  Mitsuo Makimoto

IPC分类号： H04L27/14 ,  H04L27/152 ,  H03D3/18

CPC分类号： H04L27/1525

摘要： An FSK radio receiver of direct conversion type, which derives baseband in-phase and phase quadrature signals from a received FSK RF signal in respective mixers by applying local oscillator signals to the mixers differing in phase by 90.degree., in which wide-band baseband 90.degree. phase shifting circuits formed of only digital logic elements phase shift the in-phase and phase quadrature signals to enable a demodulated digital data signal to be obtained by subsequent digital processing. In that processing, signals having a frequency that is double that of the in-phase and phase quadrature signals are derived and used to derive the demodulated data signal, ensuring high accuracy of detection and lowering the accuracy required for the local oscillator frequency.

摘要翻译： 一种直接转换型的FSK无线电接收机，通过将本地振荡器信号施加到相位相差90°的混频器，从而在相应的混频器中从接收的FSK RF信号中获得基带同相和相位正交信号，其中宽带基带90 仅由数字逻辑元件形成的DEG移相电路将同相和相位正交信号相移，使得能够通过后续的数字处理获得解调的数字数据信号。 在该处理中，导出具有同相和相位正交信号的两倍的频率的信号，并且用于导出解调的数据信号，确保检测的高精度并降低本地振荡器频率所需的精度。

公开(公告)号：US4749963A

公开(公告)日：1988-06-07

申请号：US940114

申请日：1986-12-09

申请人： Mitsuo Makimoto ,  Isao Ishigaki ,  Morikazu Sagawa ,  Motoi Ohba

发明人： Mitsuo Makimoto ,  Isao Ishigaki ,  Morikazu Sagawa ,  Motoi Ohba

IPC分类号： H03B5/12 ,  H03B5/18 ,  H03B7/14

CPC分类号： H03B5/1847 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2200/0016 ,  H03B2200/0088 ,  H03B7/14

摘要： A high frequency oscillator comprising a ring type inductive resonator of a microstrip line constituted in a rectangular or annular loop. Capacitors are serially connected to both ends of the line, thereby improving the low-noise, separation and stability characteristics by use of the steep-phase characteristic of the ring-shaped resonator.

摘要翻译： 一种高频振荡器，包括由矩形或环形环构成的微带线的环型感应谐振器。 电容器串联连接到线路的两端，从而通过使用环形谐振器的陡相特性来改善低噪声，分离和稳定特性。

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。

公开(公告)号：US5008629A

公开(公告)日：1991-04-16

申请号：US369408

申请日：1989-06-20

申请人： Motoi Ohba ,  Hiroyuki Yabuki ,  Mitsuo Makimoto

发明人： Motoi Ohba ,  Hiroyuki Yabuki ,  Mitsuo Makimoto

IPC分类号： H03L7/089 ,  H03L7/14 ,  H03L7/199

CPC分类号： H03L7/0805 ,  H03L7/0891 ,  H03L7/14 ,  H03L7/199 ,  H03L2207/18

摘要： A frequency synthesizer for use in a high-frequency multichannel radio apparatus and so on. More particularly, a phase-locked loop (PLL) type frequency synthesizer which can perform a pulling process at high speed. Namely, a frequency synthesizer of the present invention can effect a pulling process at high speed by putting input signals to a phase comparator into a state in which the input signals are in phase with each other in an intermittent operation mode and can have strong resistance to noises by providing a 1-bit data latch and gate circuits in a data inputting portion thereof and synthesizing strobe signals at the time of inputting data thereto.

摘要翻译： 一种用于高频多声道无线电设备等的频率合成器。 更具体地，可以高速执行拉动处理的锁相环（PLL）型频率合成器。 也就是说，本发明的频率合成器可以通过将相位比较器的输入信号输入到间歇运转模式中的输入信号彼此相位的状态下，高速地进行拉动处理，并且可以具有很强的抵抗力 通过在其数据输入部分中提供1位数据锁存器和门电路并在输入数据时合成选通信号来产生噪声。

公开(公告)号：US4841255A

公开(公告)日：1989-06-20

申请号：US210456

申请日：1988-06-23

申请人： Motoi Ohba ,  Mitsuo Makimoto

发明人： Motoi Ohba ,  Mitsuo Makimoto

IPC分类号： H03L7/187 ,  H03L7/08 ,  H03L7/087 ,  H03L7/14 ,  H03L7/183

CPC分类号： H03L7/0802 ,  H03L7/087 ,  H03L7/14 ,  H03L7/183 ,  H03L2207/18

摘要： A first oscillator outputs a signal having a reference frequency. A first frequency divider divides the frequency of the output signal from the first oscillator. A second oscillator outputs a signal having a target frequency. A second frequency divider divides the frequency of the output signal from the second oscillator. A phase comparator compares phases of output signals from the first and second frequency dividers. An integrator integrates an output signal from the phase comparator and controls the second oscillator in accordance with the integration of the output signal from the phase comparator. A first gate is connected between the first oscillator and the first frequency divider. A second gate is connected between the second oscillator and the second frequency divider. A third gate is connected between the phase comparator and the integrator. The first gate, the second gate, and the third gate are controlled in accordance with the output signals from the first and second frequency dividers and with an external synthesizer control signal.

摘要翻译： 第一振荡器输出具有参考频率的信号。 第一分频器分频来自第一振荡器的输出信号的频率。 第二振荡器输出具有目标频率的信号。 第二分频器分频来自第二振荡器的输出信号的频率。 相位比较器比较来自第一和第二分频器的输出信号的相位。 积分器集成来自相位比较器的输出信号，并根据来自相位比较器的输出信号的积分来控制第二振荡器。 第一门连接在第一振荡器和第一分频器之间。 第二栅极连接在第二振荡器和第二分频器之间。 第三个栅极连接在相位比较器和积分器之间。 根据来自第一和第二分频器的输出信号和外部合成器控制信号来控制第一门，第二门和第三门。

公开(公告)号：US5081650A

公开(公告)日：1992-01-14

申请号：US543490

申请日：1990-06-26

申请人： Makoto Hasegawa ,  Motoi Ohba ,  Mitsuo Makimoto

发明人： Makoto Hasegawa ,  Motoi Ohba ,  Mitsuo Makimoto

IPC分类号： H04L27/152

CPC分类号： H04L27/1525

摘要： A data receiver includes first and second mixers mixing an input RF signal and a local oscillator signal and generating first and second quadrature baseband-frequency output signals. A phase shifter shifts a phase of the first baseband-frequency output signal by 90 degrees. A third mixer mixes an output signal from the phase shifter and the first baseband-frequency output signal. A fourth mixer mixes the first and second baseband-frequency output signals. A demodulator performs data demodulation by use of output signals from the third and fourth mixers.

公开(公告)号：US4812791A

公开(公告)日：1989-03-14

申请号：US16086

申请日：1987-02-18

申请人： Mitsuo Makimoto ,  Motoi Ohba

发明人： Mitsuo Makimoto ,  Motoi Ohba

IPC分类号： H01P7/08 ,  H01P7/10 ,  H01P7/00

CPC分类号： H01P7/082 ,  H01P7/10

摘要： A resonator for microwave or VHF-UHF bands has a ring dielectric plate, one surface of which is metalized to make a resonant line, and at least one of other surfaces of which is also metalized to make a grounded or earth conductor. The resonator is very small in size and has a large unloaded Q value. Several embodiments are disclosed.

摘要翻译： 用于微波或VHF-UHF频带的谐振器具有环形电介质板，其一个表面被金属化以形成谐振线，并且其中的至少一个表面也被金属化以形成接地或接地导体。 谐振器的尺寸非常小，并且具有大的卸载Q值。 公开了几个实施例。

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。

公开(公告)号：US06407718B2

公开(公告)日：2002-06-18

申请号：US09794339

申请日：2001-02-28

申请人： Naoki Adachi ,  Takashi Fukagawa ,  Suguru Fujita ,  Kenichi Maeda ,  Kazuaki Takahashi ,  Makoto Hasegawa ,  Morikazu Sagawa ,  Mitsuo Makimoto

发明人： Naoki Adachi ,  Takashi Fukagawa ,  Suguru Fujita ,  Kenichi Maeda ,  Kazuaki Takahashi ,  Makoto Hasegawa ,  Morikazu Sagawa ,  Mitsuo Makimoto

IPC分类号： H01Q138

CPC分类号： H01Q9/0485

摘要： A hemispherical dielectric resonator is arranged on a conductive substrate with a flat surface of the resonator in contact with the conductive substrate and fixed by a pair of fixing blocks. The dielectric resonator is fed with a signal feeder at a position at one side of the resonator such that intensity of the electric field is higher at that position. The fixing blocks contact a portion of the dielectric resonator where the intensity of the electric field is of a local minimum.

摘要翻译： 半导体介质谐振器布置在导电衬底上，谐振器的平坦表面与导电衬底接触并由一对固定块固定。 介质谐振器在谐振器一侧的位置处馈送有信号馈送器，使得该位置的电场强度较高。 固定块与介质谐振器的一部分接触，其中电场的强度为局部最小值。

公开(公告)号：US5587690A

公开(公告)日：1996-12-24

申请号：US509663

申请日：1995-07-31

申请人： Hiroyuki Yabuki ,  Morikazu Sagawa ,  Mitsuo Makimoto

发明人： Hiroyuki Yabuki ,  Morikazu Sagawa ,  Mitsuo Makimoto

IPC分类号： H01P7/08 ,  H03B1/00 ,  H03B5/18 ,  H03B7/12 ,  H03B7/14 ,  H03D7/16 ,  H03L7/099 ,  H03L7/10 ,  H30L7/099

CPC分类号： H01P7/088 ,  H03B5/1852 ,  H03B7/12 ,  H03L7/099 ,  H03B2200/0016 ,  H03B2200/0034 ,  H03B2200/0048 ,  H03B2201/0208 ,  H03B2201/0225 ,  H03B7/14 ,  H03D7/161 ,  H03L7/10

摘要： A first oscillator includes: a ring resonator; an oscillation circuit having a negative resistance active circuit coupled to a first point on the ring resonator for oscillating at an oscillation frequency and resonating the resonator; an output terminal, coupled to a second point on the ring resonator where a voltage is substantially zero with respect to the predetermined frequency when the ring resonator resonates, for outputting a resonant frequency signal, wherein even order harmonic components are outputted with the fundamental component suppressed. A second oscillator includes a ring resonator having points A to D equidistantly dividing the ring resonator, first and second oscillation circuits coupled to the points A and B respectively, first and second grounding capacitors having capacitance equivalent to those of the first and second oscillation circuits. Thus, two independent oscillators which do not affect each other are provided with a single resonator. In the first and second oscillators, grounding capacitors, a resonant capacitor may be provided to miniaturize the oscillator. Variable capacitances may be provided to prevent the point from moving with a change in the controlled oscillation frequency. Frequency synthesizers and communication apparatus including the first or second oscillator are also disclosed.

摘要翻译： 第一振荡器包括：环形谐振器; 振荡电路，其具有耦合到所述环形谐振器上的第一点的负电阻有源电路，以振荡频率振荡并谐振谐振器; 输出端子，耦合到环形谐振器上的第二点，其中当环形谐振器谐振时相对于预定频率的电压基本上为零，用于输出谐振频率信号，其中偶数次谐波分量被抑制成基本分量 。 第二振荡器包括环形谐振器，其具有等距分割环形谐振器的点A至D，分别耦合到点A和B的第一和第二振荡电路，第一和第二接地电容器具有与第一和第二振荡电路相同的电容。 因此，没有彼此影响的两个独立振荡器设置有单个谐振器。 在第一和第二振荡器中，可以提供接地电容器，谐振电容器以使振荡器小型化。 可以提供可变电容以防止点随着受控振荡频率的变化而移动。 还公开了包括第一或第二振荡器的频率合成器和通信装置。