-
公开(公告)号：US5138274A
公开(公告)日：1992-08-11
申请号：US707455
申请日：1991-05-30
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
CPC分类号： H03G3/3042
摘要： In a linear amplifier circuit, an amplifier amplifies an input signal to produce an output signal, an input signal envelope detector detects the envelope of the input signal, and an output signal envelope detector detects the envelope of the output signal. The difference between the outputs of the envelope detectors is determined, and the amplifier is controlled in accordance with the difference so that the level of the output signal is linearly related to the input signal. Compensation circuits are provided for temperature compensation of the linearity in the characteristic of the envelope detectors.
摘要翻译： 在线性放大器电路中，放大器放大输入信号以产生输出信号，输入信号包络检测器检测输入信号的包络，输出信号包络检测器检测输出信号的包络。 确定包络检测器的输出之间的差异，并且根据差值来控制放大器，使得输出信号的电平与输入信号线性相关。 提供补偿电路用于温度补偿包络检测器特性的线性度。
-
公开(公告)号：US5247542A
公开(公告)日：1993-09-21
申请号：US682235
申请日：1991-04-09
申请人： Tetsuo Onodera , Eiichi Nakanishi
发明人： Tetsuo Onodera , Eiichi Nakanishi
CPC分类号： H03G3/3042 , H03F1/3247 , H03F1/3288 , H04L27/2032
摘要： A quadrature phase-shift keying modulator produces a QPSK signal which is amplified by a power amplifier. The amplitude gain of the power amplifier is controlled in response to an amplitude difference between the QPSK signal output by the modulator and the amplified QPSK signal output by the power amplifier. A phase detector, connected in series between the modulator and the power amplifier, eliminates amplitude variations from the QPSK signal prior to amplification. A voltage-controlled phase shifter, connected in series between the phase detector and the power amplifier, shifts the QPSK signal in phase by an amount responsive to amplitude information in the QPSK signal.
摘要翻译： 正交相移键控调制器产生由功率放大器放大的QPSK信号。 响应于由调制器输出的QPSK信号与由功率放大器输出的放大的QPSK信号之间的振幅差来控制功率放大器的振幅增益。 在调制器和功率放大器之间串联连接的相位检测器消除了放大前的QPSK信号的幅度变化。 串联连接在相位检测器和功率放大器之间的电压控制移相器将QPSK信号相位移相应于QPSK信号中幅度信息的量。
-
3.发明授权
公开(公告)号：US5144258A
公开(公告)日：1992-09-01
申请号：US729601
申请日：1991-07-15
CPC分类号： H03G3/3047 , H03G3/3078
摘要： A power amplifier system suitable for a mobile radio receiver/transmitter is described. A wave form signal to be transmitted is made smooth during its rise and fall times, thereby making it possible to prevent a transmission spectrum from expanding and interfering with the adjacent channels. The power amplifier system compares an envelope signal of an inputted RF signal and that of an RF signal to be outputted, whereby the power amplifier system as a whole provides linear amplification.
摘要翻译： 描述了适用于移动无线电接收机/发射机的功率放大器系统。 要发送的波形信号在其上升和下降时间期间变得平滑，从而可以防止发射频谱扩展和干扰相邻信道。 功率放大器系统将输入的RF信号的包络信号与要输出的RF信号的包络信号进行比较，由此整个功率放大器系统提供线性放大。
-
公开(公告)号：US5182527A
公开(公告)日：1993-01-26
申请号：US744393
申请日：1991-08-13
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
CPC分类号： H03F1/0211 , H03F3/24 , H03G3/004 , H03G3/3047 , H03F2200/408
摘要： A power amplifying apparatus according to the present invention can provide a stable electric power output with wide range by controlling both of the output amplifier for amplifying the electric power and the pre-amplifier disposed at the front of the output amplifier. Furthermore, in order to avoid the disadvantage that a transmission spectrum is expanded because of no supply of a stable voltage to be supplied to the electric power amplifier, thereby producing a cross-talk, a stabilizing power source circuit is provided to stabilize the voltage between the power amplifier and the power source for supplying the voltage.
摘要翻译： 根据本发明的功率放大装置可以通过控制用于放大电力的输出放大器和布置在输出放大器的前面的前置放大器来提供具有宽范围的稳定的电力输出。 此外，为了避免由于没有提供要供给到功率放大器的稳定电压而使发射频谱扩大的缺点，由此产生串扰，提供稳定电源电路来稳定电压 功率放大器和用于提供电压的电源。
-
公开(公告)号：US5126688A
公开(公告)日：1992-06-30
申请号：US672414
申请日：1991-03-20
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
CPC分类号： H03G3/3047 , H03G3/004
摘要： A power amplifying apparatus according to the present invention can provide a stable electric power output with wide range by controlling both of the output amplifier for amplifying the electric power and the pre-amplifier disposed at the front of the output amplifier. Furthermore, in order to avoid the disadvantage that a transmission spectrum is expanded because of no supply of a stable voltage to be supplied to the electric power amplifier, thereby producing a cross-talk, a stabilizing power source circuit is provided to stabilize the voltage between the power amplifier and the power source for supplying the voltage.
摘要翻译： 根据本发明的功率放大装置可以通过控制用于放大电力的输出放大器和布置在输出放大器的前面的前置放大器来提供具有宽范围的稳定的电力输出。 此外，为了避免由于没有提供要供给到功率放大器的稳定电压而使发射频谱扩大的缺点，由此产生串扰，提供稳定电源电路以稳定电压 功率放大器和用于提供电压的电源。
-
公开(公告)号：US5818392A
公开(公告)日：1998-10-06
申请号：US557808
申请日：1995-11-14
申请人： Shinji Oka , Eiichi Nakanishi , Tetsuo Onodera , Hiroshi Shimizu
发明人： Shinji Oka , Eiichi Nakanishi , Tetsuo Onodera , Hiroshi Shimizu
CPC分类号： H01Q1/244
摘要： In a mobile radio transceiver, an antenna has a fixed element and a movable element. When the movable element is in an extended state, the movable element functions. On the other hand, when the movable element is in a retracted state, the fixed element functions. An impedance matching circuit preferentially performs impedance matching relative to the fixed element. A reactance element is further provided which is connected to the movable element when the movable element is in the extended state. On the other hand, the reactance element is out of connection to the movable element when the movable element is in the retracted state. With this arrangement, the impedance matching circuit and the reactance element cooperatively achieve impedance matching relative to the movable element when the movable element functions. Alternatively, if the impedance matching circuit preferentially performs impedance matching relative to the movable element, the reactance element is connected to the fixed element when the fixed element functions.
摘要翻译： 在移动无线电收发机中，天线具有固定元件和可移动元件。 当可移动元件处于伸展状态时，可移动元件起作用。 另一方面，当可动元件处于缩回状态时，固定元件起作用。 阻抗匹配电路优先执行相对于固定元件的阻抗匹配。 还提供了一个电抗元件，当可移动元件处于伸出状态时，该电抗元件连接到可移动元件。 另一方面，当可移动元件处于缩回状态时，电抗元件与可移动元件不连接。 利用这种布置，当可移动元件起作用时，阻抗匹配电路和电抗元件协调地实现相对于可移动元件的阻抗匹配。 或者，如果阻抗匹配电路相对于可动元件优先进行阻抗匹配，则当固定元件起作用时，电抗元件连接到固定元件。
-
公开(公告)号：US5832373A
公开(公告)日：1998-11-03
申请号：US750268
申请日：1996-12-03
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
CPC分类号： H04W52/52 , H03G3/3042
摘要： An output power control device is provided with an isolator, to which a transmission signal, that has been power amplified by a power amplifier, is input. The transmission signal is input via a transmission line connected to an output side of the power amplifier. The isolator only passes a progressive wave component of the transmission signal. The output power control device also includes a detection circuit for forming an actual output power detection signal by extracting part of an output power from a point of input of the isolator. Further, a reactance adjusting element connected to the point of input of the isolator cancels a parasitic reactance associated with the extracting section of the detection circuit.
摘要翻译： PCT No.PCT / JP96 / 00851 Sec。 371日期1996年12月3日第 102（e）日期1996年12月3日PCT 1996年3月29日PCT公布。 出版物WO96 / 31954 日期1996年10月10日输出功率控制装置设置有隔离器，输入由功率放大器功率放大的发送信号。 通过连接到功率放大器的输出侧的传输线输入发送信号。 隔离器仅通过传输信号的逐行波分量。 输出功率控制装置还包括检测电路，用于通过从隔离器的输入点提取输出功率的一部分来形成实际的输出功率检测信号。 此外，连接到隔离器的输入点的电抗调节元件抵消与检测电路的提取部分相关联的寄生电抗。
-
公开(公告)号：US5722062A
公开(公告)日：1998-02-24
申请号：US456342
申请日：1995-06-01
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
CPC分类号： H03G3/3068 , H04B1/26
摘要： A linear receiver is disclosed which includes a linear receiver having: a preamplifier for amplifying linearly a modulated carrier signal (RF signal) having a first frequency trapped by an antenna; a mixer for converting the RF signal into an intermediate frequency signal having a second frequency less than the first frequency in accordance with a local oscillation signal; an IF stage for analogue delivering a demodulated output signal by saturatedly amplifying the intermediate frequency signal and for outputting an RSSI signal which indicates a level of the RF signal; an IF stage for digital incorporating therein an AGC input terminal for controlling an amplitude gain thereof for outputting an in-phase (I) signal and a quadrate (Q) signal, respectively, with the intermediate frequency signal by linearly amplifying the intermediate frequency signal; a first feed back loop circuit for providing a first feed back control signal to the AGC input terminal so as to keep demodulation levels of the I signal and the Q signal constant and not to be saturated; and a second feed back loop circuit for providing a second feed back control signal to the preamplifier and/or the mixer so as to keep the preamplifier and/or the mixer not to be saturated.
摘要翻译： 公开了一种线性接收机，其包括：线性接收机，具有：前置放大器，用于线性地放大具有由天线捕获的第一频率的调制载波信号（RF信号）; 混频器，用于根据本地振荡信号将RF信号转换成具有小于第一频率的第二频率的中频信号; IF阶段，用于通过饱和放大中频信号并输出指示RF信号的电平的RSSI信号来模拟传送解调的输出信号; 用于数字并入其中的用于控制其幅度增益的AGC输入端的IF级，用于通过线性放大中频信号分别输出同相（I）信号和正交（Q）信号与中频信号; 第一反馈回路电路，用于向AGC输入端提供第一反馈控制信号，以保持I信号和Q信号的解调电平恒定且不饱和; 以及用于向前置放大器和/或混频器提供第二反馈控制信号以便保持前置放大器和/或混频器不饱和的第二反馈回路电路。
-
9.发明授权Portable electronic device and method for supplying current to different loads 失效便携式电子设备和用于向不同负载供电的方法
公开(公告)号：US5701597A
公开(公告)日：1997-12-23
申请号：US436921
申请日：1995-05-09
申请人： Eiichi Nakanishi , Tetsuo Onodera
发明人： Eiichi Nakanishi , Tetsuo Onodera
IPC分类号： H04B1/40 , H02J7/00 , H04B1/16 , H04B1/44 , H04B1/56 , H04B7/26 , H04M1/00 , H02J7/34 , H04B1/38
CPC分类号： H04B1/56 , H02J7/0024 , H02J7/0031 , H04B1/1615 , H04B1/44
摘要： According to a first aspect, a portable electronic device has at least two load circuits which are independently powered by different batteries. According to a second aspect, the load circuits are powered by the same battery, but their power lines are branched from a node located close to the battery, thereby reducing common impedance. According to a third aspect, two power lines are coupled through switches to two independent batteries, and are mutually coupled through a third switch. The switches are controlled according to the discharge states of the batteries. According to a fourth aspect, a battery charger charges two or more batteries by supplying current to them for short intervals in turn, so that all batteries reach full charge at substantially the same time.
摘要翻译： 根据第一方面，便携式电子设备具有由不同电池独立供电的至少两个负载电路。 根据第二方面，负载电路由相同的电池供电，但是它们的电力线从位于电池附近的节点分支，从而降低公共阻抗。 根据第三方面，两个电源线通过开关耦合到两个独立的电池，并且通过第三开关相互耦合。 开关根据电池的放电状态进行控制。 根据第四方面，电池充电器通过依次向它们短时间间隔地供给两个或更多个电池来充电，从而所有的电池在大致相同的时间达到完全充电。
-
公开(公告)号：US06442146B1
公开(公告)日：2002-08-27
申请号：US09075249
申请日：1998-05-11
申请人： Tetsuo Onodera , Hiroshi Usami , Akihiro Shibuya , Eimatsu Moriyama , Kiyoshi Hamaguchi , Yoichi Saito , Tadashi Matsumoto , Mitsuhiko Mizuno
发明人： Tetsuo Onodera , Hiroshi Usami , Akihiro Shibuya , Eimatsu Moriyama , Kiyoshi Hamaguchi , Yoichi Saito , Tadashi Matsumoto , Mitsuhiko Mizuno
IPC分类号： H04B7212
CPC分类号： H04B7/212
摘要： The present invention is directed to a TDMA communication system which is adapted to different communication environments or prepares different communication environments and allows each mobile station to be set for working in any one of the different communication environments. The communication system commonly uses a TDMA format that has a fixed frame-length and a constant number of bits for each of the slots composing the frame. The communication environments have prepared respective sets of communication conditions, each set including a transmission power, a modulating method, the number of multiplexed signals, error-correction, an antenna gain, a frequency hopping value and a diversity value. At each mobile station and each base station, one of plural sets of communication conditions for respective environments is selected to establish communication with each other under the selected environment.
摘要翻译： 本发明涉及适用于不同通信环境或准备不同通信环境的TDMA通信系统，并且允许每个移动站被设置用于在不同通信环境中的任何一个中工作。 通信系统通常使用对于构成帧的每个时隙具有固定的帧长度和固定比特数的TDMA格式。 通信环境已经准备好各种通信条件，每组包括传输功率，调制方法，多路复用信号的数量，纠错，天线增益，跳频值和分集值。 在每个移动站和每个基站处，选择用于各个环境的多组通信条件之一，以在所选择的环境下建立彼此的通信。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.017 秒)
