公开(公告)号：US6130897A

公开(公告)日：2000-10-10

申请号：US925574

申请日：1997-09-08

Applicant: Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Yoichi Morinaga ,  Makoto Aisaka

Inventor： Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Yoichi Morinaga ,  Makoto Aisaka

IPC: H04B1/40 ,  H04B1/50 ,  H04B1/54 ,  H04B1/56 ,  H04J3/00 ,  H04J4/00 ,  H04L5/16

CPC classification number: H04B1/006 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/406 ,  H04B1/408 ,  H04B1/54 ,  H04B1/50 ,  H04B1/56

Abstract: A Time Division Multiple Access FDD/TDD dual mode system includes a switch having first and second common terminals and first and second terminals. Also included are a TDD demodulation circuit for demodulating a TDD received signal from the first common terminal; a FDD demodulation circuit for demodulating a FDD received signal; and a FDD/TDD modulation circuit for modulating and impressing the modulated signal onto the second common terminal. A FDD transmission band selection circuit is connected to the first terminal, and a TDD transmission-reception band selection circuit is connected to the second terminal. The first common terminal of the switch is connected to the second terminal during TDD reception, whereas the second common terminal is connected to the first terminal during FDD transmission and to the second terminal during TDD transmission.

Abstract translation: 时分多址FDD / TDD双模式系统包括具有第一和第二公共终端以及第一和第二终端的交换机。 还包括用于解调来自第一公共终端的TDD接收信号的TDD解调电路; 用于解调FDD接收信号的FDD解调电路; 以及FDD / TDD调制电路，用于将调制信号调制和压入第二公共终端。 FDD传输频带选择电路连接到第一终端，并且TDD发送接收频带选择电路连接到第二终端。 在TDD接收期间，交换机的第一公共终端连接到第二终端，而在FDD传输期间第二公共终端连接到第一终端，在TDD传输期间连接到第二终端。

公开(公告)号：US06114911A

公开(公告)日：2000-09-05

申请号：US275385

申请日：1999-03-24

Applicant: Hiroshi Iwai ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Youichi Morinaga

Inventor： Hiroshi Iwai ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Takashi Enoki ,  Youichi Morinaga

IPC: H01P5/10 ,  H03F3/195 ,  H03F3/21 ,  H03F3/26 ,  H03F3/60 ,  H03F3/68

CPC classification number: H03F3/602 ,  H03F3/211

Abstract: A power amplifier has an input signal splitting part for splitting the input signal into two output signals each having equal power and phase difference of 180 degrees with respect to each other. A first signal on-off selection part for switching conduction of one of the output signals. A first amplifying part for amplifying the signal from the first signal on-off selection part. A second signal on-off selection part for switching conduction of the signal outputted from the first amplifying part. A second amplifying part for amplifying the other of the output signals from the input signal splitting part. An output signal combining part for providing a phase difference of 180 degrees between the output of the second signal on-off selection part and the output of the second amplifying part and combining them. A bias on-off part for switching on and off at least the first amplifying part, wherein, when the output level is high, the first and second signal on-off selection parts are turned on and, at the same time, the first and second amplifying parts are turned on by the bias on-off part, so that push-pull operation is performed, and when the output level is low, the first and second signal on-off selection parts are turned off and the first amplifying part is turned off by the bias on-off part and the second amplifying part performs single-ended operation.

Abstract translation: 功率放大器具有用于将输入信号分离成两个输出信号的输入信号分离部件，每个输出信号具有彼此相等的功率和相位差为180度的相位差。 第一信号开关选择部分，用于切换输出信号之一的导通。 用于放大来自第一信号开 - 关选择部分的信号的第一放大部分。 第二信号开关选择部分，用于切换从第一放大部分输出的信号的导通。 第二放大部分，用于放大来自输入信号分离部分的另一个输出信号。 输出信号组合部分，用于在第二信号开关选择部分的输出和第二放大部分的输出之间提供180度的相位差，并将它们组合。 用于至少对第一放大部分进行导通和截止的偏压开关部分，其中，当输出电平较高时，第一和第二信号开 - 关选择部分被接通，同时第一和第 第二放大部分由偏置开 - 关部分导通，从而执行推挽操作，并且当输出电平低时，第一和第二信号开 - 关选择部分被关断，第一放大部分是 由偏置开 - 关部分关断，第二放大部分执行单端操作。

公开(公告)号：US6081694A

公开(公告)日：2000-06-27

申请号：US174537

申请日：1998-10-19

Applicant: Toru Matsuura ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Youichi Morinaga

Inventor： Toru Matsuura ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Youichi Morinaga

IPC: H03F3/60 ,  F42B12/36 ,  H03F3/189 ,  H03F3/24 ,  H04B1/04 ,  H04B1/40 ,  H04B1/44

CPC classification number: H04B1/0458 ,  H03F1/56 ,  H03F3/193 ,  H03F3/245 ,  H04B1/006 ,  H03F2200/111 ,  H03F2200/387

Abstract: Disclosed is a transmitter for switching and transmitting signals of plural frequency bands. For example, the signals of two frequency bands are switched and transmitted. For the transmission in a first frequency band, of transistors 104, 105 are turned off, whereby a power amplifying transistor 102 is matched by an input wide band matching circuit 101 and an output main matching circuit 103, so that the high efficiency linear amplification is accomplished. For the transmission in a second frequency band, the transistor 104 is turned on while the transistor 105 is turned off, whereby the power amplifying transistor 102 is matched by a capacitance 108 as well as the input wide band matching circuit 101 and the output main matching circuit 103, so that the high efficiency linear amplification is accomplished. An external switch for switching the matching circuits is thus unnecessary.

Abstract translation: 公开了一种用于切换和发送多个频带的信号的发射机。 例如，切换并发送两个频带的信号。 对于第一频带中的传输，晶体管104,105截止，功率放大晶体管102由输入宽带匹配电路101和输出主匹配电路103匹配，使得高效线性放大为 完成了 为了在第二频带中的传输，晶体管104导通，而晶体管105截止，由此功率放大晶体管102与电容108以及输入宽带匹配电路101和输出主匹配 电路103，从而实现高效线性放大。 因此，不需要用于切换匹配电路的外部开关。

公开(公告)号：US6006080A

公开(公告)日：1999-12-21

申请号：US910940

申请日：1997-08-08

Applicant: Hidenobu Kato ,  Keiichi Nakayama ,  Seiichi Yamaguchi ,  Takashi Enoki ,  Manabu Yamaguchi ,  Kaoru Ishida ,  Hiroaki Kosugi

Inventor： Hidenobu Kato ,  Keiichi Nakayama ,  Seiichi Yamaguchi ,  Takashi Enoki ,  Manabu Yamaguchi ,  Kaoru Ishida ,  Hiroaki Kosugi

IPC: H03H7/38 ,  H03D7/12 ,  H04B1/26 ,  H04B1/40 ,  H04B1/08 ,  H04B1/110

CPC classification number: H04B1/0057 ,  H04B1/005 ,  H04B1/26 ,  H04B1/406

Abstract: A receiving mixer device for a mobile radio transceiver which operates with multiple modulation modes and within multiple frequency bands. The receiving mixer includes a plurality of mixers each for converting a received radio frequency signal to an intermediate frequency, a common connection part to which output terminals of the mixers are connected in common, a plurality of impedance conversion circuits connected to the common connection part, and output terminals for the impedance conversion circuits. The number of mixers is equal to the number of frequency bands of the received radio frequency signal. The number of the intermediate frequencies is equal to the number of modulation modes of the received radio frequency signal. The number of the impedance conversion circuits is equal to the number of intermediate frequencies, and each of the impedance conversion circuits passes only a single predetermined frequency of the intermediate frequencies used by the device.

Abstract translation: 一种用于移动无线电收发机的接收混频器装置，其以多种调制模式并在多个频带内工作。 接收混频器包括多个混频器，每个混频器用于将接收的射频信号转换成中频;共同连接部分，混频器的输出端共同连接;多个阻抗转换电路，连接到公共连接部分， 和用于阻抗转换电路的输出端子。 混频器的数量等于所接收的射频信号的频带数。 中间频率的数量等于所接收的射频信号的调制模式的数量。 阻抗转换电路的数量等于中频数，并且每个阻抗转换电路仅通过器件使用的中频的单个预定频率。

公开(公告)号：US5852384A

公开(公告)日：1998-12-22

申请号：US844039

申请日：1997-04-18

Applicant: Makoto Sakakura ,  Hisanaga Miyoshi ,  Kouji Hashimoto ,  Nobuo Fuse ,  Hiroaki Kosugi ,  Kaoru Ishida

Inventor： Makoto Sakakura ,  Hisanaga Miyoshi ,  Kouji Hashimoto ,  Nobuo Fuse ,  Hiroaki Kosugi ,  Kaoru Ishida

IPC: H03B5/18 ,  H03B5/12

CPC classification number: H03B5/1847

Abstract: A dual band oscillator circuit according to the present invention comprises an oscillator circuit portion that oscillates at a first frequency, an oscillator circuit portion that oscillates at a second frequency, a buffer amplifier circuit portion to which an output of the first oscillator circuit portion is input through a first stage-to-stage coupling element and an output of the second oscillator circuit portion is input through a second stage-to-stage coupling element. Operation is switched between the first and second oscillator circuits by an externally applied control voltage signal.

Abstract translation: 根据本发明的双频带振荡器电路包括以第一频率振荡的振荡器电路部分，以第二频率振荡的振荡器电路部分，输入第一振荡器电路部分的输出的缓冲放大器电路部分 通过第一级到级耦合元件，并且第二振荡器电路部分的输出通过第二级到级耦合元件输入。 通过外部施加的控制电压信号在第一和第二振荡器电路之间切换操作。

公开(公告)号：US08599965B2

公开(公告)日：2013-12-03

申请号：US13388495

申请日：2010-04-07

Applicant: Akira Kato ,  Kaoru Ishida

Inventor： Akira Kato ,  Kaoru Ishida

IPC: H03C1/52

CPC classification number: H03F1/30 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/331 ,  H03F2200/336 ,  H03F2200/405 ,  H03F2200/447 ,  H03F2200/451 ,  H03G3/3042 ,  H04B1/0475

Abstract: A transmitter circuit includes a first synthesizer section, and a second synthesizer section which consumes less current than the first synthesizer section. The transmitter circuit performs switching such that the first synthesizer section is operated and the second synthesizer section is powered off in polar modulation, and the second synthesizer section is operated and the first synthesizer section is powered off in quadrature modulation, thereby reducing consumed power. While the first synthesizer section is operating, calibration for an oscillation frequency is performed, and when the operation is stopped, a calibration value is stored. When an operation of the first synthesizer section is restarted, the stored calibration value is corrected by using temperature change, thereby enhancing calibration accuracy and preventing degradation in quality of a transmission signal.

Abstract translation: 发射机电路包括第一合成器部分和与第一合成器部分相比消耗更少电流的第二合成器部分。 发射机电路进行切换，使得第一合成器部分被操作，并且第二合成器部分在极性调制中被断电，并且第二合成器部分被操作，并且第一合成器部分在正交调制中被断电，从而降低了功耗。 当第一合成器部分工作时，执行振荡频率的校准，当操作停止时，存储校准值。 当重新启动第一合成器部分的操作时，通过使用温度变化来校正存储的校准值，从而提高校准精度并防止传输信号的质量劣化。

公开(公告)号：US08532591B2

公开(公告)日：2013-09-10

申请号：US13383256

申请日：2010-06-02

Applicant: Mikihiro Shimada ,  Ryo Kitamura ,  Kaoru Ishida ,  Hiroshi Komori

Inventor： Mikihiro Shimada ,  Ryo Kitamura ,  Kaoru Ishida ,  Hiroshi Komori

IPC: H04B1/02

CPC classification number: H03F1/0222 ,  H03F1/0266 ,  H03F3/24 ,  H03F2200/408 ,  H03G3/004 ,  H03G3/3042 ,  H03G11/00 ,  H04B1/0475

Abstract: A transmission circuit according to the present invention includes: an amplitude signal driving section (220) that generates a control voltage based on an amplitude signal in a high-output mode, and generates a control voltage at a predetermined level and a bias current based on the amplitude signal in a low-output mode; a variable gain adjustment section (114) that adjusts a power level of the phase signal; and a power amplifier (130) which amplitude-modulates the phase signal having the adjusted power level on the basis of the control voltage, in the high-output mode, and to a power supply terminal of which the control voltage is supplied and which amplitude-modulates the phase signal having the adjusted power level on the basis of the bias current, in the low-output mode. In a specific region in a low-output region and close to a high-output region, the variable gain adjustment section (114) adjusts the power level of the phase signal to a predetermined upper-limit level, and the amplitude signal driving section (220) adjusts a gain of the power amplifier (130) to obtain a desired output power level.

Abstract translation: 根据本发明的发送电路包括：振幅信号驱动部（220），其根据高输出模式的振幅信号生成控制电压，并且产生基于预定电平的控制电压和基于 幅度信号处于低输出模式; 调整所述相位信号的功率电平的可变增益调整部（114） 以及功率放大器（130），其在高输出模式下基于控制电压对调整后的功率电平的相位信号进行幅度调制，并且向提供控制电压的电源端子和幅度 在低输出模式下，根据偏置电流调制具有调整功率电平的相位信号。 在低输出区域的特定区域中，接近高输出区域的可变增益调整部114将相位信号的功率电平调整为规定的上限电平，振幅信号驱动部 220）调整功率放大器（130）的增益以获得期望的输出功率电平。

公开(公告)号：US08396432B2

公开(公告)日：2013-03-12

申请号：US13381240

申请日：2010-04-01

Applicant: Ryo Kitamura ,  Kaoru Ishida ,  Mikihiro Shimada ,  Hiroshi Komori

Inventor： Ryo Kitamura ,  Kaoru Ishida ,  Mikihiro Shimada ,  Hiroshi Komori

IPC: H04B1/04

CPC classification number: H03F1/0261 ,  H03F1/304 ,  H03F1/32 ,  H03F3/245 ,  H03F2200/108 ,  H03F2200/18 ,  H03F2200/408 ,  H03F2200/468

Abstract: A transmitter circuit is provided which is capable of reducing modulation distortion even when an output power of a power amplifying section 141 is low. A signal generation section 11 generates an amplitude signal and a phase signal. A regulator 12 outputs a current based on the amplitude signal. A phase modulation section 13 phase-modulates the phase signal, and outputs a phase-modulated signal. The power amplifying section 141 receives the current which is based on the amplitude signal and supplied as a bias current from the regulator 12, and amplifies the phase-modulated signal by using the supplied current. Further, to the power amplifying section 141, a predetermined DC voltage is supplied as a collector voltage.

Abstract translation: 提供一种即使当功率放大部分141的输出功率低时也能够降低调制失真的发射机电路。 信号生成部11生成振幅信号和相位信号。 调节器12基于振幅信号输出电流。 相位调制部13对相位信号进行相位调制，并输出相位调制信号。 功率放大部分141接收基于振幅信号并作为偏置电流从调节器12提供的电流，并且通过使用所提供的电流放大相位调制信号。 此外，向功率放大部141提供预定的DC电压作为集电极电压。

公开(公告)号：US08369802B2

公开(公告)日：2013-02-05

申请号：US12421423

申请日：2009-04-09

Applicant: Maki Nakamura ,  Kaoru Ishida

Inventor： Maki Nakamura ,  Kaoru Ishida

IPC: H04B1/02

CPC classification number: H04B1/0475 ,  H03C5/00 ,  H03F1/0222 ,  H03F2200/447

Abstract: The polar modulation apparatus of the present invention can control the output power of a transmission signal over a wide range and compensate characteristic degradation reliably upon temperature change. Polar modulation transmission apparatus 100 is provided with: temperature sensor 120; temperature compensation section 160-1 that corrects an amplitude signal and performs temperature compensation for transmission power amplification section 190; temperature compensation section 160-2 that corrects a power amplification signal and performs temperature compensation for power adjustment section 180; and correction value setting section 130 that sets correction values for temperature compensation section 160-1 and temperature compensation section 160-2, and, while only the amplitude signal is corrected according to a measurement result in temperature sensor 120 in the first mode, the amplitude signal and the power adjustment signal are corrected according to a measurement result in the second mode.

Abstract translation: 本发明的极化调制装置可以在宽范围内控制发送信号的输出功率，并在温度变化时可靠地补偿特性劣化。 极调制传输装置100设置有：温度传感器120; 温度补偿部160-1，其校正振幅信号，并对发送功率放大部190执行温度补偿; 温度补偿部160-2，其对功率放大信号进行校正，对功率调整部180进行温度补偿; 以及校正值设定部130，其对温度补偿部160-1和温度补偿部160-2设定校正值，在仅在第一模式下，根据温度传感器120的测量结果对幅度信号进行校正时，振幅 信号和功率调整信号根据第二模式中的测量结果被校正。

公开(公告)号：US08219050B1

公开(公告)日：2012-07-10

申请号：US13433705

申请日：2012-03-29

Applicant: Takatoshi Kawai ,  Kaoru Ishida

Inventor： Takatoshi Kawai ,  Kaoru Ishida

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433

Abstract: A radio transmission apparatus according to the present invention detects an output current of a power supply section that varies in response to a variation of the output impedance of an amplification section, and corrects a distortion of the input/output characteristic of the amplification section by using an LUT corresponding to the detected output current. In addition, a threshold used for switching an LUT is caused to be different depending on a switching direction between LUTs, thereby suppressing frequent occurrence of switching of the LUT.