公开(公告)号：US06114911A

公开(公告)日：2000-09-05

申请号：US275385

申请日：1999-03-24

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

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

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

CPC分类号： H03F3/602 ,  H03F3/211

摘要： 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.

摘要翻译： 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

申请人： Toru Matsuura ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Youichi Morinaga

发明人： Toru Matsuura ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Youichi Morinaga

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

CPC分类号： H04B1/0458 ,  H03F1/56 ,  H03F3/193 ,  H03F3/245 ,  H04B1/006 ,  H03F2200/111 ,  H03F2200/387

摘要： 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.

摘要翻译： 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：US5973557A

公开(公告)日：1999-10-26

申请号：US950859

申请日：1997-10-15

申请人： Masayuki Miyaji ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Yoichi Morinaga ,  Hidenobu Kato ,  Takashi Enoki

发明人： Masayuki Miyaji ,  Kaoru Ishida ,  Hiroaki Kosugi ,  Yoichi Morinaga ,  Hidenobu Kato ,  Takashi Enoki

IPC分类号： H03F1/02 ,  H03F3/72 ,  H04B1/04 ,  H04B1/40 ,  H03F1/14 ,  H03F3/68

CPC分类号： H03F3/72 ,  H03F1/0277 ,  H03F2203/7236 ,  H03F2203/7239 ,  H04B1/0458 ,  H04B1/406 ,  H04B2001/045

摘要： The invention presents a high efficiency linear power amplifier of plural frequency bands reduced in the number of parts and elements, simplified in the circuit construction, and saved in the circuit space, and in FIG. 1, signals entering from a common input terminal 1 in frequency bands A and B are matched in both frequency bands A and B in a wide band matching network 2, amplified in a pre-amplifier 3, put into a common terminal 4a of a switch circuit 4, and the signal in frequency band A is put into a changeover terminal 4b, matched in a matching network 5 and amplified in a post-amplifier 6, and its output is matched in a post-matching network 7 and sent out into an output terminal 8, while, similarly, the signal in frequency band B is put into other changeover terminal 4c of the switch circuit 4, matched in a matching network 9, amplified in a post-amplifier 10, and its output is matched in a post-matching network 11 and is sent out into an output terminal 12.The invention also presents a power amplifier capable of maintaining a similar high efficiency characteristic if the output power is lowered from the output power of maximum efficiency, and in FIG. 10, first and second power amplifiers 113, 114 are disposed in parallel, and a necessary number of power amplifiers are connected depending on a required output power by switch circuits 115 to 118, and the power source is turned on only in the connected power amplifiers, while the other power amplifiers are turned off, and therefore by the lowering portion of the output power, the current consumption decreases in proportion, so that the equivalent high efficiency operation same as in the case maximum efficiency is realized.

摘要翻译： 本发明提出了一种减少零件和元件数量的多个频带的高效线性功率放大器，简化了电路结构，并节省在电路空间中。 如图1所示，在宽频带匹配网络2中的频带A和B中的频带A和B中从公共输入端子1进入的信号被匹配，在前置放大器3中放大，放入开关的公共端子4a 电路4，并且将频带A中的信号放入转换端子4b中，在匹配网络5中匹配并在后置放大器6中放大，并且其输出在后匹配网络7中匹配并发送到 输出端子8，同样地，将频带B中的信号放入开关电路4的其他转换端子4c中，在匹配网络9中匹配，在后置放大器10中放大，并且其输出在后置 - 匹配网络11并被发送到输出端子12.本发明还提供了一种如果输出功率从最大效率的输出功率降低而能够保持类似的高效率特性的功率放大器，并且在图1中， 如图10所示，第一和第二功率放大器113,114并联设置，并且必要数量的功率放大器根据所需的输出功率被开关电路115至118连接，并且仅在连接的功率放大器中接通电源 而其他功率放大器关闭，因此通过输出功率的下降部分，电流消耗成比例地减小，从而实现与最大效率情况相同的等效高效率操作。

公开(公告)号：US6130897A

公开(公告)日：2000-10-10

申请号：US925574

申请日：1997-09-08

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

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

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

CPC分类号： H04B1/006 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/406 ,  H04B1/408 ,  H04B1/54 ,  H04B1/50 ,  H04B1/56

摘要： 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.

摘要翻译： 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：US6006080A

公开(公告)日：1999-12-21

申请号：US910940

申请日：1997-08-08

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

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

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

CPC分类号： H04B1/0057 ,  H04B1/005 ,  H04B1/26 ,  H04B1/406

摘要： 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.

摘要翻译： 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：US06226499B1

公开(公告)日：2001-05-01

申请号：US09359663

申请日：1999-07-26

申请人： Toshifumi Nakatani ,  Hisashi Adachi ,  Hiroaki Kosugi ,  Youichi Morinaga ,  Hiroyuki Itokawa ,  Shunsuke Hirano

发明人： Toshifumi Nakatani ,  Hisashi Adachi ,  Hiroaki Kosugi ,  Youichi Morinaga ,  Hiroyuki Itokawa ,  Shunsuke Hirano

IPC分类号： H04B140

CPC分类号： H04B1/403

摘要： When the radio circuit apparatus is transmitting, the output signal of the first local oscillator 102 is inputted to the transmitted frequency converter 112 as well as to the frequency divider 104, and then the output signal of the frequency divider 104 is inputted to the modulator 111. The modulator 111 modulates the output signal of the frequency divider 104 with a base band signal. The output signal of the modulator 111 is inputted to the transmitted frequency converter 112, to be converted to the frequency of a transmitted signal by the output signal of the first local oscillator 102. When the radio circuit apparatus is receiving, the output signal of the low noise amplifier 121 is inputted to the first frequency converter 122 to be converted to the first intermediate frequency by the output signal of the first local oscillator 102. The output signal of the filter 123 is inputted to the second frequency converter circuit 124 to be converted to the second intermediate frequency by the output signal of the second local oscillator 103. Thereby, unnecessary components for transmission can be easily lowered to make it possible to miniaturize the radio circuit apparatus.

摘要翻译： 当无线电电路装置正在发送时，第一本地振荡器102的输出信号也被输入到发射的频率转换器112以及分频器104，然后分频器104的输出信号被输入到调制器111 调制器111用基带信号调制分频器104的输出信号。 调制器111的输出信号通过第一本地振荡器102的输出信号被输入到发送的频率转换器112，以转换为发送信号的频率。当无线电电路装置正在接收时，输出信号 低噪声放大器121被输入到第一频率转换器122，以通过第一本地振荡器102的输出信号转换成第一中频。滤波器123的输出信号被输入到第二频率转换器电路124进行转换 通过第二本地振荡器103的输出信号输出到第二中频。由此，可以容易地降低用于传输的不必要的部件，使得可以使无线电电路装置小型化。

公开(公告)号：US5594394A

公开(公告)日：1997-01-14

申请号：US298461

申请日：1994-08-30

申请人： Atsushi Sasaki ,  Toshio Ishizaki ,  Hiroshi Takahashi ,  Tooru Sakuragawa ,  Hideaki Nakakubo ,  Ikuo Ohta ,  Tsutomu Matsumura ,  Hiroaki Kosugi ,  Naoki Yuda ,  Youichi Morinaga

发明人： Atsushi Sasaki ,  Toshio Ishizaki ,  Hiroshi Takahashi ,  Tooru Sakuragawa ,  Hideaki Nakakubo ,  Ikuo Ohta ,  Tsutomu Matsumura ,  Hiroaki Kosugi ,  Naoki Yuda ,  Youichi Morinaga

IPC分类号： H01Q21/28 ,  H01Q21/30 ,  H04B1/48 ,  H01P1/15

CPC分类号： H04B1/48 ,  H01Q21/28 ,  H01Q21/30

摘要： An antenna switching device of the present invention includes: a transmitting terminal for receiving a transmitting signal; a first antenna terminal connected to a first antenna; a second antenna terminal connected to a second antenna; a receiving terminal for outputting receiving signals received at the first antenna terminal and the second antenna terminal; a selecting unit for selecting one mode among a first mode for outputting a signal corresponding to the transmitting signal to the first antenna terminal, a second mode for outputting the receiving signal received at the first antenna to the receiving terminal, and a third mode for outputting the receiving signal received at the second antenna to the receiving terminal.

摘要翻译： 本发明的天线切换装置包括：发送端子，用于接收发送信号; 连接到第一天线的第一天线端子; 连接到第二天线的第二天线端子; 用于输出在第一天线端子和第二天线端子处接收的接收信号的接收终端; 选择单元，用于在用于将与发送信号相对应的信号输出到第一天线端子的第一模式中选择一个模式;第二模式，用于将在第一天线处接收的接收信号输出到接收终端;以及第三模式，用于输出 在第二天线处接收的接收信号到接收终端。

公开(公告)号：US5987309A

公开(公告)日：1999-11-16

申请号：US668360

申请日：1996-06-26

申请人： Hisashi Adachi ,  Hiroaki Kosugi ,  Youichi Morinaga ,  Toshio Obara

发明人： Hisashi Adachi ,  Hiroaki Kosugi ,  Youichi Morinaga ,  Toshio Obara

IPC分类号： H03L7/18 ,  H03D7/16 ,  H04B1/40 ,  H04B1/56

CPC分类号： H04B1/408 ,  H03D7/161 ,  H04B1/56

摘要： A transceiver circuit with a heterodyne receiver circuit is provided. Output signals of first and second local oscillator 103, 104 are mixed by a local frequency converter 105. An output signal of the converter 105 passes a filter 106 and inputs a modulator 111 of a transmitter circuit 101 as well as a first frequency converter 122 of a receiver circuit 102. The second local oscillator 104 comprises a frequency synthesizer whose output signal varies for a transmission or a receiving mode. The output signal of the second local oscillator 104 also inputs the second frequency converter 124 of the receiving mode. A reference frequency of the second local oscillator 104 is set higher than a frequency step between communication channels so that a quick switching of the frequency is performed. Thus, the transceiver circuit of this invention is suitable for a compact size and hardly generates unwanted spurious components at transmission mode.

摘要翻译： 提供了一种具有外差接收电路的收发电路。 第一和第二本地振荡器103,104的输出信号由本地变频器105混合。转换器105的输出信号通过滤波器106并输入发射机电路101的调制器111以及第一变频器122 接收机电路102.第二本地振荡器104包括频率合成器，其输出信号对于发射或接收模式而变化。 第二本地振荡器104的输出信号也输入接收模式的第二频率转换器124。 第二本地振荡器104的参考频率被设置为高于通信信道之间的频率步长，使得执行频率的快速切换。 因此，本发明的收发器电路适用于紧凑的尺寸，并且在传输模式下几乎不产生不想要的杂散分量。

公开(公告)号：US5872487A

公开(公告)日：1999-02-16

申请号：US869546

申请日：1997-06-05

申请人： Hisashi Adachi ,  Hiroaki Kosugi ,  Tomoki Uwano ,  Takeshi Miura ,  Youichi Morinaga

发明人： Hisashi Adachi ,  Hiroaki Kosugi ,  Tomoki Uwano ,  Takeshi Miura ,  Youichi Morinaga

IPC分类号： H03L7/183 ,  H03L7/087 ,  H03L7/107 ,  H03L7/197 ,  H04B1/04 ,  H03L7/18

CPC分类号： H03L7/1976 ,  H03L7/107

摘要： A frequency synthesizer that can switch an output frequency fast and generates little spurious output is provided. This frequency synthesizer comprises a phase locked loop including a voltage-controlled oscillator, a high frequency divider, a phase frequency comparator and a low-pass filter. The divisor controller circuit supplies a divisor that varies cyclically to the high frequency divider for a fractional dividing operation. When switching the output frequency, a passing bandwidth of the low-pass filter is enlarged to widen a loop bandwidth of the phase locking loop for fast switching. After switching, the passing bandwidth of the low-pass filter is reduced to narrow the loop bandwidth for reduction of a spurious output, at the timing when a predetermined period has passed for the switched output frequency to stabilize substantially.

摘要翻译： 提供可以快速切换输出频率并产生很少杂散输出的频率合成器。 该频率合成器包括一个包括压控振荡器，高分频器，相位频率比较器和低通滤波器的锁相环。 除数控制器电路提供一个与高分频器周期性变化的除数进行分数除法运算。 当切换输出频率时，放大低通滤波器的通带宽度，以加宽锁相环的环路带宽，实现快速切换。 在切换之后，在经过预定周期以使开关输出频率基本上稳定的定时，低通滤波器的通过带宽被减小以减小环路带宽以减少杂散输出。

公开(公告)号：US5369789A

公开(公告)日：1994-11-29

申请号：US188115

申请日：1994-01-28

申请人： Hiroaki Kosugi ,  Takayuki Matsumoto ,  Takashi Enoki

发明人： Hiroaki Kosugi ,  Takayuki Matsumoto ,  Takashi Enoki

IPC分类号： H04B1/04 ,  H03G3/20 ,  H04L27/36

CPC分类号： H03G3/3047 ,  H04L27/36

摘要： A power amplifier amplifies a modulated carrier signal having an amplitude modulation component and a phase modulation component to generate a transmission signal. Part of the transmission signal is extracted by a monitor circuit. The detection signal detected by an envelope detector is compared with a burst control signal by a differential amplifier. The resulting error signal is input to a gain control terminal of a power amplifier through a sample and hold circuit, thus forming a feed-back loop. The sample and hold circuit outputs a sample signal during the transmission signal ramping-up and ramping-down periods, thus effectively turning ON the feed-back loop to an ON to control the transmission signal ramping-up and ramping-down. The sample and hold circuit outputs the hold signal during a modulated data transmission period, effectively turning OFF the feedback loop. As a result, a burst transmission output with a stable transmission power level can be obtained.

摘要翻译： 功率放大器放大具有幅度调制分量和相位调制分量的调制载波信号，以产生发送信号。 传输信号的一部分由监视电路提取。 由包络检测器检测的检测信号通过差分放大器与脉冲串控制信号进行比较。 所得到的误差信号通过采样和保持电路输入到功率放大器的增益控制端，从而形成反馈回路。 采样保持电路在发送信号上升和下降周期期间输出采样信号，从而有效地将反馈回路导通到ON，以控制发送信号的上升和下降。 采样和保持电路在调制数据传输期间输出保持信号，有效地关闭反馈环路。 结果，可以获得具有稳定的发送功率电平的突发传输输出。