公开(公告)号：US5770970A

公开(公告)日：1998-06-23

申请号：US705244

申请日：1996-08-30

申请人： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

发明人： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

IPC分类号： H03F3/24 ,  H03F3/21 ,  H03F3/60 ,  H04B1/04 ,  H03F3/68

CPC分类号： H03F3/211 ,  H03F3/604

摘要： The output of a digital modulator is put into a power amplifying device, is distributed into n pieces in an n-power divider in the power amplifier, passes through n input phase shifters differing individually in the phase change amount, is amplified by n power amplifiers, passes through n output phase shifters to match the phase of n signals, is combined in an n-power combiner, and is issued from an output terminal to a phase shifter, and the output of the phase shifter is issued to a transmission antenna. Herein, the phase value of the phase shifter is determined so as to extend the region of the output load impedance for satisfying the specific value of unwanted radiation, and so that the output load impedance range of the load impedance of the power amplifier may be optimize to the impedance change range of the trans missionantenna, thereby eliminating the isolator and presenting a transmitting device of a portable wireless system realizing smaller size, higher performance, and lower cost of portable wireless system.

公开(公告)号：US5901345A

公开(公告)日：1999-05-04

申请号：US056446

申请日：1998-04-06

申请人： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

发明人： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

IPC分类号： H03F3/24 ,  H03F3/21 ,  H03F3/60 ,  H04B1/04 ,  H03F3/68

CPC分类号： H03F3/211 ,  H03F3/604

摘要： The output of a digital modulator is put into a power amplifying device, is distributed into n pieces in an n-power divider in the power amplifier, passes through n input phase shifters differing individually in the phase change amount, is amplified by n power amplifiers, passes through n output phase shifters to match the phase of n signals, is combined in an n-power combiner, and is issued from an output terminal to a phase shifter, and the output of the phase shifter is issued to a transmission antenna. Herein, the phase value of the phase shifter is determined so as to extend the region of the output load impedance for satisfying the specific value of unwanted radiation, and so that the output load impedance range of the load impedance of the power amplifier may be optimize to the impedance change range of the trans missionantenna, thereby eliminating the isolator and presenting a transmitting device of a portable wireless system realizing smaller size, higher performance, and lower cost of portable wireless system.

摘要翻译： 数字调制器的输出放入功率放大装置中，在功率放大器的n功率分配器中分配成n个片段，通过相位变化量不同的n个输入移相器，由n个功率放大器 ，通过n个输出移相器以匹配n个信号的相位，被组合在n个功率组合器中，并且从输出端子发送到移相器，并且将移相器的输出发送到发送天线。 这里，确定移相器的相位值，以便扩大输出负载阻抗的区域以满足不需要的辐射的特定值，并且使得功率放大器的负载阻抗的输出负载阻抗范围可以被优化 到传输天线的阻抗变化范围，从而消除了隔离器并呈现便携式无线系统的发送装置，实现便携式无线系统的更小的尺寸，更高的性能和更低的成本。

公开(公告)号：US5852384A

公开(公告)日：1998-12-22

申请号：US844039

申请日：1997-04-18

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

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

IPC分类号： H03B5/18 ,  H03B5/12

CPC分类号： H03B5/1847

摘要： 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.

摘要翻译： 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：US07400216B2

公开(公告)日：2008-07-15

申请号：US10563786

申请日：2004-07-28

申请人： Nobuo Fuse

发明人： Nobuo Fuse

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/0576 ,  H03H9/02913 ,  H03H9/6483 ,  H03H9/725

摘要： A surface acoustic wave device has a structure in which a surface acoustic wave element (11), provided with two kinds of surface acoustic wave filter structures having different center frequencies on the same piezoelectric substrate (12), is disposed on a package (16). The surface acoustic wave element (11) comprises a first filter structure (13) having a first center frequency, a second filter structure (14) having a second center frequency and a shield electrode (15) between the first filter structure (13) and the second filter structure (14). The shield electrode (15) is connected to an earth terminal (181) of the package (16) to be grounded. According to the structure, electromagnetic shielding between the first filter structure (13) and the second filter structure (14) can be performed, therefore, the isolation property therebetween can be improved and the surface acoustic wave device can be miniaturized.

摘要翻译： 声表面波装置具有在同一压电基板（12）上设置具有不同中心频率的两种声表面波滤波器结构的表面声波元件（11）设置在封装（16）上的结构， 。 表面声波元件（11）包括具有第一中心频率的第一滤波器结构（13），具有第二中心频率的第二滤波器结构（14）和在第一滤波器结构（13）和 第二过滤器结构（14）。 屏蔽电极（15）连接到封装（16）的接地端子（181）以接地。 根据该结构，可以进行第一滤波器结构（13）和第二滤波器结构（14）之间的电磁屏蔽，因此可以提高其间的隔离性能，并且可以使声表面波装置小型化。

公开(公告)号：US20060197630A1

公开(公告)日：2006-09-07

申请号：US10563786

申请日：2004-07-28

申请人： Nobuo Fuse

发明人： Nobuo Fuse

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/0576 ,  H03H9/02913 ,  H03H9/6483 ,  H03H9/725

摘要： A surface acoustic wave device has a structure in which a surface acoustic wave element (11) provided with two kinds of surface acoustic wave filter structures having different center frequencies on the same piezoelectric substrate (12) is disposed on a package (16). The surface acoustic wave element (11) comprises a first filter structure (13) having a first center frequency, a second filter structure (14) having a second center frequency and a shield electrode (15) between the first filter structure (13) and the second filter structure (14), in which the shield electrode (15) is connected to an earth terminal (181) of the package (16) to be grounded. According to the structure, electromagnetic shielding between the first filter structure (13) and the second filter structure (14) can be performed, therefore, the isolation property therebetween can be improved and the surface acoustic wave device can be miniaturized.

摘要翻译： 声表面波装置具有在同一压电基板（12）上设置具有不同中心频率的两种表面声波滤波器结构的表面声波元件（11）布置在封装（16）上的结构。 表面声波元件（11）包括具有第一中心频率的第一滤波器结构（13），具有第二中心频率的第二滤波器结构（14）和在第一滤波器结构（13）和 所述第二滤波器结构（14），其中所述屏蔽电极（15）连接到所述封装（16）的接地端子（181）以接地。 根据该结构，可以进行第一滤波器结构（13）和第二滤波器结构（14）之间的电磁屏蔽，因此可以提高其间的隔离性能，并且可以使声表面波装置小型化。