公开(公告)号：US20090090607A1

公开(公告)日：2009-04-09

申请号：US12158163

申请日：2006-06-06

申请人： Yohei Ichikawa ,  Kiyoshi Nakanishi

发明人： Yohei Ichikawa ,  Kiyoshi Nakanishi

IPC分类号： H01H13/14

CPC分类号： H01H9/52 ,  H01H13/704 ,  H01H2205/026 ,  H01H2205/03 ,  H01H2209/002 ,  H01H2209/014 ,  H01H2221/002 ,  H01H2231/022 ,  H01H2239/008 ,  H01H2239/072

摘要： To prevent the local heating of an electronic apparatus chassis, there is provided a push button switch (10), which comprises a substrate (11) having a first contacting part (11a) and a second contacting part (11b) operable to be brought into electrical conduction with the first contacting part (11a), and a flexible electrically insulating sheet (13) covering the substrate (11) and having a click portion (13a) on the inside of which the first and second contacting parts are disposed to be brought into and out of electrical conduction therebetween in response to depression of the click portion. The electrically insulating sheet (13) includes a heat conducting layer (14) extending along the substrate (11).

摘要翻译： 为了防止电子设备底盘的局部加热，提供了一种按钮开关（10），其包括具有第一接触部分（11a）和第二接触部分（11b）的基板（11），可操作地被引入 与第一接触部分（11a）的导电，以及覆盖基板（11）的柔性电绝缘片（13），并且在其内部设置有第一和第二接触部分被设置的点击部分（13a） 响应于点击部分的按压而进入和离开它们之间的电传导。 电绝缘片（13）包括沿衬底（11）延伸的导热层（14）。

公开(公告)号：US08071902B2

公开(公告)日：2011-12-06

申请号：US12158163

申请日：2006-06-06

申请人： Yohei Ichikawa ,  Kiyoshi Nakanishi

发明人： Yohei Ichikawa ,  Kiyoshi Nakanishi

IPC分类号： H01H13/14 ,  H01H3/12

CPC分类号： H01H9/52 ,  H01H13/704 ,  H01H2205/026 ,  H01H2205/03 ,  H01H2209/002 ,  H01H2209/014 ,  H01H2221/002 ,  H01H2231/022 ,  H01H2239/008 ,  H01H2239/072

摘要： To prevent the local heating of an electronic apparatus chassis, there is provided a push button switch (10), which comprises a substrate (11) having a first contacting part (11a) and a second contacting part (11b) operable to be brought into electrical conduction with the first contacting part (11a), and a flexible electrically insulating sheet (13) covering the substrate (11) and having a click portion (13a) on the inside of which the first and second contacting parts are disposed to be brought into and out of electrical conduction therebetween in response to depression of the click portion. The electrically insulating sheet (13) includes a heat conducting layer (14) extending along the substrate (11).

摘要翻译： 为了防止电子设备底盘的局部加热，提供了一种按钮开关（10），其包括具有第一接触部分（11a）和第二接触部分（11b）的基板（11），可操作地被引入 与第一接触部分（11a）的导电，以及覆盖基板（11）的柔性电绝缘片（13），并且在其内部设置有第一和第二接触部分被设置的点击部分（13a） 响应于点击部分的按压而进入和离开它们之间的电传导。 电绝缘片（13）包括沿衬底（11）延伸的导热层（14）。

公开(公告)号：US20100101927A1

公开(公告)日：2010-04-29

申请号：US12525757

申请日：2007-02-05

申请人： Yohei Ichikawa

发明人： Yohei Ichikawa

IPC分类号： H01H1/10 ,  H01H13/14 ,  B32B3/00

CPC分类号： H01H13/704 ,  H01H9/52 ,  H01H2209/068 ,  H01H2217/016 ,  H01H2239/072 ,  Y10T428/163 ,  Y10T428/23 ,  Y10T428/24331 ,  Y10T428/24612

摘要： It is an object of the present invention to provide a key sheet and the like which can suppress local elevation of temperature, and effectively diffuse heat loss from electronic circuits. The key sheet includes: a viscoelastic sheet 16b having a viscoelastic property, and having a first surface and a second surface; a button section 16a located on the side of the first surface of the viscoelastic sheet 16b; a thermally-conductive sheet 14 located along the first surface or the second surface of the viscoelastic sheet 16b, the thermally-conductive sheet 14 having a thermal conductivity equal to a specific value; and a contact section 16d projected from the second surface of the viscoelastic sheet 16b, the contact section occupies a position corresponding to the button section 16a.

摘要翻译： 本发明的目的是提供一种能够抑制局部温度升高的按键板等，并有效地扩散电子电路的热损失。 钥匙片包括：具有粘弹性的粘弹性片16b，并具有第一表面和第二表面; 位于粘弹片16b的第一表面侧的钮扣部分16a; 位于粘弹性片16b的第一表面或第二表面的导热片14，导热片14具有等于特定值的导热性; 以及从粘弹片16b的第二面突出的接触部16d，接触部占据与按钮部16a对应的位置。

公开(公告)号：US5990736A

公开(公告)日：1999-11-23

申请号：US073831

申请日：1998-05-06

申请人： Isao Nasuno ,  Yohei Ichikawa

发明人： Isao Nasuno ,  Yohei Ichikawa

IPC分类号： H05K3/46 ,  H01L27/01 ,  H03F3/189 ,  H03F3/193 ,  H05K1/02 ,  H05K9/00 ,  H03F3/60

CPC分类号： H05K1/0218 ,  H03F3/193 ,  H05K9/0039

摘要： A high frequency power amplifier including: a multi-layer printed-circuit board, a transistor for amplifying an input signal and outputting the amplified signal, a first print circuit pattern for receiving the input signal and supplying the input signal to the transistor, a second print circuit pattern for supplying a supply voltage to the transistor, a ground terminal, and concentrated constant elements connected to the transistor on the multi-layer printed-circuit board is disclosed, wherein at least two layers of the multi-layer printed-circuit board are connected to the ground terminal, the first and second print circuit patterns are sandwiched on one layer of the multi-layer print circuit between the at least two layers, a first shielding circuit pattern, connected to the ground terminal, arranged around the first print circuit pattern on the one layer is further provided; and a second shielding circuit pattern, connected to the ground terminal, arranged around the second print circuit pattern on the one layer is further provided to provide isolation. Connection between the grounded layers or the first and second shielding circuit patterns and the ground terminal is provided with through holes or via holes. A transmission apparatus including the high frequency power amplifier is also disclosed.

摘要翻译： 一种高频功率放大器，包括：多层印刷电路板，用于放大输入信号并输出​​放大信号的晶体管，用于接收输入信号并将输入信号提供给晶体管的第一印刷电路图案，第二 公开了用于向晶体管提供电源电压的印刷电路图案，接地端子和连接到多层印刷电路板上的晶体管的集中恒定元件，其中至少两层多层印刷电路板 连接到接地端子，第一和第二印刷电路图案被夹在至少两层之间的多层印刷电路的一层上，连接到接地端子的第一屏蔽电路图案围绕第一印刷件布置 进一步提供一层电路图案; 并且还设置连接到接地端子的第二屏蔽电路图案，其围绕第一印刷电路图案布置在一层上以提供隔离。 接地层或第一和第二屏蔽电路图案与接地端子之间的连接设置有通孔或通孔。 还公开了包括高频功率放大器的发送装置。

公开(公告)号：US07978467B2

公开(公告)日：2011-07-12

申请号：US12525757

申请日：2007-02-05

申请人： Yohei Ichikawa

发明人： Yohei Ichikawa

IPC分类号： H05K7/20 ,  H01H3/12

CPC分类号： H01H13/704 ,  H01H9/52 ,  H01H2209/068 ,  H01H2217/016 ,  H01H2239/072 ,  Y10T428/163 ,  Y10T428/23 ,  Y10T428/24331 ,  Y10T428/24612

摘要： It is an object of the present invention to provide a key sheet and the like which can suppress local elevation of temperature, and effectively diffuse heat loss from electronic circuits. The key sheet includes: a viscoelastic sheet 16b having a viscoelastic property, and having a first surface and a second surface; a button section 16a located on the side of the first surface of the viscoelastic sheet 16b; a thermally-conductive sheet 14 located along the first surface or the second surface of the viscoelastic sheet 16b, the thermally-conductive sheet 14 having a thermal conductivity equal to a specific value; and a contact section 16d projected from the second surface of the viscoelastic sheet 16b, the contact section occupies a position corresponding to the button section 16a.

摘要翻译： 本发明的目的是提供一种能够抑制局部温度升高的按键板等，并有效地扩散电子电路的热损失。 钥匙片包括：具有粘弹性的粘弹性片16b，并具有第一表面和第二表面; 位于粘弹片16b的第一表面侧的钮扣部分16a; 位于粘弹性片16b的第一表面或第二表面的导热片14，导热片14具有等于特定值的导热性; 以及从粘弹片16b的第二面突出的接触部16d，接触部占据与按钮部16a对应的位置。

公开(公告)号：US5986503A

公开(公告)日：1999-11-16

申请号：US66778

申请日：1998-04-27

申请人： Yohei Ichikawa

发明人： Yohei Ichikawa

IPC分类号： H03F3/60 ,  H03F1/30 ,  H03F3/193 ,  H03F3/16 ,  H03F3/04

CPC分类号： H03F3/1935 ,  H03F1/30 ,  H03F1/306 ,  H03F2200/411

摘要： A power amplifier including an FET and a gate bias circuit having a variable resistor (VR) and a method of trimming the VR in the power amplifier are disclosed. The VR is trimmed to make the bias voltage to a pinch-off voltage of the FET. A first current in the pinch-off voltage condition from a bias supply voltage is measured. The VR is adjusted with a second current from the bias supply voltage measured. A difference between the first and second drain current values is calculated and a resistance of the VR is determined to make the difference within a reference. A second VR may be connected to the VR in parallel to make trimming the bias voltage easier or more accurately. The second VR may comprise a printed circuit pattern which shows 0.OMEGA. for the pinch-off condition and the printed circuit pattern also provides the infinite resistance when it is cut to adjust the VR. Another power amplifier including a memory and a D/A converter for generating the gate bias voltage is also disclosed. The memory stores data making the FET in the pinch-off condition to measure the first current, a set of data varying the second current to adjust the VR and can store the data making the difference within the predetermined value. In the case of multi-stage, trimming is performed from one of stages of which reference is smallest.

摘要翻译： 公开了一种包括FET和具有可变电阻器（VR）的栅极偏置电路的功率放大器和在功率放大器中修整VR的方法。 对VR进行调整，使偏置电压为FET的截止电压。 从偏置电源电压测量夹断电压条件下的第一电流。 从测量的偏置电源电压用第二个电流调节VR。 计算第一和第二漏极电流值之间的差异，并且确定VR的电阻以使参考中的差异。 第二VR可以并联连接到VR，以便更容易或更准确地修整偏置电压。 第二VR可以包括印刷电路图案，其针对夹断条件显示0欧米茄，并且印刷电路图案在切割时还提供无限电阻以调节VR。 还公开了包括用于产生栅极偏置电压的存储器和D / A转换器的另一功率放大器。 存储器存储使得FET处于夹断状态的数据以测量第一电流，一组数据改变第二电流以调整VR并且可以将使差异的数据存储在预定值内。 在多级的情况下，从参考最小的一个阶段执行修整。