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    • 91. 发明授权
    • GPS receiver sharing an antenna ground plane with an EMI shield
    • GPS接收机与EMI屏蔽共享天线接地层
    • US06522291B1
    • 2003-02-18
    • US09716451
    • 2000-11-21
    • Takahide NoguchiKatsuya YamamotoYuichiro NaoiKoji YamamotoHideki OkaHiroki Nishimoto
    • Takahide NoguchiKatsuya YamamotoYuichiro NaoiKoji YamamotoHideki OkaHiroki Nishimoto
    • H04B7185
    • H01Q23/00G01S19/36H01Q1/526H01Q9/0407
    • A compact GPS receiver includes a GPS antenna composed of a patch and a ground plane to receive high frequency satellite signals, an analog circuit which processes the high frequency satellite signals into a digital signal, a digital circuit which processes the digital signal to compute positional coordinates of the GPS antenna, and an interface connector which outputs the positional coordinates to an external device. A substrate is provided to support the GPS antenna, the analog circuit, the digital circuit, and the interface connector. An EMI (electromagnetic interference) shield is provided to shield at least the digital circuit to block a noise developing at the digital circuit from interfering with the GPS antenna. The GPS antenna is mounted on the EMI shield to share the ground plane with the EMI shield, while keeping the patch insulated electrically from the EMI shield. Thus, the GPS receiver can be made compact by making the use of the EMI shield also as the ground plane of the antenna, while assuring to block the noise from interfering with the antenna and affording sufficient antenna gain with the increased ground plane.
    • 紧凑型GPS接收机包括由贴片和接地平面组成的GPS天线以接收高频卫星信号,将高频卫星信号处理成数字信号的模拟电路,处理数字信号以计算位置坐标的数字电路 的GPS天线,以及将位置坐标输出到外部设备的接口连接器。 提供基板以支持GPS天线,模拟电路,数字电路和接口连接器。 提供EMI(电磁干扰)屏蔽以屏蔽至少数字电路以阻止在数字电路处产生的噪声干扰GPS天线。 GPS天线安装在EMI屏蔽层上,与EMI屏蔽共享接地层,同时保持贴片与EMI屏蔽电绝缘。 因此,通过将EMI屏蔽物也用作天线的接地平面,可以使GPS接收机紧凑化,同时确保阻止噪声干扰天线,并通过增加的接地平面提供足够的天线增益。
    • 92. 发明授权
    • Polyamide resin composition
    • 聚酰胺树脂组合物
    • US6166171A
    • 2000-12-26
    • US259611
    • 1999-03-01
    • Koji YamamotoMakoto TakahashiHisashi ShimazakiKatsuya Maruyama
    • Koji YamamotoMakoto TakahashiHisashi ShimazakiKatsuya Maruyama
    • C08G69/30C08G69/48C08K5/098C08K5/20C08G73/10B32B27/00C08L77/00
    • C08K5/098C08G69/30C08G69/48C08K5/20Y10T428/31725Y10T428/31728Y10T428/31732C08L77/00
    • A polyamide resin composition comprising 100 parts by weight of a polyamide resin and 0.005 to 1.0 part by weight of at least one compound selected from the group consisting of a metal salt of a fatty acid, a diamide compound and a diester compound. The polyamide resin is obtained by solid phase-polymerizing a polyamide resin prepared by melt-polymerizing a diamine component containing 70 mol % or more of metaxylylenediamine and a dicarboxylic acid component containing 70 mol % or more of adipic acid, and preferably has a relative viscosity of 2.3 to 4.2 when measured at 25.degree. C. using a solution of 1 g polyamide resin in 100 ml of 96% sulfuric acid. By adding at least one compound selected from the group consisting of the specific metal salt of fatty acid, the diamide compound and the diester compound to a solid phase-polymerized polyamide resin, shaped articles such as films, sheets and hollow containers made of the solid phase-polymerized polyamide are improved in the resistance to whitening during storage tinder a high humid condition, upon contacting with water or boiling water, or upon heating to a glass transition temperature or higher.
    • 一种聚酰胺树脂组合物,其包含100重量份的聚酰胺树脂和0.005-1.0重量份的至少一种选自脂肪酸的金属盐,二酰胺化合物和二酯化合物的化合物。 聚酰胺树脂通过使通过熔融聚合含有70摩尔%以上的间苯二甲胺的二胺成分和含有70摩尔%以上己二酸的二羧酸成分制备的聚酰胺树脂进行固相聚合而获得,优选具有相对粘度 在25℃下使用1g聚酰胺树脂在100ml 96%硫酸中的溶液测量为2.3至4.2。 通过将至少一种选自脂肪酸的特定金属盐,二酰胺化合物和二酯化合物的化合物的化合物加入到固相聚合的聚酰胺树脂中,成型制品如由固体制成的膜,片和中空容器 相变聚酰胺在储存期间抗白化性提高,在高湿度条件下,与水或沸水接触时,或加热至玻璃化转变温度或更高时。
    • 93. 发明授权
    • Propylene resin composition
    • 丙烯树脂组合物
    • US6087429A
    • 2000-07-11
    • US845208
    • 1997-04-21
    • Koji YamamotoKeiko ShichijoHajime Ikeno
    • Koji YamamotoKeiko ShichijoHajime Ikeno
    • C08L23/04C08L53/00C08J3/34
    • C08L53/00C08L23/04C08L2314/06
    • The present invention provides a propylene resin composition having an excellent balance between low-temperature impact resistance and rigidity, and which is suitable for automobile interior and exterior trim parts.The resin composition contains the following components A, B, and C:Component A: 50 to 80% by weight of a crystalline propylene-ethylene block copolymer having an ethylene content of 1 to 15% by weight, and a melt flow rate of 10 to 100 g/10 min.Component B: 5 to 40% by weight of an ethylene-.alpha.-olefin copolymer containing 25 to 70% by weight of an .alpha.-olefin having 4 to 18 carbon atoms, a melt flow rate of 0.01 to 7 g/10 min., and a density of 0.850 to 0.890 g/cm.sup.3Component C: 1 to 30% by weight of talc having an average particle size of 0.1 to 5.mu..
    • 本发明提供一种丙烯树脂组合物,其在低温冲击性和刚性之间具有优异的平衡性,并且适用于汽车内外饰件。 该树脂组合物含有以下成分A,B,C:成分A:乙烯含量为1〜15重量%,熔体流动速率10倍的结晶丙烯 - 乙烯嵌段共聚物的50〜80重量% 至100g / 10分钟。 组分B:5-40重量%的乙烯-α-烯烃共聚物,其含有25〜70重量%的碳原子数为4〜18的α-烯烃,熔体流动速率为0.01〜7g / 10分钟, 密度为0.850〜0.890g / cm 3成分C:平均粒径为0.1〜5μm的滑石为1〜30重量%。
    • 95. 发明授权
    • Mobile communication systems sharing a control channel
    • 移动通信系统共享一个控制通道
    • US5884165A
    • 1999-03-16
    • US601063
    • 1996-05-07
    • Noriko UchidaAkihiro MaebaraKatsumi KobayashiKoji YamamotoSyoichi HirataKazuo SugiyamaMasumi SotoyamaKoji Sasada
    • Noriko UchidaAkihiro MaebaraKatsumi KobayashiKoji YamamotoSyoichi HirataKazuo SugiyamaMasumi SotoyamaKoji Sasada
    • H04B7/26H04W48/12H04W88/06H04W88/10H04Q7/20
    • H04W48/12H04B7/26H04W88/06H04W88/10
    • In a mobile communication system, a data communication fixed station 3 and a voice communication fixed station 4 control a common service area, the connection between a mobile station 5 and the data communication fixed station 3 can be quickened. The data communication fixed station 3 notifies, sequentially, the voice communication fixed station 4 of channel informations (e.g., usable channels, traffic quantity). The voice communication fixed station 4 receives the channel information via a broadcast channel for voice communication, and broadcasts the channel information to the mobile stations. When the mobile station 5 is to execute packet communication with an ISDN 1 via the data communication fixed station 3, the mobile station 5 selects an appropriate channel among the channels broadcasted thereto, and notifies the data communication fixed station 3 of the selected channel. As such, since the mobile station 5 can determine the channel before the actual communication between the mobile station 5 and the data communication fixed station 3 takes place, the connection between the mobile station 5 and the data communication fixed station 3 can be quickened.
    • PCT No.PCT / JP95 / 02066 Sec。 371日期:1996年5月7日 102(e)日期1996年5月7日PCT提交1995年10月9日PCT公布。 公开号WO96 / 11552 日期1996年4月18日在移动通信系统中,数据通信固定站3和语音通信固定站4控制公共服务区域,可以加快移动站5与数据通信固定站3之间的连接。 数据通信固定站3顺序地通知语音通信固定站4的信道信息(例如,可用信道,业务量)。 语音通信固定站4通过用于语音通信的广播信道接收频道信息,并向频道广播频道信息。 当移动站5经由数据通信固定站3执行与ISDN 1的分组通信时,移动站5在广播的信道中选择适当的信道,并向数据通信固定站3通知所选择的信道。 这样,由于移动站5可以在进行移动站5和数据通信固定站3之间的实际通信之前确定信道,所以可以加快移动站5与数据通信固定站3之间的连接。