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    • 52. 发明公开
    • Frequency separator for use in dual-band mobile phone terminals
    • FrequenzweichefürZweiband-Mobilfunkendgeräte
    • EP1291956A1
    • 2003-03-12
    • EP02022889.6
    • 1997-02-20
    • HITACHI METALS, LTD.
    • Tai, HiroyukiTaketa, TsuyoshiTanaka, Toshihiko
    • H01P1/213
    • H01Q1/241H01P1/2135H03H7/463
    • A frequency separator used for a dual-band mobile phone terminal using two bands of f1 and f2 has a first notch circuit comprising a capacitor component (C1) and an inductance component (L1) passing a signal of the band f1 and a second notch circuit comprising a capacitor component (C2) and an inductance component (L2) passing a signal of the band f2. The first notch circuit is interposed between an antenna (T1) of the dual-band mobile phone and a communication circuit (T2) handling the signal of the band f1, the second notch circuit is interposed between an antenna (T1) of the dual-band mobile phone and a communication circuit (T3) handling the signal of the band f2. An end portion is formed by interconnecting the first notch and notch circuits is connected to the antenna side of the dual-band mobile phone for subjecting the signal input to branching to each of the communication circuit sides handling the respective signals of bands f1 and f2, thereby making it possible to select one band of the two bands of f1 and f2 and talk over the dual-band mobile phone.
    • 用于使用f1和f2的两个频带的双频手机终端的频率分离器具有包括电容器部件(C1)和通过频带f1的信号的电感分量(L1)的第一陷波电路和第二陷波电路 包括电容器组件(C2)和通过频带f2的信号的电感分量(L2)。 第一陷波电路插入在双频移动电话的天线(T1)和处理频带f1的信号的通信电路(T2)之间,第二陷波电路插在双频移动电话的天线(T1) 频带移动电话和处理频带f2的信号的通信电路(T3)。 通过互连第一陷波形成端部,并且陷波电路连接到双频带移动电话的天线侧,用于使信号输入分支到处理频带f1和f2的相应信号的每个通信电路侧, 从而使得可以选择f1和f2的两个频带中的一个频带并通过双频手机进行通话。
    • 56. 发明公开
    • SATELLITE APPARATUS WITH OMNIDIRECTIONAL AND MANUALLY STEERABLE DIRECTIONAL ANTENNA
    • 卫星电视台EINER RUNDSTRAHLENDEN ANTENNE UND EINER HANDSTEUERBAREN RICHTANTENNE
    • EP0981913A2
    • 2000-03-01
    • EP98920677.6
    • 1998-05-13
    • Inmarsat Ltd.
    • BROUGHTON, John, William
    • H04Q1/12H04B1/38H04B7/185
    • H01Q1/241H01Q1/24H01Q1/38H01Q21/28
    • A mobile satellite communications terminal (2) comprises a portable computer (68), an interface card (8) containing intermediate frequency (IF) conversion circuitry (28, 52), and an antenna assembly (10) including RF conversion circuitry (34, 50) and an antenna (44). The interface card (8) is connected to the antenna assembly (10) by a detachable cable (32), which carries IF signals. This arrangement reduces RF power losses and interference. The antenna (44) is manually steerable towards a geostationary or quasi-geostationary satellite (12). A navigation signal antenna (56) is mounted on the antenna assembly (10) and is steerable independently of the antenna (44) so as to be vertically aligned, which is the optimum position for receiving navigation signals. The antenna assembly (10) includes orientation sensors (70, 75) which allow the difference between the current and the correct orientation of the antenna (44) to be calculated. This difference is indicated to the user to assist manual steering of the antenna (44).
    • 移动卫星通信终端(2)包括便携式计算机(68),包含中频(IF)转换电路(28,52)的接口卡(8)和包括RF转换电路(34,52)的天线组件(10) 50)和天线(44)。 接口卡(8)通过携带IF信号的可拆卸电缆(32)连接到天线组件(10)。 这种布置降低了RF功率损耗和干扰。 天线(44)可手动地引向对地静止卫星或准对地静止卫星(12)。 导航信号天线(56)安装在天线组件(10)上,并且独立于天线(44)被引导以便垂直对齐,这是用于接收导航信号的最佳位置。 天线组件(10)包括方位传感器(70,75),其允许计算天线(44)的电流和正确取向之间的差异。 用户指示这种差异来辅助天线(44)的手动转向。