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    • 2. 发明授权
    • Portable wireless device
    • 便携式无线设备
    • US08489109B2
    • 2013-07-16
    • US12593889
    • 2008-03-28
    • Kenji WakuTadashi KoyamaKunihiko WatanabeMitsuhiro NishizonoKatsuji MorishitaTakeshi IwanagaDaisuke Togashi
    • Kenji WakuTadashi KoyamaKunihiko WatanabeMitsuhiro NishizonoKatsuji MorishitaTakeshi IwanagaDaisuke Togashi
    • H04W72/00H04B1/04
    • H01Q1/243H01Q7/00H04B1/006
    • A mobile wireless device enables effective use of space in a case while reducing degradation of antenna gain and maintaining communication quality even if a plurality of antennas having different frequency bands are arranged close to one another. A magnetic antenna has a first switch unit, a second switch unit, and a concentrated constant circuit which are added to a wiring pattern at the side near to a main antenna, so that a first path and a second path can be selected. Under a predetermined condition, a CPU controls the first switch and the second switch to electrically connect terminal (A1) to terminal (B1) and electrically connect terminal (A2) to terminal (B2), thereby forming the first path; and electrically connect terminal (A1) to terminal (C1) and electrically connect terminal (A2) to terminal (C2), thereby forming the second path connected via the concentrated constant circuit.
    • 即使具有不同频带的多个天线被布置成彼此靠近,移动无线设备也能够在减少天线增益的降级并保持通信质量的情况下有效利用空间。 磁性天线具有第一开关单元,第二开关单元和集中恒定电路,其被添加到靠近主天线的一侧的布线图案,使得可以选择第一路径和第二路径。 在预定条件下,CPU控制第一开关和第二开关以将端子(A1)电连接到端子(B1)并将端子(A2)电连接到端子(B2),从而形成第一路径; 并将端子(A1)电连接到端子(C1)并将端子(A2)电连接到端子(C2),从而形成通过集中恒定电路连接的第二路径。