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公开(公告)号：EP1243052A1
公开(公告)日：2002-09-25
申请号：EP00975090.2
申请日：2000-10-24
IPC分类号： H01Q1/24
摘要： An antenna device for transmitting and/or receiving RF radiation, installable in and connectable to a radio communication device, and comprising an antenna structure (5-9, 11, 13, 35, 61) switchable between a plurality of antenna configuration states, each of which is distinguished by a set of radiation parameters, such as resonance frequency, input impedance, bandwidth, radiation pattern, gain, polarization, and near-field pattern, and a switching device (4, 36, 60) for selectively switching said antenna structure between said plurality of antenna configuration states, wherein each of said plurality of antenna configuration states being adapted for use of the antenna device in said radio communication device in a respective predefined physical operation environment (TP, FS, WP, PP), is disclosed.
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2.发明公开
公开(公告)号：EP1243051A1
公开(公告)日：2002-09-25
申请号：EP00975089.4
申请日：2000-10-24
摘要： The present invention comprises an antenna device (1) for transmitting and receiving radio frequency waves, installable in a radio communication device, and comprising an antenna structure (12, 13, 35, 61, 82-85, 87, 89, 91, 92) switchable between a plurality of configuration states, each of which is distinguished by a set of radiation parameters, such as resonance frequency, input impedance, bandwidth, radiation pattern, gain, polarization, and near-field pattern, and a switching device (11, 14, 36, 81) for selectively switching said antenna structure between said plurality of antenna configuration states. The device comprises first and second means for receiving first and second measured operation parameter indicative of the quality of transmission of radio frequency waves by said antenna structure and a control device (22) for controlling said switching device, and thus the selective switching of said antenna structure in dependence on said received first and second measured operation parameters, so as to improve the quality of said transmission and/or said reception.
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