专利内容由知识产权出版社提供
专利名称：Antenna device发明人：Hiroshi Fujikawa申请号：US09431693申请日：19991101公开号：US06232925B1公开日：20010515
专利附图：
摘要：The present invention is for providing an antenna device in a portable radio,capable of transmitting and receiving in frequency bands used in two differentcommunication systems without the performance irregularity even in the case of themass production. By having the inductance per unit length along the elongating direction
of the upper antenna element larger than that of the lower antenna element, the entireantenna element is resonated at a first frequency fas a quarter wave ground antennaelement and is also resonated at a second frequency flower than the frequency threetimes as much as the first frequency fas a three quarter wave ground antenna. Since theantenna element is formed with an antenna pattern printed on a printed wiring board,antenna elements with the same shape can be obtained, and thus the antenna
performance irregularity cannot be generated even in the case of the mass production.
申请人：SMK CORPORATION
代理机构：Pearne & Gordon LLP
更多信息请下载全文后查看
