公开(公告)号：US06873299B2

公开(公告)日：2005-03-29

申请号：US10468298

申请日：2002-12-19

申请人： Yujiro Dakeya ,  Shinji Matsutaka

发明人： Yujiro Dakeya ,  Shinji Matsutaka

IPC分类号： H01P1/20 ,  H01Q5/10 ,  H01Q5/307 ,  H01Q5/335 ,  H01Q9/30 ,  H01Q21/30 ,  H04B1/04 ,  H04B1/18 ,  H01Q9/00

CPC分类号： H04B1/0458 ,  H01Q5/335 ,  H01Q21/30 ,  H03H2007/386 ,  H04B1/005 ,  H04B1/0057

摘要： A multi-resonant antenna device includes an antenna element and an LC parallel resonance circuit making the antenna element resonate in a plurality of frequency bands, and the LC parallel resonance circuit includes a T-type circuit or PI-type circuit including an inductance element, acting as a shunt element, and capacitance elements, which prevent the impedance from becoming infinite in a certain frequency band. In this way, a drop, that is, a notch portion, in the frequency characteristic causing deterioration of the gain can be eliminated.

摘要翻译： 多谐振天线装置包括天线元件和LC并联谐振电路，使得天线元件以多个频带谐振，并联LC并联谐振电路包括T型电路或包括电感元件的PI型电路， 作为分流元件，以及电容元件，其阻止在一定频带内阻抗变得无限大。 以这种方式，可以消除引起增益劣化的频率特性中的下降，即切口部分。