发明名称 |
Wristwatch type cellular phone |
摘要 |
A plurality of plane antennas 6 - 1 and 6 - 2 are embedded in the equipment body section 1 , and every time occurrence of reception failure is detected by the internal electronics circuit, switching between the antennas used is established. Spatial diversity through selectively switching and using the plurality of plane antennas 6 - 1 and 6 - 2 is performed. Through this, even when reception sensitivity of one antenna in use deteriorates, good reception sensitivity can be gained through switching to another antenna. Thus, this can avoid inconvenience where calls are cut off.
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申请公布号 |
US7280844(B2) |
申请公布日期 |
2007.10.09 |
申请号 |
US20040710529 |
申请日期 |
2004.07.19 |
申请人 |
NIIGATA SEIMITSU CO., LTD. |
发明人 |
IKEDA TAKESHI;OKAMOTO AKIRA |
分类号 |
H01Q3/24;H04M1/00;H01Q1/44;H04B1/38;H04B7/26;H04M1/02;H04M1/725;H04Q7/32 |
主分类号 |
H01Q3/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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