公开(公告)号：US20070182634A1

公开(公告)日：2007-08-09

申请号：US10577685

申请日：2004-10-28

申请人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Koichi Ogawa ,  Shotaro Nishimura ,  Hirotaka Ishihara

发明人： Atsushi Yamamoto ,  Hiroshi Iwai ,  Koichi Ogawa ,  Shotaro Nishimura ,  Hirotaka Ishihara

IPC分类号： H01Q1/38

CPC分类号： H01Q3/242 ,  H01Q3/28 ,  H01Q3/36 ,  H01Q13/06 ,  H01Q21/205

摘要： Four antenna units arranged adjacent to each other are respectively connected to switches, and are connected to load impedance elements via the switches, or connected to an output terminal and a comparator via a switch. Another ends of the load impedance elements are grounded. The comparator judges which antenna unit receives a radio signal having the maximum signal level among the antenna units. A controller controls the switches and the switch so that the antenna unit that receives the radio communication signal having the maximum signal level is connected to the output terminal and the other antenna units are connected to the load impedance elements.

摘要翻译： 彼此相邻布置的四个天线单元分别连接到开关，并且经由开关连接到负载阻抗元件，或者经由开关连接到输出端子和比较器。 负载阻抗元件的另一端接地。 比较器判断哪个天线单元在天线单元中接收到具有最大信号电平的无线电信号。 控制器控制开关和开关，使得接收具有最大信号电平的无线电通信信号的天线单元连接到输出端，而其它天线单元连接到负载阻抗元件。

公开(公告)号：US06985113B2

公开(公告)日：2006-01-10

申请号：US10824347

申请日：2004-04-15

申请人： Shotaro Nishimura ,  Atsushi Yamamoto ,  Koichi Ogawa ,  Hiroshi Iwai

发明人： Shotaro Nishimura ,  Atsushi Yamamoto ,  Koichi Ogawa ,  Hiroshi Iwai

IPC分类号： H01Q1/24

CPC分类号： H04B1/3838 ,  H01Q1/245 ,  H01Q3/44 ,  H01Q19/26 ,  H01Q21/29

摘要： A radio antenna apparatus is provided with an antenna connected with a radio communication circuit that transmits and receives a radio signal. A load impedance element is connected between a parasitic element of an electrical conductor plate and a ground of a housing of a radio communication apparatus including the radio communication circuit. A controller controls an element value of the load impedance element so as to set a current flowing on the housing to be equal to or smaller than a predetermined value when the radio communication apparatus transmits the radio signal, thereby controlling a specific absorption rate (SAR) to be equal to or smaller than a predetermined value.

摘要翻译： 无线电天线装置设置有与发送和接收无线电信号的无线电通信电路连接的天线。 负载阻抗元件连接在电导体板的寄生元件和包括无线电通信电路的无线电通信设备的外壳的接地之间。 当无线电通信装置发送无线电信号时，控制器控制负载阻抗元件的元件值，以便将在壳体上流动的电流设置为等于或小于预定值，从而控制特定吸收率（SAR） 等于或小于预定值。