公开(公告)号：US07126545B2

公开(公告)日：2006-10-24

申请号：US10504667

申请日：2003-02-14

申请人： Kenya Nagano ,  Tadashi Oga

发明人： Kenya Nagano ,  Tadashi Oga

IPC分类号： H01Q1/24

CPC分类号： H01Q9/16 ,  H01Q1/242 ,  H01Q1/243 ,  H01Q1/36 ,  H01Q9/04 ,  H01Q19/005 ,  H01Q19/30

摘要： A subject of the present invention is to provide an antenna unit and a portable radio device capable of attaining a wider bandwidth and a lower SAR.In the present invention, an antenna element (12) that has an effective length corresponding to a half wavelength of a transmitting frequency and a parasitic element (13) that has an effective length corresponding to a half wavelength of a receiving frequency are provided, an antenna current is induced in the antenna element (12) at the transmitting frequency upon transmitting a radio wave in a predetermined transmitting frequency band, and another antenna current is induced in the parasitic element (13) by a spatial coupling between the antenna element (12) and the parasitic element (13) at the receiving frequency upon receiving the radio wave in a predetermined receiving frequency band, whereby peak points in an antenna current distribution are scattered into two points. Accordingly, a wider bandwidth can be obtained without addition of a matching circuit and also expansion of a parts packaging space on a board and reduction in the number of packaged parts can be achieved.

摘要翻译： 本发明的主题是提供能够获得更宽带宽和更低SAR的天线单元和便携式无线电设备。 在本发明中，提供了具有对应于发射频率的半波长的有效长度的天线元件（12）和具有与接收频率的半波长对应的有效长度的寄生元件（13）， 在发送无线电波在预定发射频带中的天线元件（12）中以天线元件（12）感应天线电流，并且通过天线元件（12）之间的空间耦合在寄生元件（13）中感应出另一个天线电流 ）和寄生元件（13）在接收频率处接收到预定接收频带中的无线电波，由此将天线电流分布中的峰值点分散成两点。 因此，可以在不添加匹配电路的情况下获得更宽的带宽，并且还可以实现板上的部件封装空间的扩展，并且可以实现封装部件的数量的减少。

公开(公告)号：US20060017624A1

公开(公告)日：2006-01-26

申请号：US10504667

申请日：2003-02-14

申请人： Kenya Nagano ,  Tadashi Oga

发明人： Kenya Nagano ,  Tadashi Oga

IPC分类号： H01Q1/24

CPC分类号： H01Q9/16 ,  H01Q1/242 ,  H01Q1/243 ,  H01Q1/36 ,  H01Q9/04 ,  H01Q19/005 ,  H01Q19/30

摘要： A subject of the present invention is to provide an antenna unit and a portable radio device capable of attaining a wider bandwidth and a lower SAR. In the present invention, an antenna element (12) that has an effective length corresponding to a half wavelength of a transmitting frequency and a parasitic element (13) that has an effective length corresponding to a half wavelength of a receiving frequency are provided, an antenna current is induced in the antenna element (12) at the transmitting frequency upon transmitting a radio wave in a predetermined transmitting frequency band, and another antenna current is induced in the parasitic element (13) by a spatial coupling between the antenna element (12) and the parasitic element (13) at the receiving frequency upon receiving the radio wave in a predetermined receiving frequency band, whereby peak points in an antenna current distribution are scattered into two points. Accordingly, a wider bandwidth can be obtained without addition of a matching circuit and also expansion of a parts packaging space on a board and reduction in the number of packaged parts can be achieved.

公开(公告)号：US20110267239A1

公开(公告)日：2011-11-03

申请号：US13143283

申请日：2009-11-20

申请人： Nobuharu Mashima ,  Tadashi Oga ,  Shoichi Kajiwara ,  Kiyoshi Nakanishi

发明人： Nobuharu Mashima ,  Tadashi Oga ,  Shoichi Kajiwara ,  Kiyoshi Nakanishi

IPC分类号： H01Q1/24

CPC分类号： H01Q1/243 ,  H01Q1/245 ,  H01Q17/00 ,  H04B1/3838

摘要： A portable radio device includes: a housing made of non-conductor having a first permittivity; a circuit board disposed in the housing; a radio circuit disposed on the circuit board; an antenna element connected to the radio circuit; and a dielectric body. The dielectric body is disposed substantially in a center of the housing in a lateral direction thereof and has a second permittivity higher than the first permittivity.

摘要翻译： 便携式无线电设备包括：具有第一介电常数的由非导体制成的壳体; 布置在壳体中的电路板; 设置在所述电路板上的无线电电路; 连接到无线电电路的天线元件; 和电介质体。 电介质体大致位于壳体的横向方向的中心，并且具有高于第一介电常数的第二介电常数。

公开(公告)号：US06240147B1

公开(公告)日：2001-05-29

申请号：US09097290

申请日：1998-06-12

申请人： Yoshihito Muramatsu ,  Tadashi Oga

发明人： Yoshihito Muramatsu ,  Tadashi Oga

IPC分类号： H04L2706

CPC分类号： H04L27/2272 ,  H04L2027/003 ,  H04L2027/0055 ,  H04L2027/0065 ,  H04L2027/0073

摘要： An auto frequency control apparatus arranged to vary the division ratio of the comparison signal portion in the phase comparator with the AFC control voltage so as to change the frequency in order to make coincide the frequency of the output signal from a local oscillation portion and that of a carrier-wave signal for a frequency-shift keying signal with each other. The frequency of an output signal from a reference-signal generating portion is divided by a divider 213. The frequency of the output signal from a local oscillation portion is supplied to an auto frequency control 202. A control-signal processing portion 207 receives AFC control voltage to instruct an updown counter 205 to correct the division to correspond to the voltage. In accordance with the instruction, a counter 203 divides the supplied signal, the signal being multiplied with an integer in a multiplier 204 so as to be transmitted. The output signal is divided with a division ratio set by a divider 209. A phase comparator 214 detects the phase difference between the two output signals from the dividers 209 and 213 so as to transmit the phase difference to a voltage control oscillator provided for the local oscillation portion through a charge pump 215. Thus, the frequency of the local oscillation portion is varied.

摘要翻译： 一种自动频率控制装置，被配置为改变相位比较器中的比较信号部分与AFC控制电压的分频比，以便改变频率，以使来自本地振荡部分的输出信号的频率与 用于频移键控信号的载波信号。 来自参考信号产生部分的输出信号的频率由分频器213分频。来自本地振荡部分的输出信号的频率被提供给自动频率控制202.控制信号处理部分207接收AFC控制 电压以指示升降计数器205将该分频校正为对应于该电压。 根据该指令，计数器203将所提供的信号进行分频，该信号在乘法器204中被乘以整数，以便被发送。 输出信号由分频器209设定的分频比进行分频。相位比较器214检测来自分频器209和213的两个输出信号之间的相位差，以将相位差发送到为本地设置的电压控制振荡器 振荡部分通过电荷泵215.因此，本地振荡部分的频率是变化的。