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公开(公告)号：US20100003941A1
公开(公告)日：2010-01-07
申请号：US12374623
申请日：2006-07-21
申请人： Suguru Kojima
发明人： Suguru Kojima
CPC分类号： H04B1/48 , H04B7/0608 , H04B7/0814 , H04B7/082 , H04B7/12
摘要： A transmitting/receiving circuit (17) holds a communication at a frequency f1 by using an antenna (11a) or an antenna (11b), and a transmitting/receiving circuit (3) holds a communication at a frequency f2 by using an antenna (1). In response to a receiving signal intensity, a switching circuit (14) connects any one of the antennas (11a),(11b) to the transmitting/receiving circuit (17) as a selected antenna for use in communication, and connects the other antenna to a terminating circuit (13) as a non-selected antenna. The terminating circuit (13) connected to the non-selected antenna has an impedance that satisfies a predetermined phase condition at the frequencies f1, f2 respectively, suppresses an inter-antenna coupling between the non-selected antenna and the selected antenna and the antenna (1), and suppresses degradation in antenna characteristic caused due to the inter-antenna coupling between the selected antenna and the antenna (1).
摘要翻译： 发送/接收电路（17）通过使用天线（11a）或天线（11b）保持频率f1的通信，并且发送/接收电路（3）通过使用天线（3）保持频率f2的通信 1）。 响应于接收信号强度，切换电路（14）将天线（11a），（11b）中的任一个连接到发送/接收电路（17），作为选择的天线用于通信，并且将另一个天线 作为未选择天线的终端电路（13）。 连接到未选择的天线的终端电路（13）具有分别满足频率f1，f2的预定相位条件的阻抗，抑制非选择天线与所选择的天线和天线之间的天线间耦合（ 1），并且抑制由于所选择的天线和天线（1）之间的天线间耦合引起的天线特性的劣化。
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公开(公告)号：US20200059006A1
公开(公告)日：2020-02-20
申请号：US16664963
申请日：2019-10-28
申请人： Suguru KOJIMA
发明人： Suguru KOJIMA
摘要： An antenna apparatus having directivity includes an antenna portion having a power feeding portion, a plate-like first antenna element, and a second antenna element connected to a side of the first antenna element through the power feeding portion, the second antenna element having a width smaller than that of the first antenna element; and a plate-like parasitic element disposed opposite to the antenna portion. The parasitic element has a length that is approximately one-half or more of a wavelength of an operating frequency. The second antenna element has a length that is shorter than one-fourth of the wavelength of the operating frequency. The antenna portion and the parasitic element have a distance capable of being connected electromagnetically to each other.
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公开(公告)号：US20140184465A9
公开(公告)日：2014-07-03
申请号：US14007896
申请日：2012-06-06
申请人： Hiroyuki Uejima , Yoshio Koyanagi , Suguru Kojima , Takanori Hirobe , Kouta Aoki , Masao Ootani
发明人： Hiroyuki Uejima , Yoshio Koyanagi , Suguru Kojima , Takanori Hirobe , Kouta Aoki , Masao Ootani
摘要： A first antenna element 102, a second antenna element 103, and a MEMS (micro-electromechanical system) switch 104 are provided, and a feeding point 110 is provided at one end of the first antenna element 102. The other end 113 of the first antenna element 102 is connected to a first terminal 106 of the MEMS switch 104, and one end 114 of the second antenna element 103 is connected to a second terminal 107 of the MEMS switch 104. The one end of the first antenna element 102 is grounded to a ground pattern 101 via an inductor 115, and a ground terminal 105 of the MEMS switch 104 is connected to the other end 113 of the first antenna element 102.
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公开(公告)号：US08224239B2
公开(公告)日：2012-07-17
申请号：US12374623
申请日：2006-07-21
申请人： Suguru Kojima
发明人： Suguru Kojima
IPC分类号： H04B7/185
CPC分类号： H04B1/48 , H04B7/0608 , H04B7/0814 , H04B7/082 , H04B7/12
摘要： A transmitting/receiving circuit holds a communication at a frequency f1 by using an antenna or an antenna, and a transmitting/receiving circuit holds a communication at a frequency f2 by using an antenna. In response to a receiving signal intensity, a switching circuit connects any one of the antennas to the transmitting/receiving circuit as a selected antenna for use in communication, and connects the other antenna to a terminating circuit as a non-selected antenna. The terminating circuit connected to the non-selected antenna has an impedance that satisfies a predetermined phase condition at the frequencies f1, f2 respectively, suppresses an inter-antenna coupling between the non-selected antenna and the selected antenna and the antenna, and suppresses degradation in antenna characteristic caused due to the inter-antenna coupling between the selected antenna and the antenna.
摘要翻译： 发送/接收电路通过使用天线或天线保持在频率f1的通信，并且发送/接收电路通过使用天线保持频率f2的通信。 响应于接收信号强度，开关电路将任何一个天线连接到发射/接收电路作为用于通信的选定天线，并将另一个天线连接到作为未选天线的终端电路。 连接到未选择的天线的终端电路具有分别满足频率f1，f2的预定相位条件的阻抗，抑制非选择天线与所选天线和天线之间的天线间耦合，并抑制劣化 由于所选择的天线和天线之间的天线间耦合而引起的天线特性。
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公开(公告)号：US06781556B2
公开(公告)日：2004-08-24
申请号：US10380699
申请日：2003-03-17
申请人： Suguru Kojima , Hideo Ito
发明人： Suguru Kojima , Hideo Ito
IPC分类号： H01Q1910
CPC分类号： H01Q19/005 , H01Q1/243 , H01Q1/245 , H01Q5/378 , H01Q9/16
摘要： A built-in antenna device that broadens bandwidth and that realizes further miniaturization and thin-modeling without making a device itself a flat shape, while still enhancing gain and reducing SAR (specific Absorption Rate). The self impedance of dipole antenna 12, the self impedance of parasitic element 14, and the mutual impedance between dipole antenna 12 and parasitic element 14 change as the length and girth of dipole antenna 12 and parasitic element 14, and the distance therebetween are adjusted to predetermined levels, so as to broaden bandwidth by changing the input impedance of built-in antenna 10.
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公开(公告)号：US11211715B2
公开(公告)日：2021-12-28
申请号：US16664963
申请日：2019-10-28
申请人： Suguru Kojima
发明人： Suguru Kojima
摘要： An antenna apparatus having directivity includes an antenna portion having a power feeding portion, a plate-like first antenna element, and a second antenna element connected to a side of the first antenna element through the power feeding portion, the second antenna element having a width smaller than that of the first antenna element; and a plate-like parasitic element disposed opposite to the antenna portion. The parasitic element has a length that is approximately one-half or more of a wavelength of an operating frequency. The second antenna element has a length that is shorter than one-fourth of the wavelength of the operating frequency. The antenna portion and the parasitic element have a distance capable of being connected electromagnetically to each other.
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公开(公告)号：US20140015729A1
公开(公告)日：2014-01-16
申请号：US14007896
申请日：2012-06-06
申请人： Hiroyuki Uejima , Yoshio Koyanagi , Suguru Kojima , Takanori Hirobe , Kouta Aoki , Masao OotaniI
发明人： Hiroyuki Uejima , Yoshio Koyanagi , Suguru Kojima , Takanori Hirobe , Kouta Aoki , Masao OotaniI
摘要： A first antenna element 102, a second antenna element 103, and a MEMS (micro-electromechanical system) switch 104 are provided, and a feeding point 110 is provided at one end of the first antenna element 102. The other end 113 of the first antenna element 102 is connected to a first terminal 106 of the MEMS switch 104, and one end 114 of the second antenna element 103 is connected to a second terminal 107 of the MEMS switch 104. The one end of the first antenna element 102 is grounded to a ground pattern 101 via an inductor 115, and a ground terminal 105 of the MEMS switch 104 is connected to the other end 113 of the first antenna element 102.
摘要翻译： 提供第一天线元件102，第二天线元件103和MEMS（微机电系统）开关104，并且馈电点110设置在第一天线元件102的一端。第一天线元件102的另一端113 天线元件102连接到MEMS开关104的第一端子106，并且第二天线元件103的一端114连接到MEMS开关104的第二端子107.第一天线元件102的一端接地 经由电感器115连接到接地图案101，并且MEMS开关104的接地端子105连接到第一天线元件102的另一端113。
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公开(公告)号：US06337668B1
公开(公告)日：2002-01-08
申请号：US09514274
申请日：2000-02-28
申请人： Hideo Ito , Takashi Enoki , Suguru Kojima
发明人： Hideo Ito , Takashi Enoki , Suguru Kojima
IPC分类号： H01Q1900
摘要： The antenna apparatus of the present invention places antenna element 302 that transmits or receives electromagnetic waves on basic plate 301, places parasitic antenna elements 303 to 306 on basic plate 301 evenly spaced concentrically centered on antenna element 302, places switch elements 307 to 310 and capacitances 311 to 314 in parallel between one end of each of antenna elements 303 to 306 and said basic plate and disconnects one of switch elements 307 to 310 and connects all the others. In this way, the present invention provides a small and high-gain antenna apparatus with directivity switching capability.
摘要翻译： 本发明的天线装置将天线元件302放置在基板301上发送或接收电磁波，将基本平板301上的寄生天线元件303至306均匀地间隔在天线元件302的中心位置，放置开关元件307至310和电容 311至314并联在每个天线元件303至306的一端和所述基板之间，并且断开开关元件307至310中的一个并连接所有其它元件。 以这种方式，本发明提供一种具有指向性切换能力的小型和高增益天线装置。
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公开(公告)号：US20050104783A1
公开(公告)日：2005-05-19
申请号：US10499904
申请日：2003-06-18
申请人： Suguru Kojima
发明人： Suguru Kojima
CPC分类号： H01Q1/38 , H01Q1/243 , H01Q9/0442 , H01Q9/42 , H01Q11/04
摘要： A mobile radio apparatus antenna for improving the gain and widening the band is provided. A inverted-L antenna (10) is a feed element with one end thereof electrically connected to one plate surface of a circuit board (12) through a feed point. The circuit board (12) is a circuit board of a mobile radio apparatus, to which the circuit parts including the inverted-L antenna (10) are connected. A planar antenna (14) is provided facing the backside plate surface of the plate surface of the circuit board (12), to which the inverted-L antenna (10) is connected, and is a parasitic element with an electrical length in the length direction set to approximately ½ of the wavelength of radio waves communicated by the mobile radio apparatus. Here, the dimension of the inverted-L antenna (10), the circuit board (12), and the planar antenna (14), and the distance therebetween are adjusted to predetermined values, so as to change the self-impedance of the inverted-L antenna (10), the self-impedance of the planar antenna (14), and the mutual impedance between the inverted-L antenna (10) and the planar antenna (14).
摘要翻译： 提供了一种用于改善增益和扩大频带的移动无线电设备天线。 倒L型天线（10）是馈电元件，其一端通过馈电点电连接到电路板（12）的一个板表面。 电路板（12）是移动无线电设备的电路板，包括反向L天线（10）的电路部分连接到该电路板。 面向电路板（12）的板表面的背面板表面的平面天线（14）被设置，反向L型天线（10）连接到该背面板表面，并且是具有长度为长度的寄生元件 方向设置为由移动无线电设备传送的无线电波长的大约1/2。 这里，将倒L型天线（10），电路基板（12）和平面天线（14）的尺寸及其间的距离调整为预定值，以便改变反向 -L天线（10），平面天线（14）的自身阻抗以及倒L型天线（10）与平面天线（14）之间的互阻抗。
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