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公开(公告)号：US5406296A
公开(公告)日：1995-04-11
申请号：US57615
申请日：1993-05-05
摘要： A three-wave antenna for vehicles which includes a monopole antenna element which has an electrical length of approximately 1/4 of the wavelength in the FM broadcast band along with a double sleeve used to prevent current flow and with a second double sleeve used for phase adjustment that are installed coaxially with the antenna element. The positional relationships between the inner and outer cylinders of each one of the first and second double sleeves relative to the antenna element are respectively specified. In addition, an antenna attachment which has a capacitive reactance and is installed at the base of the antenna element so that it cancels the inductive reactance of the antenna and causes the impedance of the antenna to approach a prescribed value is employed together with a wave splitter which includes a high pass filter that has a double tuning function with respect to the inductive reactance and the capacitive reactance and a low pass filter that separates the AM/FM broadcast band signals from the telephone band.
摘要翻译： 一种用于车辆的三波天线，其包括单极天线元件，其具有在FM广播频带中的大约1/4波长的电长度以及用于防止电流流动的双套筒，以及用于相位的第二双套筒 与天线元件同轴安装的调整。 分别指定第一和第二双套筒中的每一个相对于天线元件的内筒和外筒之间的位置关系。 另外，天线附件具有容抗，并且安装在天线元件的底部，使得其消除天线的感抗并使天线的阻抗接近规定值与波分路器 其包括相对于感抗和电容性电抗具有双调谐功能的高通滤波器，以及将AM / FM广播频带信号与电话频带分开的低通滤波器。
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公开(公告)号：US5327151A
公开(公告)日：1994-07-05
申请号：US905266
申请日：1992-06-26
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
CPC分类号： H01Q9/32 , H01Q1/1271 , H01Q1/50
摘要： In order to provide a broad-band non-grounded type ultrashort-wave antenna which has sufficiently high sensitivity characteristics and broad-band VSWR characteristics even in an expanded frequency band, is able to use a small-diameter antenna element, is light in weight and simple in structure, and can be manufactured inexpensively, an antenna element parallel resonance part, that is formed by the inductance and distributed capacitance of the rod-form antenna element which has an electrical length close to lambda/2 or an integral multiple of lambda/2, and a metal member parallel resonance part, that is formed by the electrostatic capacitance between first and second metal members which are installed parallel to each other and have respective electrical lengths of lambda/4 and the inductance of the first metal member, are electrostatically coupled by the stray capacity that exists between the antenna element and an electrostatic coupling piece projected from the second metal member, thus forming a double-tuned circuit. The antenna thus constructed has the VSWR characteristics of a twin-peak form, thus being suitable for a broader frequency trend and having a desired gain for the entire frequency band used.
摘要翻译： 为了提供甚至在扩展频带中具有足够高灵敏度特性和宽带VSWR特性的宽带非接地型超短波天线，能够使用小直径天线元件，重量轻 并且结构简单，并且可以廉价地制造天线元件并联谐振部分，其由棒形天线元件的电感和分布电容形成，其电长度接近λ/ 2或λ的整数倍 / 2，并且由第一和第二金属构件之间的彼此平行并且具有各自的电长度λ/ 4和第一金属构件的电感的静电电容形成的金属构件并联谐振部分是 通过存在于天线元件与从第二金属构件投影的静电耦合片之间的杂散电容静电耦合 形成双调谐电路。 如此构造的天线具有双峰形式的VSWR特性，因此适合于更广泛的频率趋势并且对于所使用的整个频带具有期望的增益。
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公开(公告)号：US5239304A
公开(公告)日：1993-08-24
申请号：US526683
申请日：1990-05-21
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
CPC分类号： H01Q9/16 , H01Q5/00 , H01Q5/40 , H01Q9/36 , Y10T74/20456
摘要： A three-wave vehicle antenna in which an insulating pipe is connected to the tip of a conducting pipe, and an MT wave antenna element and a coaxial MT wave matching device are housed in the insulating pipe. One end of the coaxial MT wave feeder cable is connected to the matching device and the other end is guided through the conductive pipe which is designed to be used as an AM/FM antenna. The coaxial MT wave feeder cable uses polytetrafluoroethylene, at least for the external insulation member, for covering the outer conductor. With this arrangement it is possible for the three-wave vehicle antenna to check decreases in sensitivity of the AM/FM wave antenna element, since it is feasible to lower the stray capacity between the conductive pipe and the outer conductor of the coaxial MT wave feeder cable without enlarging the diameter of the conductor pipe.
摘要翻译： 将绝缘管连接到导电管的末端的三波车辆天线，以及MT波天线元件和同轴MT波形匹配装置容纳在绝缘管中。 同轴MT波馈线电缆的一端连接到匹配装置，另一端引导通过设计用作AM / FM天线的导电管。 同轴MT波馈线电缆至少用于外绝缘构件，用于覆盖外导体的聚四氟乙烯。 利用这种布置，由于可以降低导体管和同轴MT波导管的外导体之间的杂散能力，所以三波车载天线可以检查AM / FM波天线元件的灵敏度的降低 电缆，而不扩大导体管的直径。
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公开(公告)号：US4945361A
公开(公告)日：1990-07-31
申请号：US353445
申请日：1989-05-17
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
CPC分类号： H01Q1/1214
摘要： An automobile antenna fastening device comprising an inner fastening assembly and outer fastening assembly. The inner fastening assembly includes a gland washer made of an elastic material and a gland base, and the outer fastening assembly includes a pad and fastening nut. An antenna is mounted on the automobile body wall by clamping the automobile body wall between the outer and inner fastening assemblies, and the clamping force of the fastening assemblies is maintained by the elastic deformation of the gland washer of the inner fastening assembly.
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公开(公告)号：US06985114B2
公开(公告)日：2006-01-10
申请号：US10836203
申请日：2004-05-03
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
IPC分类号： H01Q1/24
CPC分类号： H01Q1/2266 , G06F1/1616 , G06F1/1656 , G06F1/1698 , H01Q1/22 , H01Q5/371 , H01Q5/378 , H01Q9/42 , H01Q21/30 , Y10T29/49016
摘要： A multi-frequency antenna having a small size, light weight and excellent productivity and being suitable for transmitting and receiving electric waves in Ghz band, is constituted such that an orthogonal coordinate X-Y is set, a first antenna element 21 having an electric wavelength of λa/4 and a second antenna element 22 having an electric wavelength of λb/4 are placed in parallel to the X axis respectively, one edge of each of said elements is positioned near the Y axis, said two elements are connected electrically with a ground plate 8 by a short-circuit line 4 along the Y axis, a point where an impedance is 50 Ω (code 50) of the first antenna element 21 and a point where an impedance is 50 Ω of the second antenna element 22 are made to be a power feed point respectively, and said power feed points are connected with a coaxial cable 7 through a power feed line 6.
摘要翻译： 具有体积小，重量轻，生产率优异并且适合于在GhZZ带中发送和接收电波的多频天线被构成为使得正交坐标XY被设置，第一天线 具有电波长λλ/λ4的元件21和具有λλb / 4的电波长的第二天线元件22分别平行于X轴， 每个所述元件的一个边缘位于Y轴附近，所述两个元件沿着Y轴通过短路线4与接地板8电连接，阻抗为50Ω（代码50）的点 将第一天线元件21和第二天线元件22的阻抗为50Ω的点分别做成馈电点，并且所述馈电点通过馈电线6与同轴电缆7连接。
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公开(公告)号：US06414638B1
公开(公告)日：2002-07-02
申请号：US09360657
申请日：1999-07-26
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
IPC分类号： H01Q124
摘要： Provides an antenna for a radio telephone whereby, in a state wherein the rod-shaped antenna is extended to outside the case of the radio telephone, the effects of the human body are negligible and emission of radio waves at an angle close to the horizontal direction is possible, and in a state wherein the rod-shaped antenna is retracted within the case, no unwanted radiation is produced. For this purpose, a helical antenna 20 having an electrical length of &lgr;/4 and a rod-shaped antenna 10 extendable and retractable with respect to the case through the hollow central portion of the helical antenna 20 and having an electrical length of about 3&lgr;/8 and inductive reactance are electrically coupled by means of an electrostatic coupling portion 30 having capacitive reactance such that, in the state wherein the rod-shaped antenna 10 is extended from the case 50, the inductive reactance of the rod-shaped antenna 10 is cancelled out. The length of the bottom portion 12a of the connecting member 12 is set to a length such that when the rod-shaped antenna 10 is retracted within the case 50, the bottom portion 12a of the connecting member 12 passes through the helical coil 12 over the entire length thereof, severing electrical coupling between the helical antenna 20 and the rod-shaped antenna 10.
摘要翻译： 提供一种用于无线电话的天线，其中，在棒状天线延伸到无线电话机的外部的状态下，人体的影响可以忽略不计，并且以接近水平方向的角度发射无线电波 是可能的，并且在棒状天线缩回到壳体内的状态下，不产生不期望的辐射。 为此，具有lambd / 4电长度的螺旋天线20和一个棒形天线10，它通过螺旋天线20的中空中心部分相对于壳体可延伸和缩回，并具有大约3lambd / 8和感抗通过具有电容电抗的静电耦合部分30电耦合，使得在棒状天线10从壳体50延伸的状态下，棒状天线10的感抗被取消 出来 连接构件12的底部12a的长度被设定为使得当杆状天线10缩回到壳体50内时，连接构件12的底部12a穿过螺旋线圈12 切断螺旋天线20与杆状天线10之间的电耦合。
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公开(公告)号：US5691730A
公开(公告)日：1997-11-25
申请号：US708789
申请日：1996-09-09
申请人： Yoshimi Egashira , Minoru Taguchi
发明人： Yoshimi Egashira , Minoru Taguchi
CPC分类号： H01Q1/244
摘要： A retractable broad-band antenna for a portable telephone which includes a first antenna element which resonates in the lower region of the frequency band, a second antenna element which is coupled in series to the first antenna element via electrostatic capacitance and resonates in the higher region, and a call-receiving third antenna element mounted to the tip end of the second antenna element. The first and second antenna elements are shortened antenna elements in a form of helical coils. The first antenna element has an electrical length of .lambda.L/8 and is a non-grounded type having broad band characteristics by means of a matching device; and the second element has an electrical length of .lambda.H/2 wherein .lambda.H and .lambda.L are respectively the wave lengths at a center frequency of the higher and lower region of the frequency band used. The third antenna element preferably has a conductive contact so that the tip portion of the second antenna element, which stays outside of the telephone housing when the base portion of the second antenna element is retracted into the housing, can act as a call-receiving antenna element.
摘要翻译： 一种用于便携式电话的可伸缩宽带天线，其包括在所述频带的下部区域中谐振的第一天线元件，经由静电电容串联耦合到所述第一天线元件的第二天线元件，并且在所述较高区域中共振 以及安装到第二天线元件的末端的呼叫接收第三天线元件。 第一和第二天线元件是螺旋线圈形式的缩短的天线元件。 第一天线元件具有λL / 8的电长度，并且是通过匹配装置具有宽带特性的非接地型; 并且第二元件具有λH / 2的电长度，其中λH和λL分别是所使用的频带的较高和较低区域的中心频率处的波长。 第三天线元件优选地具有导电接触，使得当第二天线元件的基部缩回到壳体中时，第二天线元件的尖端部分停留在电话外壳的外部，可以用作呼叫接收天线 元件。
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公开(公告)号：US5457470A
公开(公告)日：1995-10-10
申请号：US99624
申请日：1993-07-30
申请人： Xu Hai , Yoshimi Egashira
发明人： Xu Hai , Yoshimi Egashira
CPC分类号： H01Q9/30 , H01Q1/3233
摘要： An M-type car antenna for traffic information communication systems including an antenna element having a length which is one-half of the wavelength of the radio way used in the information communication systems, and a connector which is connected via an electrostatic coupling to the center-of the antenna element, the impedance matching and feeding being carried out by the connector. In this antenna, the voltage polarity of the connector at the coupling point and that of the center of the antenna element are set to be opposite from each other, and the electric current in the antenna element and that in the connector are set to be in the same direction. Thus, the M-type antenna is compact and easy to manufacture with stable antenna characteristics.
摘要翻译： 一种用于交通信息通信系统的M型车载天线，包括长度为在信息通信系统中使用的无线电方式的波长的一半的天线元件，以及通过静电耦合连接到中心的连接器 - 天线元件的阻抗匹配和馈电由连接器进行。 在该天线中，耦合点处的连接器的电压极性和天线元件的中心的电压极性被设置为彼此相反，并且天线元件中的电流和连接器中的电流被设置为 方向相同 因此，M型天线结构紧凑，易于制造，天线性能稳定。
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公开(公告)号：USD333138S
公开(公告)日：1993-02-09
申请号：US620325
申请日：1990-11-29
申请人： Yoshimi Egashira , Michio Kira
设计人： Yoshimi Egashira , Michio Kira
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公开(公告)号：US4890114A
公开(公告)日：1989-12-26
申请号：US186805
申请日：1988-04-27
申请人： Yoshimi Egashira
发明人： Yoshimi Egashira
CPC分类号： H01Q1/244
摘要： An antenna for portable radiotelephones including an antenna element and antenna holder. The antenna element is covered by a non-conductive cover except for the tip and base ends which respectively have a cap and a sleeve, both made of conductive materials thereon. The antenna holder is made of conductive materials, fixed in a case of the telephone and is connected to a matching device. The antenna holder includes a fastening section and an engaging section and holds therein the antenna element so the antenna element can be pulled outside of and pushed back into the case. The fastening section engages with the cap of the antenna element when the antenna element is pulled outside of the case. Thus, the antenna element can be kept in a state of electrical continuity with the antenna holder, which is electrically connected to the matching device, at all times. That is, the antenna element of the present invention is responsive to call signals not only when the antenna element is pulled outside of the case, but also when it is pushed back into the case.
摘要翻译： 包括天线元件和天线保持器的便携式无线电话机的天线。 天线元件由不导电盖覆盖，除了尖端和底端分别具有盖和套筒，两者由其上的导电材料制成。 天线保持器由导电材料制成，固定在电话机的情况下并连接到匹配装置。 天线保持器包括紧固部和接合部，并且将天线元件保持在其中，使得天线元件可以被拉出外部并被推回到壳体中。 当天线元件被拉出外壳时，紧固部分与天线元件的盖接合。 因此，天线元件可以始终保持与与匹配装置电连接的天线保持器的电连接状态。 也就是说，本发明的天线元件不仅在将天线元件拉出壳体外部时，而且当其被推回到壳体中时响应于呼叫信号。
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