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公开(公告)号：US11258171B2
公开(公告)日：2022-02-22
申请号：US16704191
申请日：2019-12-05
发明人： Masahiro Izawa , Yoshiki Yamada
摘要： An antenna includes a dielectric substrate, a radiating element, a parasitic element, and a ground conductor. The dielectric substrate has a plate-like shape having a top face and a back face opposite to each other. The radiating element is placed between the top face and the back face of the dielectric substrate and transmits and receives a radio frequency signal of a first frequency. The parasitic element is placed on the top face of the dielectric substrate and transmits and receives a radio frequency signal of a second frequency. The ground conductor is placed on the back face of the dielectric substrate. The second frequency is a lower frequency than the first frequency. The dielectric substrate has an electric field boundary plane that reflects a radio frequency signal of the second frequency at an intermediate position in a thickness direction orthogonal to the top face and the back face.
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公开(公告)号：US20180183145A1
公开(公告)日：2018-06-28
申请号：US15902073
申请日：2018-02-22
发明人： Masahiro Izawa
CPC分类号： H01Q1/521 , H01Q1/48 , H01Q5/371 , H01Q7/00 , H01Q9/30 , H01Q9/42 , H01Q21/0006 , H01Q21/28 , H01Q21/30
摘要： An antenna device including a ground conductor and first and second antennas. The first and second antennas are linear antennas and have respective feeding points at ends on a side of the ground conductor. The first and second antennas perform transmission/reception at first and second frequencies that are adjacent to each other, respectively. Moreover, the first antenna includes a first monopole antenna and a loop antenna branched off from the first monopole antenna. An end of the loop antenna opposing a branching point at which the loop antenna is branched off from the first monopole antenna is short-circuited between the feeding points of the first and second antennas on the ground conductor.
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公开(公告)号：US11367963B2
公开(公告)日：2022-06-21
申请号：US17000730
申请日：2020-08-24
发明人： Yasuo Tanbo , Masahiro Izawa
摘要： A conductor pattern of an antenna device is provided in a notch and includes a common conductor, a first conductor, and a second conductor. A power supply unit is disposed at a connection portion between a conductor plate and the conductor pattern. Each of the first conductor and the second conductor is connected to the power supply unit with the common conductor interposed therebetween. The power supply unit is positioned at a position at which a distance to an opening end is shorter than a distance to a closed end at a side end. A first partial conductor of the first conductor is positioned between the second conductor and a side end. A length of the first conductor in a direction along the side end is longer than a length of the second conductor in the direction along the side end.
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公开(公告)号：US11309641B2
公开(公告)日：2022-04-19
申请号：US16251618
申请日：2019-01-18
摘要： An antenna (101) includes a grounded conductive foil (110) disposed on a module substrate (140), a first conductive foil (111), and a second conductive foil (112). The first conductive foil (111) and the second conductive foil (112) are disposed on the module substrate (140), are elongated, and do not overlap with the grounded conductive foil (110) in a plan view of the module substrate (140). The first conductive foil (111) has one end supplied with an antenna signal and the other end that is open. The second conductive foil (112) has one end connected to the grounded conductive foil (110) and the other end that is open. A wireless module (120) includes a circuit unit (130) including a communication circuit and provided to the module substrate (140) on which the antenna (101) is formed.
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公开(公告)号：US12046838B2
公开(公告)日：2024-07-23
申请号：US17901018
申请日：2022-09-01
发明人： Koji Kamada , Kunihiro Komaki , Masahiro Izawa , Ryo Komura
CPC分类号： H01Q9/0407 , H01Q1/48 , H05K1/162 , H05K2201/09672 , H05K2201/10098
摘要： An element assembly has a structure in which insulator layers including first and second insulator layers are laminated in an up-down direction. The first insulator layer is above the second insulator layer. A radiant conductor layer is on an upper surface of the first insulator layer. A first capacitance defining portion includes a first interlayer connection conductor passing through one or more of the insulator layers in the up-down direction. The first interlayer connection conductor is electrically connected to the radiant conductor layer. The radiant conductor layer, a ground conductor, and the first capacitance defining portion define and function as a patch antenna. When the first interlayer connection conductor is electrically connected to the radiant conductor layer, a distance from a lower end of the first interlayer connection conductor to the ground conductor in the up-down direction is shorter than a distance from the radiant conductor layer to the ground conductor in the up-down direction.
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公开(公告)号：US10530067B2
公开(公告)日：2020-01-07
申请号：US16003141
申请日：2018-06-08
摘要： An antenna element includes an antenna board, a radiation conductor including radiation portions including a top surface portion and being divided at positions corresponding to frequency bands and provided with respect to a first feeding point in plan view of the antenna board, through-conductors penetrating the antenna board at respective positions of end portions of the top surface portion in a thickness direction, and bottom surface electrodes provided on a bottom surface of the antenna board opposite the end portions of the top surface portion, and connected to the top surface portion via the through-conductors.
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公开(公告)号：US12051862B2
公开(公告)日：2024-07-30
申请号：US17657367
申请日：2022-03-31
发明人： Shota Taki , Masahiro Izawa , Yasuo Tanbo
CPC分类号： H01Q9/40 , H01Q5/25 , H01Q5/364 , H01Q9/0421
摘要： An antenna unit includes a feed point, a first antenna conductor extending from the feed point and having a width that expands as a distance from the feed point increases, a second antenna conductor facing a top end edge of the first antenna conductor with a gap formed therebetween, a first connection part connecting the top end edge of the first antenna conductor and the second antenna conductor via a capacitor, and a second connection part connecting the top end edge of the first antenna conductor and the second antenna conductor via an inductor or a zero-ohm resistor. A first connection point between the first connection part and the first antenna conductor is closer to a center of the top end edge of the first antenna conductor compared with a second connection point between the second connection part and the first antenna conductor.
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公开(公告)号：US11101561B2
公开(公告)日：2021-08-24
申请号：US16810959
申请日：2020-03-06
发明人： Masahiro Izawa
摘要： A dual band compatible antenna device includes a first branch electrode having a first electrode portion connected to a common electrode with a first adjustment element interposed between the first electrode portion and the common electrode and a second branch electrode having a second electrode portion connected to the common electrode with a second adjustment element interposed between the second electrode portion and the common electrode. The first electrode portion and the second electrode portion are provided on a line to have a length equal to or longer than ⅔ of an electrical length of the first branch electrode and the second branch electrode.
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公开(公告)号：US10965018B2
公开(公告)日：2021-03-30
申请号：US15952977
申请日：2018-04-13
发明人： Masahiro Izawa
IPC分类号： H01Q21/28 , H01Q1/48 , H01Q1/46 , H01Q5/378 , H01Q5/35 , H01Q1/22 , H01Q1/38 , H01Q19/00 , H01Q21/06
摘要： A first ground conductor is disposed in or on a main substrate. In or on an antenna module, a first antenna and a second ground conductor operating as a ground electrode of the first antenna are disposed. A coaxial cable including a core wire and an outer conductor feeds power to the first antenna. The outer conductor is electrically connected to the first ground conductor at a first position, and is connected to the second ground conductor at a second position. A second antenna including a feed element and a parasitic element operates at a lower frequency than the operating frequency of the first antenna. The second ground conductor and a part of the outer conductor from the first position to the second position also serve as the parasitic element of the second antenna.
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公开(公告)号：US10418701B2
公开(公告)日：2019-09-17
申请号：US15902073
申请日：2018-02-22
发明人： Masahiro Izawa
IPC分类号： H01Q1/52 , H01Q21/28 , H01Q1/48 , H01Q5/371 , H01Q7/00 , H01Q9/30 , H01Q21/00 , H01Q9/42 , H01Q21/30
摘要： An antenna device including a ground conductor and first and second antennas. The first and second antennas are linear antennas and have respective feeding points at ends on a side of the ground conductor. The first and second antennas perform transmission/reception at first and second frequencies that are adjacent to each other, respectively. Moreover, the first antenna includes a first monopole antenna and a loop antenna branched off from the first monopole antenna. An end of the loop antenna opposing a branching point at which the loop antenna is branched off from the first monopole antenna is short-circuited between the feeding points of the first and second antennas on the ground conductor.
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