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公开(公告)号：US10707581B2
公开(公告)日：2020-07-07
申请号：US15860943
申请日：2018-01-03
发明人： Yahya Mohtashami , Nader Behdad , Susan C. Hagness
摘要： An antenna includes a first dipole arm and a second dipole arm. The first dipole arm is connected to a first conductor and is formed of a first conducting material. The first dipole arm extends in an axial direction from the first conductor. The second dipole arm is connected to a second conductor that is distinct from the first conductor and is formed of a second conducting material. The second dipole arm extends in the axial direction from the second conductor and is wound around the first dipole arm to form a number of loops. The second dipole arm does not contact the first dipole arm. An axial length of the second dipole arm in the axial direction is less than 90% of an axial length of the first dipole arm in the axial direction.
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公开(公告)号：US20180261922A1
公开(公告)日：2018-09-13
申请号：US15454170
申请日：2017-03-09
发明人： Nader Behdad , Susan C. Hagness , Yahya Mohtashami
CPC分类号： A61B18/1815 , A61B2018/00577 , A61B2018/00785 , A61B2018/1853
摘要： An antenna system is provided that includes a coaxial cable, an antenna, a reflector wall, and a slot wall. The reflector wall is formed of a conductive material connected to a conductive shield to extend in an axial direction, is separated from an antenna conductor by a second dielectric material in a radial direction relative to the antenna conductor, and partially surrounds the antenna conductor in the radial direction from a first angle to a second angle when projected into a radial plane. The slot wall is formed through a portion of the conductive shield to expose a dielectric material from a third angle to a fourth angle when projected into the radial plane, is formed on a first side relative to a base. The first angle, the second angle, the third angle, and the fourth angle are defined relative to a common axis parallel to the radial plane.
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公开(公告)号：US10765477B2
公开(公告)日：2020-09-08
申请号：US14202786
申请日：2014-03-10
发明人： Nader Behdad , Susan C. Hagness , Hung Thanh Luyen
摘要： An antenna system is provided. The antenna system includes a coaxial cable, an antenna, and an impedance matching structure. The coaxial cable includes a center conductor extending a length of the coaxial cable, a dielectric material surrounding the center conductor along the length of the coaxial cable, and a conductive shield surrounding the dielectric material along the length of the coaxial cable. The antenna includes a conductor having an electrical length of half a wavelength at a selected operating frequency. The impedance matching structure includes a second center conductor mounted between an end of the center conductor of the coaxial cable and a feed end of the antenna. The impedance matching structure is configured to match an impedance of the coaxial cable to an impedance of the antenna.
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公开(公告)号：US20190207316A1
公开(公告)日：2019-07-04
申请号：US15860943
申请日：2018-01-03
发明人： Yahya Mohtashami , Nader Behdad , Susan C. Hagness
摘要： An antenna includes a first dipole arm and a second dipole arm. The first dipole arm is connected to a first conductor and is formed of a first conducting material. The first dipole arm extends in an axial direction from the first conductor. The second dipole arm is connected to a second conductor that is distinct from the first conductor and is formed of a second conducting material. The second dipole arm extends in the axial direction from the second conductor and is wound around the first dipole arm to form a number of loops. The second dipole arm does not contact the first dipole arm. An axial length of the second dipole arm in the axial direction is less than 90% of an axial length of the first dipole arm in the axial direction.
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公开(公告)号：US11058487B2
公开(公告)日：2021-07-13
申请号：US15454170
申请日：2017-03-09
发明人： Nader Behdad , Susan C. Hagness , Yahya Mohtashami
摘要： An antenna system is provided that includes a coaxial cable, an antenna, a reflector wall, and a slot wall. The reflector wall is formed of a conductive material connected to a conductive shield to extend in an axial direction, is separated from an antenna conductor by a second dielectric material in a radial direction relative to the antenna conductor, and partially surrounds the antenna conductor in the radial direction from a first angle to a second angle when projected into a radial plane. The slot wall is formed through a portion of the conductive shield to expose a dielectric material from a third angle to a fourth angle when projected into the radial plane, is formed on a first side relative to a base. The first angle, the second angle, the third angle, and the fourth angle are defined relative to a common axis parallel to the radial plane.
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公开(公告)号：US20150250540A1
公开(公告)日：2015-09-10
申请号：US14202786
申请日：2014-03-10
发明人： Nader Behdad , Susan C. Hagness , Hung Thanh Luyen
CPC分类号： A61B18/1815 , A61B2018/00529 , A61B2018/00577 , A61B2018/1846 , A61B2018/1853 , A61B2018/1892 , H01Q9/42
摘要： An antenna system is provided. The antenna system includes a coaxial cable, an antenna, and an impedance matching structure. The coaxial cable includes a center conductor extending a length of the coaxial cable, a dielectric material surrounding the center conductor along the length of the coaxial cable, and a conductive shield surrounding the dielectric material along the length of the coaxial cable. The antenna includes a conductor having an electrical length of half a wavelength at a selected operating frequency. The impedance matching structure includes a second center conductor mounted between an end of the center conductor of the coaxial cable and a feed end of the antenna. The impedance matching structure is configured to match an impedance of the coaxial cable to an impedance of the antenna.
摘要翻译： 提供天线系统。 天线系统包括同轴电缆，天线和阻抗匹配结构。 同轴电缆包括延伸同轴电缆长度的中心导体，沿同轴电缆的长度围绕中心导体的电介质材料，以及围绕同轴电缆长度的电介质材料的导电屏蔽。 天线包括在所选择的工作频率下具有半波长的电长度的导体。 阻抗匹配结构包括安装在同轴电缆的中心导体的端部与天线的馈电端之间的第二中心导体。 阻抗匹配结构被配置为将同轴电缆的阻抗与天线的阻抗相匹配。
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公开(公告)号：US20180256251A1
公开(公告)日：2018-09-13
申请号：US15454218
申请日：2017-03-09
发明人： Susan C. Hagness , Nader Behdad , Hung Thanh Luyen
CPC分类号： A61B18/1815 , A61B2018/00577 , A61B2018/1838 , A61B2018/1861 , A61B2018/1892 , H05B6/72
摘要： A balun includes a center conductor, a dielectric material, a tapered wall, a ring, and a prong. The center conductor extends a length of the balun. The dielectric material surrounds the center conductor along the length of the balun. The tapered wall forms a portion of a tube between a first wall and a second wall. The first wall is opposite the second wall. The tapered wall is formed of a conductive material. The portion of the tube forms a slot exposing the dielectric material. The ring connects to the second wall of the tapered wall and is formed of the conductive material. The ring forms a tube surrounding the center conductor and the dielectric material. The prong connects to the ring to extend toward the first wall and is formed of the conductive material. The prong extends over a portion of the dielectric material exposed by the slot.
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