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71. 发明授权

US4687445A Subsurface antenna system 失效
标题翻译：地下天线系统
公开(公告)号：US4687445A
公开(公告)日：1987-08-18
申请号：US236244
申请日：1981-02-20
申请人： John C. Williams
发明人： John C. Williams
IPC分类号： H01Q1/04 , H01Q3/26 , H01Q25/00
CPC分类号： H01Q1/04 , H01Q25/00 , H01Q3/26
摘要： A subsurface antenna system including at least one pair of radiating elements and feed system is buried within a subsurface medium. The radiating elements comprising the system are spaced apart at least one quarter free space wavelength at an operating frequency. The radiating elements are spaced from each other and the feed system provides appropriate relative phase to signals at the elements to produce from the antenna system a directional antenna pattern in free space.
摘要翻译：包括至少一对辐射元件和进料系统的地下天线系统被埋在地下介质内。包括系统的辐射元件在工作频率处间隔至少四分之一自由空间波长。辐射元件彼此间隔开，并且馈电系统为在元件处的信号提供适当的相对相位，以从天线系统产生自由空间中的定向天线方向图。

72. 发明授权

US4376941A Antenna cable 失效
标题翻译：天线电缆
公开(公告)号：US4376941A
公开(公告)日：1983-03-15
申请号：US14829
申请日：1970-01-29
申请人： Joseph A. Zenel
发明人： Joseph A. Zenel
IPC分类号： H01Q1/04 , H01Q1/34
CPC分类号： H01Q1/04
摘要： A distributed loop antenna is embodied in a flexible cable structure for marine E.L.F. (extremely low frequency) radio reception. Several distributed loop and magnetic core configurations which provide "side-looking" reception are described, as is the ability of flexible distributed loops to minimize the induction of noise voltages in the antenna.
摘要翻译：分布式环形天线体现在潜艇E.L.F.的柔性电缆结构中。（极低频）无线电接收。描述了提供“侧面”接收的几个分布式环路和磁芯配置，以及柔性分布式环路使天线中的噪声电压的感应最小化的能力。

73. 发明授权

US4028707A Antenna for underground pipe detector 失效
标题翻译：天线地下管道探测器
公开(公告)号：US4028707A
公开(公告)日：1977-06-07
申请号：US665924
申请日：1976-03-11
申请人： Jonathan D. Young , Ross Caldecott
发明人： Jonathan D. Young , Ross Caldecott
IPC分类号： G01S13/02 , G01S13/88 , G01V3/02 , G01V15/00 , H01Q1/04 , H01Q25/00 , H01Q21/26
CPC分类号： H01Q25/001 , G01S13/0209 , G01V15/00 , G01V3/02 , H01Q1/04 , G01S13/885
摘要： An apparatus and method wherein an electrial impulse source transmits a radar-type signal through an antenna into the ground and is reflected by a target. The reflected signal or echo is detected by the antenna and an analog-to-digital converter converts it to a digital form which may be readily operated on, stored and recalled. A memory stores the information until recalled for comparison with a subsequent signal to give an indication of the location of metallic and non-metallic buried targets.
摘要翻译：一种装置和方法，其中电脉冲源通过天线将雷达型信号发射到地面中并被目标反射。反射信号或回波由天线检测，模数转换器将其转换为数字形式，可以方便地进行操作，存储和调用。存储器存储信息，直到被调用以与随后的信号进行比较以给出金属和非金属掩埋目标的位置的指示。

74. 发明授权

US3867710A Communication system 失效
标题翻译：通讯系统
公开(公告)号：US3867710A
公开(公告)日：1975-02-18
申请号：US2623260
申请日：1960-05-02
申请人： ITT
发明人： BUSIGNIES HENRI G
IPC分类号： H04B13/02 , H01Q1/04
CPC分类号： H04B13/02
摘要： 7. A system for communicating electromagnetic signals through the atmosphere between at least two underwater objects capable of transmitting and receiving electromagnetic signals comprising a transmitter and receiver for said signals carried by each of said objects, first conductive means carried by each said object and disposed within the water for radiating said transmitted signals into the water and producing conductive currents and corresponding fields in the water surrounding said object and capable of receiving incoming signals carried by other conductive currents in the vicinity, second conductive means carried by each said object and releasable by each said object to be disposed at the surface of the water separate from said object and in the vicinity of each of said objects with the ends thereof in contact with the water and capable of receiving the transmitted signals of said conductive currents and to radiate said transmitted signals into the atmosphere for reception by the second conductive means disposed on the surface of the water separate from and in the vicinity of the other object, said second conductive means being capable of detecting said signals radiated through the atmosphere and radiating said signals through said ends into the water and producing conduction currents and corresponding fields in the water surrounding the adjacent object.
摘要翻译： 7.一种用于在能够发送和接收电磁信号的至少两个水下物体之间通过大气传播电磁信号的系统，所述电磁信号包括用于由每个所述物体承载的所述信号的发射器和接收器，由每个所述物体携带的第一导电装置，用于将所述传输的信号辐射到水中并在围绕所述物体的水中产生导电电流和相应的场并且能够接收由附近的其它导电电流携带的输入信号的水，由每个所述物体携带的第二导电装置，并且可由每个所述物体设置在与所述物体分离的水面上，并且在每个所述物体附近，其端部与水接触并且能够接收所述导电电流的传输信号并辐射所述传输信号进入接待的气氛第二导电装置设置在与另一个物体分开并在其附近的水表面上，所述第二导电装置能够检测通过大气辐射的所述信号，并将所述信号通过所述端部辐射到水中并产生传导电流，围绕相邻物体的水中的相应场。

75. 发明授权

US3435457A Underground antenna 失效
标题翻译：地下天线
公开(公告)号：US3435457A
公开(公告)日：1969-03-25
申请号：US3435457D
申请日：1965-12-07
申请人： US ARMY
发明人： BRUECKMANN HELMUT
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

76. 发明授权

US1799726A Method and apparatus for the reception of broadcast radio frequencies 失效
标题翻译：用于接收广播射频的方法和装置
公开(公告)号：US1799726A
公开(公告)日：1931-04-07
申请号：US9077626
申请日：1926-02-26
申请人： BUTLER LESTER H
发明人： BUTLER LESTER H
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

77. 发明授权

US1795534A Subterranean antenna 失效
标题翻译：地下天线
公开(公告)号：US1795534A
公开(公告)日：1931-03-10
申请号：US31698028
申请日：1928-11-03
申请人： LYNN VAN ARSDALE , MILTON E WALDROP
发明人： WYRICK ROY M
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

78. 发明授权

US1667008A Underground antenna 失效
标题翻译：地下天线
公开(公告)号：US1667008A
公开(公告)日：1928-04-24
申请号：US15706126
申请日：1926-12-27
申请人： NICHOLAS KADEL
发明人： NICHOLAS KADEL
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

79. 发明授权

US1638699A moburg 失效
公开(公告)号：US1638699A
公开(公告)日：1927-08-09
申请号：US1638699D
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

80. 发明授权

US1429240A Radiosignaling system 失效
公开(公告)号：US1429240A
公开(公告)日：1922-09-19
申请号：US36106220
申请日：1920-02-24
申请人： HANSON EARL C , JONES EDWARD T
发明人： HANSON EARL C , JONES EDWARD T
IPC分类号： H01Q1/04
CPC分类号： H01Q1/04

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