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公开(公告)号：US06480168B1
公开(公告)日：2002-11-12
申请号：US09664801
申请日：2000-09-19
IPC分类号： H01Q944
CPC分类号： H01Q1/1235 , H01Q1/1242 , H01Q1/32 , H01Q1/52 , H01Q9/18 , H01Q21/28
摘要： An compact and rugged antenna system particularly suited to direction finding includes a plurality of antenna arrays for receiving respective frequency bands and colocated on a mast with separation between antenna arrays along the mast. The mast includes a coil wound of an insulator and functioning as a loaded inductor to shift the mast resonance out of the frequency band of the antenna system. A VHF dipole array having elements shaped to reduce scattering to UHF and SHF arrays is supported on movable arms which allow retraction that reduces height and provides mechanical protection to one or more other arrays as well as damping against vibration by contacting the mast with shaped portions of the dipole elements. The bowtie elements of the UHF array are angled at a central region to optimize array diameter at low UHF frequencies. A finned RF electronics housing is preferably provided which reduces solar loading and dissipates heat from antenna electronics. Asymmetrically keyed fittings are provided to permit accurate antenna system, array and element positioning and replaceable components and wiring, both internally and externally of the housing, is held in position to allow field repairs without recalibration.
摘要翻译： 特别适用于方向发现的紧凑且坚固的天线系统包括多个天线阵列，用于接收相应的频带，并且沿着桅杆分离在天线阵列之间并与桅杆共同配置。 桅杆包括缠绕绝缘体的线圈，并且用作加载的电感器，以将桅杆共振从天线系统的频带移出。 具有成形以减少对UHF和SHF阵列的散射的元件的VHF偶极阵列被支撑在可移动臂上，其允许缩回，其减小高度并且提供对一个或多个其它阵列的机械保护，以及通过使桅杆与成形部分 偶极子元件。 UHF阵列的弓形元件在中心区域成角度，以在低UHF频率下优化阵列直径。 优选地提供翅片式RF电子设备外壳，其减少太阳能负载并且从天线电子设备散发热量。 提供非对称密钥配件以允许精确的天线系统，阵列和元件定位以及壳体的内部和外部的可更换部件和布线被保持在适当位置，以便在不进行重新校准的情况下进行现场维修。
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公开(公告)号：US5686928A
公开(公告)日：1997-11-11
申请号：US542755
申请日：1995-10-13
CPC分类号： H01Q21/12 , H01Q1/3225 , H01Q19/10 , H01Q19/30 , H01Q21/0006 , H01Q3/26 , H01Q9/26
摘要： A multi-element, H plane, phased, dipole array antenna has a high gain over a wide angle in azimuth and over a controlled sector in elevation. Two printed wiring boards feed and physically support the dipole antenna elements. The phase and spacing of the dipole elements establish the radiation elevation angle, and a planar metallic reflector, spaced on the order of a half wavelength of the RF signal from the dipole array, interacts with the dipole-element pattern, to provide the wide angle azimuth gain.
摘要翻译： 多单元H平面相位偶极阵列天线在方位角和高度受控扇区的广角上具有高增益。 两个印刷线路板馈送和物理地支撑偶极天线元件。 偶极子元件的相位和间隔建立了辐射仰角，并且平面金属反射器与来自偶极子阵列的RF信号的半波长间隔开，与偶极子元件图案相互作用，以提供广角 方位角增益。
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公开(公告)号：US6127981A
公开(公告)日：2000-10-03
申请号：US899166
申请日：1997-07-23
CPC分类号： H01Q21/12 , H01Q1/3225 , H01Q19/10 , H01Q19/30 , H01Q21/0006 , H01Q3/26 , H01Q9/26
摘要： A multi-element, H plane, phase, dipole array antenna has a high gain over a wide angle in azimuth and over a controlled sector in elevation. Two printed wiring boards feed and physically support the dipole antenna elements. The phase and spacing of the dipole elements establish the radiation elevation angle, and a planar metallic reflector, spaced on the order of a half wavelength of the RF signal from the dipole array, interacts with the dipole-element pattern, to provide the wide angle azimuth gain.
摘要翻译： 多单元H平面相位偶极阵列天线在广角方位角和高度受控扇区具有高增益。 两个印刷线路板馈送和物理地支撑偶极天线元件。 偶极子元件的相位和间隔建立了辐射仰角，并且平面金属反射器与来自偶极子阵列的RF信号的半波长间隔开，与偶极子元件图案相互作用，以提供广角 方位角增益。
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公开(公告)号：US5387919A
公开(公告)日：1995-02-07
申请号：US68728
申请日：1993-05-26
CPC分类号： H01Q9/18
摘要： A dipole antenna comprises first and second antenna radiators and first and second balanced transmission-line conductors which are electrically connected to the first and second antenna radiators, respectively. An inner conductor and a shield of a coaxial cable are electrically connected to the first and second balanced conductors, respectively to transmit a drive signal to the first and second antenna radiators. A balun is electrically connected to an intersection of the coaxial cable and the first and second balanced conductors. The first and second antenna radiators and the first and second balanced conductors are supported substantially along a common axis such that the first and second balanced conductors separate the first and second antenna radiators from the balun and coaxial cable. The balun can also be supported generally along the same axis.
摘要翻译： 偶极天线包括分别电连接到第一和第二天线辐射器的第一和第二天线辐射器以及第一和第二平衡传输线导体。 同轴电缆的内导体和屏蔽分别电连接到第一和第二平衡导体，以将驱动信号传输到第一和第二天线辐射器。 平衡 - 不平衡转换器电连接到同轴电缆与第一和第二平衡导体的交点。 第一和第二天线辐射器以及第一和第二平衡导体基本上沿公共轴支撑，使得第一和第二平衡导体将第一和第二天线辐射器与平衡 - 不平衡转换器和同轴电缆分开。 平衡 - 不平衡变换器也可以一般沿同一轴线支撑。
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