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公开(公告)号：US07952526B2
公开(公告)日：2011-05-31
申请号：US11844249
申请日：2007-08-23
CPC分类号： H01Q9/0457 , H01Q1/38 , H01Q9/0414 , H01Q15/008 , H01Q15/0086
摘要： A dual-band resonator with compact size, such as a resonant type dual-band antenna, which uses an anisotropic metamaterial is described. The artificial anisotropic medium is implemented by employing a composite right/left-handed transmission line. The dispersion relation and the antenna physical size only depend on the composition of the unit cell and the number of cells used. By engineering the characteristics of the unit cells to be different in two orthogonal directions, the corresponding propagation constants can be controlled, thus enabling dual-band antenna resonances. In addition, the antenna dimensions can be markedly minimized by maximally reducing the unit cell size. A dual-band antenna is also described which is designed for operation at frequencies for PCS/Bluetooth applications, and which has a physical size of 1/18λ0× 1/18λ0× 1/19λ0, where λ0 is the free space wavelength at 2.37 GHz.
摘要翻译： 描述了使用各向异性超材料的具有紧凑尺寸的双频带谐振器，例如谐振型双频天线。 通过使用复合右/左传输线来实现人造各向异性介质。 色散关系和天线物理尺寸仅取决于单元电池的组成和使用的电池数量。 通过将单位单元的特性在两个正交方向上设计为不同，可以控制相应的传播常数，从而实现双频天线谐振。 此外，通过最大限度地减小晶胞尺寸，可以显着地最小化天线尺寸。 还描述了一种双频天线，其被设计用于在PCS /蓝牙应用的频率下操作，并且具有1 /18λ0×1 /18λ0×1 /19λ0的物理尺寸，其中λ0是2.37GHz的自由空间波长 。
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2.发明授权Multi-band radiating elements with composite right/left-handed meta-material transmission line 有权具有复合右/左手超材料传输线的多波段辐射元件公开(公告)号：US07911386B1
公开(公告)日：2011-03-22
申请号：US11751852
申请日：2007-05-22
申请人： Tatsuo Itoh , Anthony Lai , Kevin M. K. H. Leong
发明人： Tatsuo Itoh , Anthony Lai , Kevin M. K. H. Leong
CPC分类号： H01Q9/0407
摘要： Dual-band and multi-band radiating elements are described based on composite right/left-handed (CRLH) meta-material transmission line (TL). These elements can operate as resonators and/or antennas depending on feed-line configuration. The radiating elements are based on the fundamental backward wave supported by a composite right/left-handed (CRLH) meta-material transmission line (TL). Unit-cells of the transmission line comprise conductive patches coupled through vias to a ground plane. The physical size and operational frequencies of the radiating element is determined by the unit cell of the CRLH meta-material. This radiating element is configured for monopolar radiation at a first resonant frequency and patch-like radiation at a second resonant frequency. The first and second resonant frequencies are not constrained to a harmonic relationship.
摘要翻译： 基于复合右/左（CRLH）超材料传输线（TL）描述了双频带和多频带辐射元件。 根据馈线配置，这些元件可以作为谐振器和/或天线工作。 辐射元件基于由复合右/左手（CRLH）超材料传输线（TL）支撑的基本反向波。 传输线的单位单元包括通过通孔耦合到接地平面的导电贴片。 辐射元件的物理尺寸和工作频率由CRLH超临界材料的晶胞确定。 该辐射元件被配置为在第一谐振频率下的单极辐射和在第二共振频率下的片状辐射。 第一和第二谐振频率不限于谐波关系。
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3.发明授权Power combiners using meta-material composite right/left hand transmission line at infinite wavelength frequency 有权功率组合器以无限波长频率使用超材料复合右/左传输线公开(公告)号：US07482893B2
公开(公告)日：2009-01-27
申请号：US11744160
申请日：2007-05-03
IPC分类号： H03H7/46
CPC分类号： H01P5/12
摘要： Power combining methods and devices for tunnel diode oscillators using the infinite wavelength phenomenon observed in composite right/left-handed (CRLH) meta-material lines are described. One implementation utilizes a series combiner composed of zero degree lines, with each oscillator output port connected directly to the line and combined in-phase, to equally combine the power in phase. In a second implementation, a section of zero degree transmission line implements a stationary wave resonator with oscillators loosely coupled to the resonator, where the wave amplitude and phase are constant along the line. In one test of this second implementation a maximum power combining efficiency of 131% was obtained with the zeroth order resonator with two tunnel diodes oscillators at 2 GHz.
摘要翻译： 描述了使用复合右/左（CRLH）超材料线中观察到的无限波长现象的隧道二极管振荡器的功率组合方法和装置。 一个实现方案采用由零度线构成的串联组合器，每个振荡器输出端口直接连接到线路并且同相并联，以同步地并联功率。 在第二实施方案中，零度传输线的一部分实现了具有与谐振器松耦合的振荡器的固定波谐振器，其中波幅和相位沿线路是恒定的。 在该第二实施方案的一个测试中，使用具有2GHz的两个隧道二极管振荡器的零级谐振器获得了131％的最大功率组合效率。
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