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    • 5. 发明授权
    • Tunable patch antenna
    • 可调式贴片天线
    • US06501427B1
    • 2002-12-31
    • US09919776
    • 2001-07-31
    • James D. LillyWilliam E. McKinzie, IIIGreg MendoliaAndrew Humen, Jr.
    • James D. LillyWilliam E. McKinzie, IIIGreg MendoliaAndrew Humen, Jr.
    • H01Q138
    • H01Q9/0435H01Q1/38H01Q9/0407H01Q9/0421H01Q9/0442H01Q9/065H01Q19/005H01Q21/245
    • A patch antenna is composed of a segmented patch and MEMS switches which are built on a substrate. The patch segments of the segmented patch can be electrically connected to each other by the MEMS switches to form a contiguous patch and optional tuning strips and to connect or block RF between the contiguous patch and the optional tuning strips. When RF is connected between the tuning strips and the contiguous patch, the tuning strips increase the effective length of the contiguous patch and lower the antenna's resonant frequency, thereby allowing the antenna to be frequency tuned electrically over a relatively broadband of frequencies. When the tuning strips are connected to the patch in other than a symmetrical pattern, the antenna pattern of the antenna can be changed. In another aspect of the invention, the optional tuning strips are continuous structures that are formed by connecting patch segments using switches. A planar inverted F antenna (PIFA) is also provided with one or more tuning strips spaced from the lid of the PIFA and with switches to connect or block RF between the lid of the PIFA and the tuning strips.
    • 贴片天线由分段贴片和建立在基底上的MEMS开关组成。 分段贴片的贴片段可以通过MEMS开关彼此电连接,以形成连续的贴片和可选的调整条,并连接或阻止相邻贴片和可选调谐条之间的RF。 当RF连接在调谐带和连续的贴片之间时,调谐带增加了连续贴片的有效长度并降低了天线的谐振频率,从而允许天线在频率相对较宽的频率上进行电调谐。 当调谐带与对称图案不同的贴片连接时,可改变天线的天线方向图。 在本发明的另一方面,可选调谐带是通过使用开关连接补片段形成的连续结构。 平面倒F天线(PIFA)还具有与PIFA的盖子间隔开的一个或多个调谐带,以及用于连接或阻挡PIFA的盖子和调谐带之间的RF的开关。
    • 10. 发明授权
    • Reduced weight artificial dielectric antennas and method for providing the same
    • 减少人造介质天线的重量和提供它的方法
    • US06567048B2
    • 2003-05-20
    • US09917291
    • 2001-07-26
    • William E. McKinzie, IIIGreg Mendolia
    • William E. McKinzie, IIIGreg Mendolia
    • H01Q136
    • H01Q9/0407H01Q1/38H01Q9/27
    • An artificial anisotropic dielectric material can be used as a microstrip patch antenna substrate. The artificial dielectric can be easily designed for the purpose of weight reduction. Preferably, the artificial dielectric is comprised of a periodic stack of low and high permittivity layers. The layers can be oriented vertically below the patch to support electric fields consistent with desired resonant modes. Substrates may be engineered for both linearly and circularly polarized patch antennas. Antenna weight can be reduced to ⅙th up to {fraction (1/30)}th of the original weight using different types of high permittivity layers. This concept has numerous applications in electrically small and lightweight antenna elements such as PIFA antennas. In accordance with one aspect of the invention, the artificial dielectric is comprised of an interlocking structure of low and high permittivity layers for ease of assembly and for overall stability. In accordance with another aspects the high permittivity layers can be comprised of FSS cards, and can include metallized tabs for further simplification of assembly.
    • 可以使用人造各向异性介电材料作为微带贴片天线基板。 人造电介质可以容易地设计用于减轻重量。 优选地,人造电介质由低介电常数层和高介电常数层的周期性堆叠构成。 层可以垂直地定向在贴片下方以支持与期望的谐振模式一致的电场。 衬底可以被设计用于线性和圆偏振贴片天线。 使用不同类型的高介电常数层,天线重量可以减少到原始重量的1/30。 该概念在诸如PIFA天线的电小型和轻量级天线元件中具有许多应用。 根据本发明的一个方面,人造电介质包括低介电常数层和高介电常数层的互锁结构,以便于组装和整体稳定性。 根据另一方面,高电容率层可以由FSS卡组成,并且可以包括用于进一步简化组装的金属化接片。