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    • 4. 发明授权
    • Amplifier system and method
    • 放大器系统及方法
    • US07151411B2
    • 2006-12-19
    • US10980394
    • 2004-11-03
    • James MartinIzzac KhayoRich KeenanValter KaravanicGreg Mendolia
    • James MartinIzzac KhayoRich KeenanValter KaravanicGreg Mendolia
    • H03F3/04
    • H03F3/68H03F1/0211H03F1/565H03F3/189H03F2200/222H03F2200/318H03F2200/387H03F2200/451H04B1/0458
    • An embodiment of the present invention provides an amplifier system, comprising at least one variable impedance matching network, the output of which provides the input to at least one amplifier stage or provides an output of the power amplifier itself, and a bias network associated with the at least one amplifier stage. The amplifier system may further comprise a controller enabling impedance control to the at least one variable impedance matching network and a supply voltage provided to the at least one variable impedance network and/or the at least one amplifier stage and wherein the at least one variable impedance network and the at least one amplifier stage may be a plurality of impedance networks connected to a plurality of amplifier stages. The at least one variable impedance network may include at least one variable capacitor and the at least one variable capacitor may be a voltage tunable dielectric capacitor which may include Parascan® voltage tunable dielectric material.
    • 本发明的实施例提供了一种放大器系统,其包括至少一个可变阻抗匹配网络,其输出为至少一个放大器级提供输入或提供功率放大器本身的输出,以及与该功率放大器本身相关联的偏置网络 至少一个放大器级。 放大器系统还可以包括控制器,其实现至少一个可变阻抗匹配网络的阻抗控制和提供给至少一个可变阻抗网络和/或至少一个放大器级的电源电压,并且其中所述至少一个可变阻抗 网络,并且所述至少一个放大器级可以是连接到多个放大器级的多个阻抗网络。 所述至少一个可变阻抗网络可以包括至少一个可变电容器,并且所述至少一个可变电容器可以是可以包括Parascan(R)电压可调电介质材料的电压可调介质电容器。
    • 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。
    • 6. 发明申请
    • Amplifier system and method
    • 放大器系统及方法
    • US20050206457A1
    • 2005-09-22
    • US10980394
    • 2004-11-03
    • James MartinIzzac KhayoRich KeenanValter KaravanicGreg Mendolia
    • James MartinIzzac KhayoRich KeenanValter KaravanicGreg Mendolia
    • H03F1/02H03F1/56H03F3/189H03F3/191H03F3/68
    • H03F3/68H03F1/0211H03F1/565H03F3/189H03F2200/222H03F2200/318H03F2200/387H03F2200/451H04B1/0458
    • An embodiment of the present invention provides an amplifier system, comprising at least one variable impedance matching network, the output of which provides the input to at least one amplifier stage or provides an output of the power amplifier itself, and a bias network associated with the at least one amplifier stage. The amplifier system may further comprise a controller enabling impedance control to the at least one variable impedance matching network and a supply voltage provided to the at least one variable impedance network and/or the at least one amplifier stage and wherein the at least one variable impedance network and the at least one amplifier stage may be a plurality of impedance networks connected to a plurality of amplifier stages. The at least one variable impedance network may include at least one variable capacitor and the at least one variable capacitor may be a voltage tunable dielectric capacitor which may include Parascan® voltage tunable dielectric material.
    • 本发明的实施例提供了一种放大器系统,其包括至少一个可变阻抗匹配网络,其输出为至少一个放大器级提供输入或提供功率放大器本身的输出,以及与该功率放大器本身相关联的偏置网络 至少一个放大器级。 放大器系统还可以包括控制器,其实现至少一个可变阻抗匹配网络的阻抗控制和提供给至少一个可变阻抗网络和/或至少一个放大器级的电源电压,并且其中所述至少一个可变阻抗 网络,并且所述至少一个放大器级可以是连接到多个放大器级的多个阻抗网络。 所述至少一个可变阻抗网络可以包括至少一个可变电容器,并且所述至少一个可变电容器可以是可以包括Parascan(R)电压可调电介质材料的电压可调介质电容器。
    • 7. 发明申请
    • RF ID tag reader utlizing a scanning antenna system and method
    • RF ID标签阅读器利用扫描天线系统和方法
    • US20050113138A1
    • 2005-05-26
    • US10858016
    • 2004-06-01
    • Greg MendoliaOm GuptaCornelis du Toit
    • Greg MendoliaOm GuptaCornelis du Toit
    • G06K7/08G06K7/10H01Q1/42H01Q3/36H01Q9/04H01Q21/20H01Q25/00H04M1/00G08B13/14H04B1/38
    • G01S5/04G01S5/12G01S13/878G06K7/10079G06K7/10336G06K7/10346H01Q1/42H01Q3/36H01Q9/0407H01Q21/205H01Q25/00
    • An RF ID card reader, comprising, RF ID circuitry to generate an RF ID signal, a transceiver in communication with the RF ID circuitry, and an antenna associated with the transceiver for scanning an area for at least one tag and establishing communication with the at least one tag, the antenna capable of creating a plurality of field focuses. Further, the RF ID card reader of the present invention may provide that the plurality of field focuses may be a near field focus and a far field focuse. Also, the field focuses may be created by a scanning antenna array. An embodiment of the present invention may also include at least one conducting curtain associated with the card reader, wherein the at least one conducting curtain may be capable of enhancing reception of the RF signals by reflecting RF signals in the area. An embodiment may also provide for at least one element and at least one phase shifter in the scanning antenna array be capable of being used as a multiple input and multiple output (MIMO) system to maximize information extracted from the RF signals.
    • 一种RF ID读卡器,包括用于产生RF ID信号的RF ID电路,与RF ID电路通信的收发器,以及与收发器相关联的天线,用于扫描至少一个标签的区域并建立与该位置的通信 至少一个标签,能够创建多个场焦点的天线。 此外,本发明的RF ID读卡器可以提供多个场聚焦可以是近场聚焦和远场聚焦。 此外,场聚焦可以由扫描天线阵列产生。 本发明的实施例还可以包括与读卡器相关联的至少一个导电帘幕,其中所述至少一个导电帘幕可以通过在该区域中反射RF信号来增强对RF信号的接收。 实施例还可以提供至少一个元件,并且扫描天线阵列中的至少一个移相器能够被用作多输入和多输出(MIMO)系统以最大化从RF信号提取的信息。