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    • 4. 发明申请
    • Second order bandpass filter
    • 二阶带通滤波器
    • US20060279380A1
    • 2006-12-14
    • US11150309
    • 2005-06-10
    • Shyh-Jong ChungChun-Fu Chang
    • Shyh-Jong ChungChun-Fu Chang
    • H03H7/01
    • H03H7/09H03H7/1708H03H7/1725H03H7/1775
    • A second-order bandpass filter having an improved frequency response is disclosed, in which a grounding capacitor is connected electrically to a two-port network as a feedback path so as to provide two finite transmission zeros. With the two transmission zeros, signals of second harmonic frequency and GSM signals may be blocked out from the pass band of the filter and thus filtered out. As such, the filter may be utilized in wireless local area network (WLAN) application. Further, since no extremely small value component is used within the filter, the frequency response may not be influenced by a manufacturing process of the filter. In addition, the thus formed filter has a relatively smaller volume.
    • 公开了具有改善的频率响应的二阶带通滤波器,其中接地电容器电连接到作为反馈路径的双端口网络,以便提供两个有限的传输零点。 利用两个传输零点,二次谐波频率和GSM信号的信号可能被从滤波器的通带中阻挡出来并被滤除。 因此,可以在无线局域网(WLAN)应用中使用该滤波器。 此外,由于在滤波器内没有使用非常小的值分量,所以频率响应可能不受滤波器的制造过程的影响。 另外,这样形成的过滤器具有相对较小的体积。
    • 5. 发明授权
    • Planar inverted-F antenna with extended grounding plane
    • 具有扩展接地面的平面倒F天线
    • US07782270B2
    • 2010-08-24
    • US12153738
    • 2008-05-23
    • Shyh-Jong ChungChing-Wei LingYu-Chiang Cheng
    • Shyh-Jong ChungChing-Wei LingYu-Chiang Cheng
    • H01Q1/48H01Q9/38
    • H01Q9/0421H01Q1/243H01Q5/371
    • Disclosed is a planar inverted-F antenna with an extended grounding plane. The planar inverted-F antenna has a grounding metal plate having a selected side edge on which the extended grounding plane is formed and has a predetermined height. At least one antenna signal radiating plate is connected to the grounding metal plate by a short-circuit piece and is substantially parallel to and spaced from the grounding metal plate by a distance. A feeding point extends from the antenna signal radiating plate in a direction toward the grounding metal plate and corresponds to the extended grounding plane with a predetermined gap therebetween. With the arrangement of the extended grounding plane, the impedance matching of the antenna is improved and the impedance bandwidth of the antenna is increased.
    • 公开了具有扩展接地平面的平面倒F天线。 平面倒F天线具有接地金属板,所述接地金属板具有选定的侧边缘,所述扩展接地平面形成在该边缘上并具有预定高度。 至少一个天线信号辐射板通过短路片连接到接地金属板,并且与接地金属板基本上平行并间隔一定距离。 馈电点从天线信号辐射板沿着接地金属板的方向延伸,并且对应于延伸的接地平面,其间具有预定的间隙。 随着扩展接地平面的布置,天线的阻抗匹配得到改善,天线的阻抗带宽增加。
    • 7. 发明申请
    • PRINTED MONOPOLE SMART ANTENNA FOR WLAN AP/ROUTER
    • 用于WLAN AP /路由器的打印单声道SMART天线
    • US20090079657A1
    • 2009-03-26
    • US12044453
    • 2008-03-07
    • Shyh-Jong ChungYen-Chih Liu
    • Shyh-Jong ChungYen-Chih Liu
    • H01Q3/24
    • H01Q3/44H01Q1/2291H01Q1/36H01Q1/48H01Q19/32
    • A printed monopole smart antenna is provided. The smart antenna includes a monopole antenna having a plane for receiving and transmitting a signal, two conductors for directing and/or reflecting the signal to the monopole antenna respectively, and a circuit device electrically connected between the first and second conductors, for selectively switching the first and second conductors to determine an operation mode of the smart antenna. The smart antenna further has at least a groove in the ground for concentrating the current distribution and solving the influence of the antenna gain to the ground size. The sequence of the antenna pattern of the smart antenna is randomly arranged, depending on user's situation. When a plurality of printed monopole smart antennas are disposed on different directions of the WLAN AP/router, the omnidirectional radiation pattern will be obtained and the antenna gain will be increased.
    • 提供印刷的单极智能天线。 智能天线包括具有用于接收和发送信号的平面的单极天线,分别用于将信号引导和/或反射到单极天线的两个导体以及电连接在第一和第二导体之间的电路装置,用于选择性地切换 第一和第二导体,以确定智能天线的操作模式。 智能天线还在地面上至少有一个凹槽用于集中电流分布并且将天线增益的影响解决到地面尺寸。 根据用户情况,智能天线的天线方向图序列随机排列。 当多个印刷的单极智能天线设置在WLAN AP /路由器的不同方向时,将获得全向辐射图,并且天线增益将增加。
    • 10. 发明授权
    • Wide frequency band planar antenna
    • 宽频带平面天线
    • US07253772B2
    • 2007-08-07
    • US11164482
    • 2005-11-24
    • Sheng-Yuan ChiShyh-Jong ChungYu-Cheng Chen
    • Sheng-Yuan ChiShyh-Jong ChungYu-Cheng Chen
    • H01Q1/24
    • H01Q1/38H01Q1/243H01Q9/0421H01Q9/40H01Q9/42
    • A wide frequency band planar antenna comprises an elongated portion, substantially parallel to a circumferential edge of a ground pattern and comprising one end connected to a feeding transmission line, wherein there is a gap between the elongated portion and the circumferential edge of the ground pattern; a body stub and an impedance-matching-adjusting pattern for adjusting an impedance matching between the wide frequency band planar antenna and the feeding transmission line; wherein the gap value is less than 2 mm so as to enable the wide frequency band antenna to operate at a wide range of frequencies ranging from 2.3 GHz to near 6 GHz, thereby allowing the wide frequency band antenna to be applied in both WiFi LAN and WiMAX MAN.
    • 宽频带平面天线包括基本上平行于接地图案的圆周边缘的细长部分,并且包括连接到馈电传输线的一端,其中在细长部分和接地图案的周缘之间存在间隙; 主体短截线和用于调整宽频带平面天线与馈送传输线之间的阻抗匹配的阻抗匹配调整模式; 其中间隙值小于2mm,以使得宽频带天线能够在范围从2.3GHz到接近6GHz的宽范围内工作,从而允许宽频带天线应用于WiFi LAN和 WiMAX MAN。