公开(公告)号：US20090237177A1

公开(公告)日：2009-09-24

申请号：US12077391

申请日：2008-03-19

Applicant: Tzyh-Ghuang Ma ,  Chin-Feng Chou

Inventor： Tzyh-Ghuang Ma ,  Chin-Feng Chou

IPC: H01P5/20

CPC classification number: H03D7/02

Abstract: A miniaturized microwave sampler has a first substrate and a second substrate mounted together on a mounting surface, a ground layer formed on the mounting surface, a slot-line formed on the ground layer. A first microstrip line is formed on a top surface of the first substrate and has a first end as a local pulse signal input port. A T-shaped second microstrip line is formed on a bottom surface of the second substrate and achieves an electromagnetic coupling with the first microstrip line through the slot-line. The second microstrip line has a longitudinal segment and a latitudinal segment both being perpendicularly connected together. The longitudinal segment has one end as a radio frequency signal input port. The latitudinal segment further extends to form two output ports.

Abstract translation: 小型化微波取样器具有安装在安装面上的第一基板和第二基板，形成在安装面上的接地层，形成在接地层上的槽线。 第一微带线形成在第一基板的顶表面上，并且具有作为本地脉冲信号输入端口的第一端。 T形第二微带线形成在第二基板的底面上，通过槽线实现与第一微带线的电磁耦合。 第二微带线具有垂直连接在一起的纵向段和横向段。 纵向段具有作为射频信号输入端口的一端。 纬度段进一步延伸以形成两个输出端口。

公开(公告)号：US20090295667A1

公开(公告)日：2009-12-03

申请号：US12325366

申请日：2008-12-01

Applicant: Tzyh-ghuang Ma ,  Ren-ching Hua ,  Jyh-woei Tsai

Inventor： Tzyh-ghuang Ma ,  Ren-ching Hua ,  Jyh-woei Tsai

IPC: H01Q9/16

CPC classification number: H01Q1/2225 ,  H01Q9/26 ,  H01Q9/285 ,  H01Q19/30

Abstract: An ultra high frequency antenna includes a first plane, a second plane opposite to the first plane by a distance, a driven dipole, at least a parasitic element having an indentation, and a balun. The balun includes a coplanar strip line and a microstrip line which has a first strip, a second strip area parallel to the first strip, and a third strip perpendicular to the first and second strips. The coplanar strip line coupled to a truncated ground plane with two narrow slots. The present planer antenna features a compact size, wide impedance bandwidth, moderate gain, and excellent front-to-back ratio. This antenna is well suitable for the applications in RFID handheld readers.

Abstract translation: 超高频天线包括第一平面，与第一平面相对距离的第二平面，从动偶极子，至少具有凹陷的寄生元件和平衡 - 不平衡变换器。 平衡 - 不平衡转换器包括共面带状线和微带线，其具有第一条带，平行于第一条带的第二条带区域和垂直于第一和第二条带的第三条带。 共面带状线连接到具有两个窄槽的截面接地平面。 本平板天线具有体积小巧，阻抗宽带宽，中等增益和优异的前后比。 该天线适用于RFID手持式读取器中的应用。

公开(公告)号：US20080048799A1

公开(公告)日：2008-02-28

申请号：US11773962

申请日：2007-07-06

Applicant: Chao-Wei Wang ,  Tzyh-Ghuang Ma ,  Chang-Fa Yang

Inventor： Chao-Wei Wang ,  Tzyh-Ghuang Ma ,  Chang-Fa Yang

IPC: H01P1/18

CPC classification number: H01P1/2039

Abstract: A discontinuous transmission line structure includes an input transmission line, an output transmission line, a plurality of meandered inductors, coupled in series between the input transmission line and the output transmission line, and a plurality of shunted to grounded capacitors, coupled between the meandered inductors. The discontinuous transmission line structure has a high inductance and a high capacitance, and can effectively reduce the size by increasing the transmission line load impedance and capacitance while the characteristic impedance of the transmission line structure remains.

Abstract translation: 不连续的传输线结构包括输入传输线，输出传输线，串联耦合在输入传输线和输出传输线之间的多个蜿蜒的电感器，以及多个分流到接地的电容器，耦合在蜿蜒的电感器 。 不连续传输线结构具有高电感和高电容，并且可以通过增加传输线负载阻抗和电容而有效地减小尺寸，同时保持传输线结构的特性阻抗。