公开(公告)号：US20150137877A1

公开(公告)日：2015-05-21

申请号：US14308931

申请日：2014-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yun Ho CHOI ,  Youn Sub NOH ,  Hong Gu JI ,  Jin Cheol JEONG ,  In Bok YOM

IPC: G05F3/16

CPC classification number: G05F3/16 ,  G05F3/205

Abstract: Provided is a bias circuit. The bias circuit includes: a first resistor connected between a ground terminal and a first node; a first bias transistor having a drain connected to the first node and a source connected to a second node; a second bias transistor having a drain connected to the second node and a source connected to a negative voltage terminal; a third bias transistor having a drain connected to the ground terminal and a source connected to a third node; and a second resistor connected between the third node and the negative voltage terminal, wherein a gate of the first bias transistor is connected to the second node; a gate of the second bias transistor is connected to the negative voltage terminal; a gate of the third bias transistor is connected to the first node; and a gate bias voltage signal is outputted through the third node.

Abstract translation: 提供偏置电路。 偏置电路包括：连接在接地端子和第一节点之间的第一电阻器; 具有连接到第一节点的漏极和连接到第二节点的源极的第一偏置晶体管; 具有连接到第二节点的漏极和连接到负电压端子的源极的第二偏置晶体管; 具有连接到所述接地端子的漏极和连接到第三节点的源极的第三偏置晶体管; 以及连接在所述第三节点和所述负电压端子之间的第二电阻器，其中所述第一偏置晶体管的栅极连接到所述第二节点; 第二偏置晶体管的栅极连接到负电压端子; 第三偏置晶体管的栅极连接到第一节点; 并且通过第三节点输出栅极偏置电压信号。

公开(公告)号：US20150116058A1

公开(公告)日：2015-04-30

申请号：US14524368

申请日：2014-10-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hong Yeol LEE ,  Man Seok UHM ,  Chang Soo KWAK ,  So Hyeun YUN ,  In Bok YOM

IPC: H01P1/20

CPC classification number: H01P7/06 ,  H01P7/10

Abstract: Provided is a radio frequency (RF) cavity filter including a tuning bolt holding member, the RF cavity filter including a top block, a bottom block to form a cavity along with the top block, a resonator disposed in the cavity, a tuning bolt to penetrate through the top block, and a tuning bolt holding member disposed to be in contact with one end of the tuning bolt to hold the tuning bolt, which may fix a position of the tuning bolt.

Abstract translation: 提供了一种包括调音螺栓保持构件的射频（RF）空腔滤波器，RF空腔滤波器包括顶部块，与顶部块一起形成空腔的底部块，设置在空腔中的谐振器，调谐螺栓 穿过顶部块，以及调谐螺栓保持构件，其布置成与调谐螺栓的一端接触以保持调谐螺栓，其可固定调谐螺栓的位置。

公开(公告)号：US20150035623A1

公开(公告)日：2015-02-05

申请号：US14450374

申请日：2014-08-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chang Soo KWAK ,  Youn Sub NOH ,  Man Seok UHM ,  So Hyeun YUN ,  Hong Yeol LEE ,  In Bok YOM

IPC: H01P1/20

CPC classification number: H01P1/207 ,  H01P1/205 ,  H01P1/2053 ,  H01P7/06

Abstract: A tunable filter device that changes a central frequency and a bandwidth is provided. The tunable filter device may include a body forming a cavity together with a cover, a resonator attached to or integrally formed on a lower surface of the cavity, a frequency-tuning element including a head and a shaft, the shaft passed through the cover and inserted in the resonator, and a cam disposed on the head to contact the head, wherein an insertion length of the shaft is controlled by the cam.

Abstract translation: 提供了改变中心频率和带宽的可调谐滤波器装置。 可调滤波器装置可以包括与盖一起形成空腔的主体，附接到腔体的下表面上或整体地形成在腔的下表面上的谐振器，包括头部和轴的频率调谐元件，轴穿过盖子， 插入在谐振器中，以及设置在头部上以接触头部的凸轮，其中轴的插入长度由凸轮控制。

公开(公告)号：US20130278332A1

公开(公告)日：2013-10-24

申请号：US13793164

申请日：2013-03-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hong Gu JI ,  In Bok YOM

IPC: H03F1/32

CPC classification number: H03F1/3241 ,  H03F1/0288 ,  H03F1/3276

Abstract: Disclosed is a Doherty amplifying apparatus and method that ensures efficiency in linearity of an input signal by linearizing an applied signal using a linearization unit by analog pre-distortion, and amplifying the linearized signal using a primary amplifier and a secondary amplifier.

Abstract translation: 公开了通过使用线性化单元通过模拟预失真线性化施加的信号并且使用主放大器和次级放大器来放大线性化信号来确保输入信号的线性度的效率的Doherty放大装置和方法。