公开(公告)号：US10181818B2

公开(公告)日：2019-01-15

申请号：US15202635

申请日：2016-07-06

Applicant: Airoha Technology Corp.

Inventor： Heng-Chih Lin ,  Chien-Kuang Lee ,  Yao-Te Chiu

IPC: H03F3/04 ,  H03F1/02 ,  H03F1/56 ,  H03F3/19 ,  H03F1/22 ,  H03F1/26 ,  H03F3/193 ,  H03F3/72

Abstract: A low-noise amplifier (LNA), a folded low-noise amplifier (folded LNA) and an amplifier circuit module are provided. The LNA includes a plurality of radio frequency (RF) input stages, at least one bias transistor and at least one radio frequency (RF) output stage. The bias transistor is connected to the RF input stages to provide a DC bias source to one of the RF input stages for isolating others of the RF input stages. The RF output stage is connected in parallel with the RF input stages, which share an adjustable input inductor.

公开(公告)号：US20180123621A1

公开(公告)日：2018-05-03

申请号：US15782898

申请日：2017-10-13

Applicant: Airoha Technology Corp.

Inventor： Heng-Chih Lin ,  Chien-Kuang Lee

IPC: H04B1/00 ,  H04B7/06

CPC classification number: H04B1/0064 ,  H04B7/0602 ,  H04W88/06

Abstract: A radio frequency (RF) system including a transceiver and an RF front-end circuit is provided. The transceiver has a signal transmitting port, which selectively transmits a first RF signal or a second RF signal, wherein the first RF signal corresponds to a first communication mode and a first band, and the second RF signal corresponds to a second communication mode and a second band. The RF front-end circuit is coupled to the transceiver, and includes a transmission path switch and an antenna switch. The transmission path switch electrically couples the signal transmitting port to a selected signal transmission path of a plurality of signal transmission paths. The antenna switch is coupled to the signal transmission paths, and electrically couples the selected signal transmission path to the antenna module.

公开(公告)号：US09755593B2

公开(公告)日：2017-09-05

申请号：US14983731

申请日：2015-12-30

Applicant: AIROHA TECHNOLOGY CORP.

Inventor： Chien-Kuang Lee ,  Heng-Chih Lin

IPC: H04W52/00 ,  H03F3/24 ,  H03F1/02 ,  H03F1/32 ,  H03F3/195 ,  H03F3/19 ,  H03F3/21 ,  H04B1/40 ,  H04W52/22

CPC classification number: H03F3/24 ,  H03F1/0227 ,  H03F1/0266 ,  H03F1/3223 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F2200/451 ,  H03F2200/555 ,  H04B1/40 ,  H04W52/226

Abstract: The present invention relates to a method for compensating a power amplification unit of a wireless RF module that includes a baseband unit, a RF transceiver unit, a power amplification unit and a control unit. The baseband unit is connected to the power amplification unit through the control unit and the RF transceiver unit. Based on the characteristic of the power amplification unit, the baseband unit provides a control signal to regulate the output signal characteristic of the power amplification unit, or provides a RF transceiver unit control signal to regulate the characteristics of the RF signal being transmitted by the RF transceiver unit to the power amplification unit, or to regulate the characteristics of the baseband signal being transmitted to the RF transceiver unit, enabling the characteristics of the output signal of the power amplification unit to meet the specifications of the related system.

公开(公告)号：US09544010B2

公开(公告)日：2017-01-10

申请号：US14061900

申请日：2013-10-24

Applicant: AIROHA TECHNOLOGY CORP.

Inventor： Heng-Chih Lin ,  Chien-Kuang Lee

IPC: H04B1/44

CPC classification number: H04B1/44

Abstract: An RF front-end module includes a transmitting/receiving terminal, a control unit, a first transmitting block and a second transmitting block. The first transmitting block and the second transmitting block connect the transmitting/receiving terminal and the control unit. The control unit controls on or off status of the first transmitting block and the second transmitting block. Thus, the first transmitting block and the second transmitting block can send a signal to the transmitting/receiving terminal directly without pass through any switch unit, avoiding extra signal loss on switch unit.

Abstract translation: RF前端模块包括发送/接收终端，控制单元，第一发送块和第二发送块。 第一发送块和第二发送块连接发送/接收终端和控制单元。 控制单元控制第一发送块和第二发送块的开或关状态。 因此，第一发送块和第二发送块可以直接向发送/接收终端发送信号，而不通过任何开关单元，从而避免开关单元上的额外信号丢失。

公开(公告)号：US09450576B2

公开(公告)日：2016-09-20

申请号：US14474543

申请日：2014-09-02

Applicant: AIROHA TECHNOLOGY CORP.

Inventor： Chien-Kuang Lee

IPC: H03K17/16 ,  H03K17/06 ,  H03K17/693

CPC classification number: H03K17/16 ,  H03K17/063 ,  H03K17/693 ,  H03K2017/066

Abstract: A switching device having a good isolation characteristic is disclosed. The switching device comprises a switch unit and a control unit, wherein the control unit is connected to a power supply terminal, and connected to the switch unit via a control line and a power line. The control unit comprises a voltage regulator unit that is electrically connected to the power supply terminal and the power line of the switch unit. When the switch unit enters standby mode, the control unit provides an isolation voltage to the switch unit to effectively enhance the isolation characteristic of the switching device in the standby mode.

Abstract translation: 公开了具有良好隔离特性的开关装置。 开关装置包括开关单元和控制单元，其中控制单元连接到电源端子，并通过控制线和电源线连接到开关单元。 控制单元包括电连接到电源端子和开关单元的电力线的电压调节器单元。 当开关单元进入待机模式时，控制单元向开关单元提供隔离电压，以有效提高待机模式下开关器件的隔离特性。