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公开(公告)号：US20160226140A1
公开(公告)日：2016-08-04
申请号：US15093748
申请日：2016-04-08
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen
CPC classification number: H01Q1/525 , H03H7/461 , H04B1/0053 , H04B1/18
Abstract: An antenna system includes N integrated passive components (IPCs). A first end of each IPC of the N IPCs is directly configured to couple to an antenna for receiving signals of a band corresponding to the IPC and filtering signals of bands corresponding to other IPCs of the N IPCs. The antenna system can prevent signals of various bands from interfering with each other, reduces parasitic capacitance effect, and further improves nonlinear distortion.
Abstract translation: 天线系统包括N个无源组件（IPC）。 N个IPC的每个IPC的第一端被直接配置成耦合到天线，用于接收对应于IPC的频带的信号和对应于N个IPC的其他IPC的频带的过滤信号。 天线系统可以防止各种频带的信号相互干扰，降低寄生电容效应，进一步提高非线性失真。
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公开(公告)号：US20160172969A1
公开(公告)日：2016-06-16
申请号：US14886343
申请日：2015-10-19
Applicant: Richwave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
IPC: H02M3/07
CPC classification number: H02M3/24 , H02M1/36 , H02M3/07 , H02M7/103 , H02M2003/075
Abstract: A voltage generator including an oscillator having an output, a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator, a smoothing capacitor, a resistor having an input end and an output end, wherein the input end is coupled to the charge pump and the output end is coupled to the smoothing capacitor, and a shorting element connected in parallel with the resistor and which, when turned on, causes the resistor to be at least partially bypassed, wherein the voltage generator is configured to supply voltage to a radio frequency (RF) switch via the smoothing capacitor, and a frequency of the oscillator is controlled to be faster during a switching period of the RF switch.
Abstract translation: 一种电压发生器，包括具有输出的振荡器，具有输入和输出的电荷泵，电荷泵的输入耦合到振荡器的输出，平滑电容器，具有输入端和输出端的电阻器， 其中所述输入端耦合到所述电荷泵，并且所述输出端耦合到所述平滑电容器，以及与所述电阻器并联连接的短路元件，并且当导通时使所述电阻器至少部分地被旁路，其中， 电压发生器被配置为通过平滑电容器向射频（RF）开关提供电压，并且在RF开关的开关周期期间将振荡器的频率控制得更快。
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公开(公告)号：US09088252B2
公开(公告)日：2015-07-21
申请号：US14197220
申请日：2014-03-05
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Chuan-Jane Chao
CPC classification number: H03F3/45085
Abstract: A fixed voltage generating circuit includes a current mirror, a differential pair, and a resistor coupled to the current mirror. A node of the resistor is coupled to a voltage source. The differential pair includes two resistors coupled to the voltage source to enable the differential pair outputting a stable output voltage.
Abstract translation: 固定电压产生电路包括电流镜，差分对和耦合到电流镜的电阻。 电阻器的节点耦合到电压源。 差分对包括耦合到电压源的两个电阻器，以使差分对输出稳定的输出电压。
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公开(公告)号：US20140253087A1
公开(公告)日：2014-09-11
申请号：US13865205
申请日：2013-04-18
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Chih-Sheng Chen
IPC: G05F3/16
CPC classification number: G05F3/16 , H03F3/45085 , H03F2203/45244 , H03F2203/45392 , H03F2203/45508
Abstract: A fixed voltage generating circuit includes a current mirror, a differential pair, and a resistor coupled to the current mirror. A node of the resistor is coupled to a voltage source. The differential pair includes two resistors coupled to the voltage source for enabling the differential pair to output a fixed voltage.
Abstract translation: 固定电压产生电路包括电流镜，差分对和耦合到电流镜的电阻。 电阻器的节点耦合到电压源。 差分对包括耦合到电压源的两个电阻器，用于使差分对能够输出固定电压。
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公开(公告)号：US12113495B2
公开(公告)日：2024-10-08
申请号：US17499831
申请日：2021-10-12
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Chih-Sheng Chen , Ching-Wen Hsu
CPC classification number: H03F3/505 , H03F3/45179 , H03F1/12 , H03F2200/387
Abstract: An amplifier circuit having an adjustable gain is provided. The amplifier circuit includes an input terminal, an output terminal, an amplifier, and an attenuation circuit. The input terminal receives an input signal, which is in turn received by an input terminal of the amplifier. An output terminal of the amplifier outputs the input signal that is amplified. The attenuation circuit is coupled between the output terminal of the amplifier and the output terminal to provide a plurality of attenuation to the input signal that is amplified and generate a first attenuation signal, or between the input terminal and the output terminal to provide the plurality of attenuations to the input signal and generate a second attenuation signal. A difference between an impedance value of the input terminal of the attenuation circuit and an impedance value of the output terminal of the attenuation circuit is within a predetermined range.
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Patent Agency Ranking
公开(公告)号：US12040757B2
公开(公告)日：2024-07-16
申请号：US17378802
申请日：2021-07-19
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ching-Wen Hsu , Hsien-Wei Ke
CPC classification number: H03F3/211 , H03F3/72 , H03F1/565 , H03F2200/111 , H03F2200/222 , H03F2200/372 , H03F2200/387 , H03F2203/7209
Abstract: An amplifier circuit includes a first amplifier and a second amplifier. The first amplifier receives a first signal and generates a first amplification signal accordingly. The second amplifier receives a second signal and generates a second amplification signal accordingly. The first signal is related to a first frequency band, and the second signal is related to a second frequency band different from the first frequency band. When one of the first amplifier and the second amplifier is in use, the other one of the first amplifier and the second amplifier is unused. The first amplifier and second amplifier are coupled to a reference voltage terminal through a common node. The first amplifier includes a switch coupled between the common node and a stage of the first amplifier, and the switch can be controlled for reducing the loading effect caused by the first amplifier on the second amplifier.
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公开(公告)号：US20240223133A1
公开(公告)日：2024-07-04
申请号：US18202963
申请日：2023-05-29
Applicant: RichWave Technology Corp.
Inventor： Chang-Heng Chen , Tien-Yun Peng , Chih-Sheng Chen
CPC classification number: H03F1/30 , H03F3/245 , H03F2200/451
Abstract: A radio-frequency circuit can include a power amplifier, a first bias circuit and a second bias circuit. The power amplifier can include an input terminal used to receive a radio-frequency signal, and an output terminal used to output an amplified radio-frequency signal. The first bias circuit can include a first output terminal coupled to the input terminal of the power amplifier through a common node. The second bias circuit can include a second output terminal and a current adjustment circuit, where the second output terminal can be coupled to the common node, and the current adjustment circuit can include a transistor. The transistor can include a first terminal coupled to the second output terminal, a second terminal used to receive a reference voltage, and a control terminal.
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公开(公告)号：US11899048B2
公开(公告)日：2024-02-13
申请号：US18110865
申请日：2023-02-16
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Hsien-Huang Tsai , Chih-Sheng Chen
CPC classification number: G01R19/0046 , H03K19/20
Abstract: A voltage state detector includes a voltage drop circuit, a pull-down circuit, a load circuit, a transistor, a pull-up circuit, first and second output terminals, and a logic circuit. The pull-down circuit is coupled to the voltage drop circuit. The transistor has a first terminal coupled to the load circuit, a second terminal coupled to the pull-down circuit, and a control terminal coupled to the voltage drop circuit. The pull-up circuit is coupled to the load circuit and the voltage drop circuit. The first output terminal is coupled to the first terminal of the transistor for outputting a first state determination signal. The second output terminal is coupled to the voltage drop circuit for outputting a second state determination signal. The logic circuit includes a NOR gate for performing an NOR operation on the first state determination signal and the second state determination signal to output a control signal.
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公开(公告)号：US11764775B2
公开(公告)日：2023-09-19
申请号：US17496766
申请日：2021-10-08
Applicant: RichWave Technology Corp.
Inventor： Chun-Hao Wei , Chih-Sheng Chen
IPC: H03K17/56
CPC classification number: H03K17/56
Abstract: The switch device includes a first circuit. The first circuit has a first end coupled between a first terminal and a second terminal, and the first circuit has the second end coupled between the first terminal and the second terminal or coupled to a third terminal. The first circuit includes a first switch and a second switch. The first switch is coupled between the first end and the second end of the first circuit and is turned on or off according to a first control signal. The second switch is connected to the first switch in parallel and is turned on or off according to a second control signal. The first switch and the second switch include transistors of the same type. In a surge protection mode, the second switch is turned on to dissipate the surge current.
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公开(公告)号：US11757416B2
公开(公告)日：2023-09-12
申请号：US17219902
申请日：2021-04-01
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Yun-Jhu Lai
CPC classification number: H03F1/56 , H03F3/195 , H03F2200/105 , H03F2200/318 , H03F2200/451
Abstract: A matching circuit includes an input terminal, an output terminal, a first impedance component, a first set of switching devices, a second impedance component, a second set of switching devices and a controller. The first impedance component includes a first terminal coupled between the input terminal and the output terminal, and a second terminal. The first set of switching devices is coupled to the second terminal of the first impedance component, the controller and a reference terminal. The second impedance component includes a first terminal coupled between the second terminal of the first impedance component and the first set of switching devices, and a second terminal. The second set of switching devices is coupled to the second terminal of the second impedance component, the controller and the reference terminal. The controller controls the first set of switch devices and the second set of switch devices according to a detection signal.
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