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公开(公告)号：US10270349B2
公开(公告)日：2019-04-23
申请号：US15398726
申请日：2017-01-05
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
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.
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公开(公告)号：US20180275709A1
公开(公告)日：2018-09-27
申请号：US15839189
申请日：2017-12-12
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Chih-Sheng Chen , Tien-Yun Peng , Jhao-Yi Lin
CPC classification number: G05F3/16 , H01L27/0629 , H03F1/223 , H03F1/301 , H03F1/302 , H03F5/00 , H03F2200/18 , H03F2200/21 , H03F2200/294 , H03F2200/451
Abstract: A bias circuit includes a first transistor, a second transistor, a first resistor and a second resistor. The first end of the first transistor is coupled to a first voltage source. One end of the first resistor is coupled to the second end of the first transistor, and the other end of the first resistor is coupled to the control terminal of the first transistor. The first end of the second transistor is coupled to a second voltage source, and the second end of the second transistor is coupled to the control terminal of the first transistor. One end of the second resistor is coupled to the other end of the first resistor, and the other end of the second resistor is coupled to the control terminal of the second transistor.
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公开(公告)号：US20180234057A1
公开(公告)日：2018-08-16
申请号：US15805125
申请日：2017-11-06
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Pei-Chuan Hsieh
CPC classification number: H03F1/3241 , H03F1/0205 , H03F1/0261 , H03F1/3276 , H03F3/19 , H03F3/21 , H03F2200/18 , H03F2200/451
Abstract: A predistorter has a first capacitor and an impedance conversion circuit. A first end of the first capacitor is coupled to a first node of the amplifier. The impedance conversion circuit is used to perform an impedance conversion to provide a variable capacitance. The impedance conversion circuit has a first bias input circuit and a bipolar junction transistor (BJT). The first bias input circuit is used to receive a first input bias. A base of the BJT is coupled to an output end of the first bias input circuit and a second end of the first capacitor, a collector of the BJT is floating, and an emitter of the BJT is coupled to a second node of the amplifier.
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公开(公告)号：US10027289B2
公开(公告)日：2018-07-17
申请号：US15469566
申请日：2017-03-26
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Chang-Yi Chen
CPC classification number: H03F1/56 , H03F1/0277 , H03F1/223 , H03F3/16 , H03F3/193 , H03F3/72 , H03F2200/294 , H03F2200/387 , H03F2200/555 , H03F2203/7239
Abstract: An amplifier includes an input terminal for receiving an input signal, an output terminal for outputting an output signal, a first transistor, a second transistor having a first terminal coupled to a second terminal of the first transistor, a third transistor having a first terminal coupled to a second terminal of the second transistor, a capacitor coupled between a control terminal and a second terminal of the third transistor, a bias circuit coupled to the first terminal of the third transistor for providing a bias voltage to the third transistor, a fourth transistor having a first terminal coupled to the input terminal and a second terminal coupled to the output terminal for providing a bypass path, and a fifth transistor having a first terminal coupled to the first terminal of the first transistor and a second terminal coupled to the output terminal.
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公开(公告)号：US20170126017A1
公开(公告)日：2017-05-04
申请号：US15404215
申请日：2017-01-12
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ching-Wen Hsu
IPC: H02J4/00
CPC classification number: H02J4/00 , H03K17/693
Abstract: A switch device includes a common terminal and a selection circuit. The selection circuit includes a primary switch, a first secondary switch, and a second secondary switch. The primary switch includes a plurality of primary transistors coupled in series and is coupled to the common terminal. The first secondary switch is coupled to the primary switch and a first transmission terminal. The first secondary switch includes a plurality of first secondary transistors coupled in series. The second secondary switch is coupled to the primary switch and a second transmission terminal. The second secondary switch includes a plurality of second secondary transistors coupled in series. The number of the first secondary transistors and the number of the second secondary transistors are both greater than or equal to the number of the primary transistors.
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Patent Agency Ranking
公开(公告)号：US09343807B2
公开(公告)日：2016-05-17
申请号：US13923385
申请日：2013-06-21
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen
Abstract: An antenna system includes an antenna and N integrated passive components (IPCs). A first end of each IPC of the N IPCs is directly coupled to the 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 effect, and further improves nonlinear distortion.
Abstract translation: 天线系统包括天线和N个集成无源组件（IPC）。 N个IPC的每个IPC的第一端直接耦合到天线，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，减少寄生效应，进一步提高非线性失真。
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公开(公告)号：US20160112015A1
公开(公告)日：2016-04-21
申请号：US14886109
申请日：2015-10-19
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Chang-Yi Chen
CPC classification number: H03F1/565 , H01F27/2804 , H01F2019/085 , H01F2027/2809 , H03F3/195 , H03F3/211 , H03F3/45475 , H03F2200/387 , H03F2200/451 , H03F2200/537 , H03F2200/541 , H03F2203/45731
Abstract: A transformer has a first winding, a second winding and a third winding. The first winding is configured to receive a first signal. The second winding is magnetically coupled to the first winding and configured to generate a second signal through electromagnetic induction with the first winding, or by receiving a second input signal. The third winding is magnetically coupled to the second winding, magnetically isolated from the first winding, and configured to generate a third signal through electromagnetic induction with the second winding. The second winding is posited between the first winding and the third winding. The first winding is posited adjacent to the second winding, and the second winding is posited adjacent to the third winding.
Abstract translation: 变压器具有第一绕组，第二绕组和第三绕组。 第一绕组被配置为接收第一信号。 第二绕组被磁耦合到第一绕组，并被配置为通过利用第一绕组的电磁感应产生第二信号，或者通过接收第二输入信号。 第三绕组磁耦合到第二绕组，与第一绕组磁隔离，并且被配置为通过与第二绕组的电磁感应产生第三信号。 第二绕组位于第一绕组和第三绕组之间。 第一绕组被放置成与第二绕组相邻，并且第二绕组被放置成与第三绕组相邻。
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公开(公告)号：US12107572B2
公开(公告)日：2024-10-01
申请号：US18091343
申请日：2022-12-29
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hsien-Huang Tsai , Meng-Lun Li
CPC classification number: H03K17/102 , H03K2217/0054
Abstract: A switch device includes a first switch unit, a second switch unit, a first sub-switch unit, a second sub-switch unit, a first resistor and a second resistor. The first switch unit is coupled to a radio-frequency terminal and coupled to the second switch unit in cascode. The first sub-switch unit is coupled to the second sub-switch unit in cascode. The first sub-switch unit is further coupled between control terminals of the first switch unit and the second switch unit. The first sub-switch unit is further coupled to a node between the first resistor and the first switch unit. The second sub-switch unit is further coupled to a node between the second resistor and the second switch unit. When the first switch unit and the second switch unit are transitioned, the first sub-switch unit and the second sub-switch unit can be turned on to discharge and/or neutralize accumulated charges.
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公开(公告)号：US20240186952A1
公开(公告)日：2024-06-06
申请号：US18081625
申请日：2022-12-14
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Yu-Hsuan Chao
CPC classification number: H03F1/0205 , H03F3/193 , H03F2200/451
Abstract: An amplifying circuit includes a first transistor, a second transistor, and a switching circuit. A control terminal of the first transistor is coupled to an input terminal of the amplifying circuit, and a first terminal of the first transistor is coupled to a first reference end. The input terminal of the amplifying circuit receives a first radio frequency (RF) signal. A first terminal of the second transistor is coupled to a second terminal of the first transistor, and a second terminal of the second transistor is coupled to an output terminal of the amplifying circuit. The output terminal of the amplifying circuit outputs an amplified signal. The first transistor amplifies the first RF signal to generate a second RF signal. The switching circuit performs a switching operation to transmit the second RF signal to one of the first terminal and the control terminal of the second transistor.
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公开(公告)号：US20230361765A1
公开(公告)日：2023-11-09
申请号：US18219068
申请日：2023-07-06
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Jen Jao , Tien-Yun Peng , Chih-Sheng Chen
IPC: H03K17/0412
CPC classification number: H03K17/04123
Abstract: A switch device includes a first radio-frequency (RF) terminal, a second RF terminal, a first transistor, a second transistor, and a variable resistance element. The first transistor includes a first terminal coupled to the first RF terminal, a second terminal, and a control terminal coupled to a control signal terminal providing a control signal. The second transistor includes a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the second RF terminal, and a control terminal. The variable resistance element is coupled between the second terminal of the first transistor and a bias voltage terminal. When the first transistor and the second transistor are in a transient state, the variable resistance element provides a lower resistance. When the first transistor and the second transistor are in an ON state, the variable resistance element provides a higher resistance.
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