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公开(公告)号：US20210021290A1
公开(公告)日：2021-01-21
申请号：US16920739
申请日：2020-07-05
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
Abstract: A radio frequency signal transmission circuit includes a direct current blocking unit, a biasing impedance circuit, and a radio frequency element. The direct current blocking unit has a first terminal for receiving an input signal, and a second terminal coupled to a first bias voltage terminal. The biasing impedance circuit has a first terminal coupled to the first bias voltage terminal for providing a first bias voltage, and a second terminal coupled to a second bias voltage terminal for receiving a second bias voltage. The radio frequency element is coupled to the first bias voltage terminal, and receives and processes the input signal. When the biasing impedance circuit operates in a first mode, the biasing impedance circuit provides a first impedance. When the biasing impedance circuit operates in a second mode, the biasing impedance circuit provides a second impedance greater than the first impedance.
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公开(公告)号：US10680524B2
公开(公告)日：2020-06-09
申请号：US16290975
申请日：2019-03-04
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng , Hsien-Huang Tsai
Abstract: A voltage generator includes an oscillator, a charge pump, a smoothing capacitor, and a driving controller. The oscillator has an output. The charge pump has an input and an output, and the input of the charge pump is coupled to the output of the oscillator. The smoothing capacitor is coupled to the output of the charge pump. The driving controller is coupled to the oscillator, and generates an enable signal to adjust an operation frequency of the oscillator. The voltage generator supplies a driving voltage to a switch for driving the switch via the smoothing capacitor. The driving controller generates the enable signal according to the driving voltage.
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公开(公告)号：US10326406B2
公开(公告)日：2019-06-18
申请号：US15718079
申请日：2017-09-28
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Chih-Sheng Chen , Hong-Jia Lo
Abstract: An amplifier device includes an amplifying unit, a bias module and an impedance unit. A first end of the amplifying unit electronically connects to a voltage source. A second end of the amplifying unit receives an input signal. The first end of the amplifying unit outputs an output signal amplified by the amplifying unit. A third end of the amplifying unit connects to a first reference potential. The bias module electrically connects to the second end of the amplifying unit for providing a bias voltage to the amplifying unit. An impedance unit is electrically connects to the bias module. An impedance value of the impedance unit is variable. The bias module adjusts the amplifier's linearity according to a frequency value of the input signal, a voltage value of the voltage source or a temperature value of the amplifier device. The impedance is adjusted according to the above-mentioned values.
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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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Patent Agency Ranking
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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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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