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公开(公告)号：US20150303978A1
公开(公告)日：2015-10-22
申请号：US14636189
申请日：2015-03-03
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen
CPC classification number: H04B1/44 , H04B1/525 , H04W52/0274 , Y02D70/40
Abstract: A radio frequency (RF) switching module and a control method of the RF switching module are described. The RF switching module has 2 switches, and the control method includes starting to turn off a first switch of the RF switching module, starting to turn on a second switch of the RF switching module after the first switch is turned off for a first predetermined time, wherein starting to turn off the first switch and starting to turn on the second switch is finished during a transition period from a first mode to a second mode.
Abstract translation: 描述射频（RF）切换模块和RF切换模块的控制方法。 RF开关模块具有2个开关，控制方法包括开始关闭RF开关模块的第一开关，在第一开关断开第一预定时间之后开始接通RF开关模块的第二开关 其中开始关闭第一开关并开始接通第二开关，在从第一模式到第二模式的转变期间结束。
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公开(公告)号：US20140253088A1
公开(公告)日：2014-09-11
申请号：US14197220
申请日：2014-03-05
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Chuan-Jane Chao
IPC: G05F3/16
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：US20130321061A1
公开(公告)日：2013-12-05
申请号：US13784835
申请日：2013-03-05
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Chih-Sheng Chen
IPC: H03K17/16
CPC classification number: H03K17/16 , H03K17/161
Abstract: An RF switch includes a transistor and a compensation capacitor circuit. The compensation capacitor circuit includes a first compensation capacitor and a second compensation capacitor of the same capacitance. The compensation capacitor circuit is used to improve voltage distribution between a control node and a first node of the transistor and between the control node and a second node of the transistor.
Abstract translation: RF开关包括晶体管和补偿电容器电路。 补偿电容电路包括具有相同电容的第一补偿电容器和第二补偿电容器。 补偿电容器电路用于改善控制节点和晶体管的第一节点之间以及控制节点和晶体管的第二节点之间的电压分布。
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公开(公告)号：US20250132741A1
公开(公告)日：2025-04-24
申请号：US18389719
申请日：2023-12-19
Applicant: RichWave Technology Corp
Inventor： Tien-Yun Peng , Chih-Sheng Chen
IPC: H03F3/45
Abstract: An amplification circuit includes an amplifier, a first mirror-branch circuit, a second mirror-branch circuit, a first variable current source, a second variable current source, and an operation amplifier. The amplifier can receive an operation current and an input signal, and output the amplified input signal. The first mirror-branch circuit and the second mirror-branch circuit are coupled to the amplifier. The first variable current source is coupled to the first mirror-branch circuit and provides a first reference current. The second variable current source is coupled to the second mirror-branch circuit and provides a second reference current. The operation amplifier is coupled to the first mirror-branch circuit, the second mirror-branch circuit and the amplifier. The first reference current and the second reference current are related to the operation current.
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公开(公告)号：US12206403B2
公开(公告)日：2025-01-21
申请号：US17510399
申请日：2021-10-26
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Yi-Bin Yang
IPC: H03K17/693 , H01P1/10 , H04B1/44
Abstract: A switch device structure includes RF1-st and RF2-nd input terminals, RFA-th, RFB-th and RFC-th output terminals, P2A-th, P1B-th and P1C-th paths, and first and second common paths. The P2A-th path includes a first terminal, and a second terminal coupled to the RFA-th output terminal. The P1B-th path includes a first terminal, and a second terminal coupled to the RFB-th output terminal. The P1C-th path includes a first terminal, and a second terminal coupled to the RFC-th output terminal. The first common path is coupled to the RF2-nd input terminal and the first terminal of the P2A-th path. The second common path is coupled to the RF1-st input terminal, the first terminal of the P1B-th path, and the first terminal of the P1C-th path. The first and second common paths cross each other on different planes to form a crossover.
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Patent Agency Ranking
公开(公告)号：US12184318B2
公开(公告)日：2024-12-31
申请号：US17688916
申请日：2022-03-08
Applicant: RichWave Technology Corp.
Inventor： Yu-Siang Huang , Chih-Sheng Chen
Abstract: A radio frequency (RF) switch includes a signal terminal, a reference voltage terminal and a shunt switch path. The shunt switch path includes a first sub-shunt circuit and a second sub-shunt circuit. The second sub-shunt circuit includes a first transistor and a second transistor coupled in parallel. When switched to a first state, the RF switch has first impedance; when switched to a second state, the RF switch has second impedance; and when switched to a third state, the RF switch has third impedance. The first impedance, the second impedance, and the third impedance are different.
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公开(公告)号：US20240339972A1
公开(公告)日：2024-10-10
申请号：US18519095
申请日：2023-11-27
Applicant: RichWave Technology Corp.
Inventor： Chia-Jung Yeh , Chih-Sheng Chen
CPC classification number: H03F3/245 , H03K17/56 , H04B1/40 , H03F2200/294 , H03F2200/451
Abstract: A radio frequency circuit is provided. The radio frequency circuit includes a first terminal, a second terminal, a power amplifier, and a coupling circuit. The power amplifier is coupled between the first terminal and the second terminal. The power amplifier is configured to receive a first signal. The coupling circuit includes a first coupling terminal, a second coupling terminal, and at least one transistor. The first coupling terminal is coupled to the power amplifier and the second terminal. The at least one transistor is connected in series between the first coupling terminal and the second coupling terminal. In a coupling mode, the at least one transistor is in an at least partial cut-off state, and the at least one transistor provides a coupling signal at the second coupling terminal through capacitive coupling. The first signal is controlled according to the coupling signal.
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公开(公告)号：US12107548B2
公开(公告)日：2024-10-01
申请号：US17229809
申请日：2021-04-13
Applicant: RichWave Technology Corp.
Inventor： Pin-Yi Huang , Chih-Sheng Chen , Ching-Wen Hsu
CPC classification number: H03F1/0205 , H03F3/19 , H03G3/30 , H03F1/083 , H03F1/223
Abstract: An amplifier circuit includes an input terminal used to receive an input signal, an output terminal used to output an output signal, an amplification unit, and a phase adjustment unit. The amplification unit includes an input terminal coupled to the input terminal of the amplifier circuit, an output terminal coupled to the output terminal of the amplifier circuit, a first terminal coupled to a first voltage terminal, and a second terminal coupled to a second voltage terminal. The phase adjustment unit is coupled to the amplification unit. When the amplifier circuit is operated in a first mode, the output signal has a first phase, and when the amplifier circuit is operated in a second mode, the output signal has a second phase. A difference between the first phase and the second phase is within a predetermined range.
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公开(公告)号：US12063029B2
公开(公告)日：2024-08-13
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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120.发明公开公开(公告)号：US20240204769A1
公开(公告)日：2024-06-20
申请号：US18091343
申请日：2022-12-29
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hsien-Huang Tsai , Meng-Lun Li
IPC: H03K17/10
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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