-
公开(公告)号：US20230179194A1
公开(公告)日：2023-06-08
申请号：US17565475
申请日：2021-12-30
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.
-
32.发明申请公开(公告)号：US20220385241A1
公开(公告)日：2022-12-01
申请号：US17356467
申请日：2021-06-23
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
Abstract: A power amplifier includes a transistor, a temperature sensor and a filter. The transistor is used to receive a bias signal and amplify a radio frequency (RF) signal. The temperature sensor is arranged in proximity to the transistor, and is used to detect a temperature of the transistor to provide a voltage signal at a control node accordingly. The filter is coupled to the temperature sensor and is used to filter the voltage signal to generate a filtered voltage. The bias signal is adjusted according to the filtered voltage.
-
公开(公告)号：US11296732B2
公开(公告)日：2022-04-05
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.
-
公开(公告)号：US11199864B1
公开(公告)日：2021-12-14
申请号：US17138855
申请日：2020-12-30
Applicant: RichWave Technology Corp.
Inventor： Chia-Jung Yeh , Tien-Yun Peng , Chih-Sheng Chen
Abstract: A voltage controlled circuit includes a tracking circuit, an operational amplifier, a transistor, a feedback circuit and a sample and hold circuit. The tracking circuit generates an updated enabling voltage according to an enabling voltage, a sample enabling voltage and a sample reference voltage. The operational amplifier includes a first input terminal used to receive an input voltage, a second input terminal used to receive a feedback voltage, and an output terminal used to output a control voltage. The transistor includes a control terminal used to receive the control voltage, a first terminal used to receive a reference voltage, and a second terminal used to output a regulated voltage. The feedback circuit generates the feedback voltage according to the regulated voltage. The sample and hold circuit is used to sample the input voltage to generate the sample enabling voltage, and sample the feedback voltage to generate the sample reference voltage.
-
公开(公告)号：US10797703B2
公开(公告)日：2020-10-06
申请号：US16691503
申请日：2019-11-21
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
IPC: H03B1/00 , H03K3/00 , H03K19/0185 , H03K3/037
Abstract: A driving apparatus is provided. A first stage inverter circuit and a second stage inverter circuit respectively generate a first output signal and a second output signal according to a first voltage dividing control signal and a second voltage dividing control signal, wherein the first output signal and the second output signal are respectively output to the second-stage inverter circuit and the first-stage inverter circuit to appropriately control the gate voltages of transistors of pull-up circuit and the pull-down circuit in the first-stage inverter circuit and the second-stage inverter circuit, so that source-drain voltages differences of the transistors can be more evenly distributed.
-
Patent Agency Ranking
公开(公告)号：US10707815B2
公开(公告)日：2020-07-07
申请号：US16406026
申请日：2019-05-08
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hung-Chia Lo , Tien-Yun Peng
Abstract: An amplifier device includes an amplifying unit, a bias module, an impedance unit and an adjusting module. The amplifying unit has a first end coupled to a voltage source and used for outputting an output signal amplified by the amplifying unit, a second end used for receiving an input signal, and a third end coupled to a first reference potential terminal. The bias module is coupled to the second end of the amplifying unit, and provides a bias voltage to the amplifying unit and adjusts linearity of the amplifier device according to a source voltage from the voltage source. The impedance unit is coupled to the bias module and used to receive a control voltage to adjust an impedance value of the impedance unit. The adjusting module is used to output the control voltage to the impedance unit according to the source voltage and a reference voltage.
-
公开(公告)号：US20200044613A1
公开(公告)日：2020-02-06
申请号：US16293666
申请日：2019-03-06
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hung-Chia Lo , Tien-Yun Peng
Abstract: An impedance circuit includes a first impedance terminal, a second impedance terminal, a first transistor, a second transistor, a low frequency signal blocking element, and a current-voltage transform circuit. The first transistor is coupled to the first impedance terminal, and controlled by a first voltage. The second transistor is coupled to the first impedance terminal, and controlled by a second voltage. The low frequency signal blocking element is coupled to the first transistor and the second impedance terminal. The current-voltage transform circuit is coupled to the first impedance terminal. The current-voltage transform circuit adjusts a terminal voltage at the first terminal of the current-voltage transform circuit according to a current flowing through the current-voltage transform circuit. The impedance circuit provides impedance between the first and the second impedance terminals according to the terminal voltage and the first voltage.
-
公开(公告)号：US20190267949A1
公开(公告)日：2019-08-29
申请号：US16406026
申请日：2019-05-08
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hung-Chia Lo , Tien-Yun Peng
Abstract: An amplifier device includes an amplifying unit, a bias module, an impedance unit and an adjusting module. The amplifying unit has a first end coupled to a voltage source and used for outputting an output signal amplified by the amplifying unit, a second end used for receiving an input signal, and a third end coupled to a first reference potential terminal. The bias module is coupled to the second end of the amplifying unit, and provides a bias voltage to the amplifying unit and adjusts linearity of the amplifier device according to a source voltage from the voltage source. The impedance unit is coupled to the bias module and used to receive a control voltage to adjust an impedance value of the impedance unit. The adjusting module is used to output the control voltage to the impedance unit according to the source voltage and a reference voltage.
-
公开(公告)号：US20180329443A1
公开(公告)日：2018-11-15
申请号：US15810148
申请日：2017-11-13
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
CPC classification number: G05F3/262 , H03F1/0205 , H03F1/223 , H03F3/193 , H03F3/195 , H03F2200/168 , H03F2200/18 , H03F2200/267 , H03F2200/301 , H03F2200/312 , H03F2200/451
Abstract: A current mirror device includes an input end for receiving an input signal, an output end for outputting an amplified signal of the input signal, first through third transistors, and an operational amplifier. The first transistor includes a first end coupled to first reference current and a second end coupled to a bias voltage. The control end of the second transistor is coupled to the input end. The third transistor includes a first end coupled to the output end, a second end coupled to the first end of the second transistor and a control end coupled to a reference voltage. The operational amplifier is configured to keep a first voltage and a second voltage at substantially the same level, wherein the first voltage is obtained on the first end of the first transistor and the second voltage is obtained on the first end of the second transistor. Therefore, the reference current flowing through the first transistor can be accurately amplified to a desired value and mirrored to become load current flowing through the second transistor.
-
40.发明申请公开(公告)号：US20180323780A1
公开(公告)日：2018-11-08
申请号：US15825116
申请日：2017-11-29
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
Abstract: A bandgap reference circuit includes a voltage generation circuit, a capacitor and a clamping control circuit. The voltage generation circuit is used to generate a current on an operation terminal. The capacitor includes a first terminal coupled to the operation terminal, and a second terminal coupled to a first reference voltage terminal. The clamping control circuit is coupled between the operation terminal and a second reference voltage terminal. The clamping control circuit includes a switch and a clamping unit, and is used to allow part of the current flowing through the clamping unit to the second reference voltage terminal when the switch is turned on.
-
-
-
-
-
-
-
-
-
Search Results
56
records
(took 0.029 seconds)
