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公开(公告)号：EP4084328A1
公开(公告)日：2022-11-02
申请号：EP21218244.8
申请日：2021-12-30
发明人： Chen, Chih-Sheng , Peng, Tien-Yun
摘要： A bias compensation circuit comprises a detecting circuit, comprising a diode-connected transistor circuit, with a first end for receiving a first current, and a second end coupled to a first reference voltage end; and a first diode circuit, with a first end for receiving a second current, and a second end coupled to the first reference voltage end; wherein the detecting circuit provides a first voltage level according to the diode-connected transistor circuit, and provides a second voltage level according to the first diode circuit; a voltage-current converting circuit, coupled to the detecting circuit, for generating a first reference current according to the first voltage level and the second voltage level; and a bias circuit, coupled to the voltage-current converting circuit, for receiving the first reference current, to provide a bias voltage level according to the first reference current.
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公开(公告)号：EP4063814A1
公开(公告)日：2022-09-28
申请号：EP21216744.9
申请日：2021-12-22
发明人： Wu, Po-Wei , Peng, Tien-Yun , Chen, Chih-Sheng
IPC分类号： G01K7/01
摘要： A temperature detector (1) is used to detect a temperature of a circuit under test, and includes a temperature coefficient component (10), a multiplier (12), an impedance component (Zl) and a node (N1). The temperature coefficient component (10) is arranged in proximity to the circuit under test. A control terminal of the multiplier (12) is coupled to the temperature coefficient component (10). The impedance component (Zl) is coupled between the second terminal of the temperature coefficient component (10) and the control terminal of the multiplier (12), or between a second terminal of the multiplier (12) and a third voltage terminal. The node (N1) is formed between the temperature coefficient component (10) and the multiplier (12). An amplified detection current (Ia) flowing to a first terminal of the multiplier (12) is positively correlated to the temperature of the circuit under test.
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公开(公告)号：EP3796561A1
公开(公告)日：2021-03-24
申请号：EP20193565.7
申请日：2020-08-31
IPC分类号： H04B1/18
摘要： The frequency detector (100) includes a first impedance circuit (110) and a second impedance circuit (120). The first impedance circuit (110) has a first terminal for receiving an input signal (SIG IN ), and a second terminal for outputting a divisional signal (SIG DVS ). The second impedance circuit (120) has a first terminal coupled to the second terminal of the first impedance circuit (110), and a second terminal coupled to a first system voltage terminal (NV1). The frequency response of the first impedance circuit (110) is different from a frequency response of the second impedance circuit (120). The resistance of the first impedance circuit (110), a resistance of the second impedance circuit (120), and the divisional signal (SIG DVS ) change with a frequency of the input signal (SIG IN ).
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公开(公告)号：EP4170908A1
公开(公告)日：2023-04-26
申请号：EP22202791.4
申请日：2022-10-20
发明人： Chen, Chih-Sheng , Chu, Yu-Hsiang
IPC分类号： H03K17/693 , H03K17/00 , H04B1/00
摘要： A radio frequency switch (1, 10, 20) has an antenna end (110), a first signal end (110), a second signal end (120), a third signal end (130), a first series path (A1) having a first switch (M1), a second series path (A2) having a second switch (M2), a third series path (A3) having a third switch (M3), a first shunt path (B1) coupled between the first signal end (110) and a node (N1), a second shunt path (B2) coupled between the second signal end (120) and the node (N1), a common path (140) coupled between the node (N1) and a first reference voltage end (GND1), and a third shunt path (B3) coupled between the third signal end (130) and a second reference voltage end (GND2). The first series path (A1) and the second series path (A2) are connected to a common ground pad via the common path (140).
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5.发明公开
公开(公告)号：EP4099563A1
公开(公告)日：2022-12-07
申请号：EP21211548.9
申请日：2021-12-01
发明人： Peng, Tien-Yun , Chen, Chih-Sheng
摘要： A power amplifier (1) includes a transistor (T1), a temperature sensor (12) and a filter (14). The transistor (T1) is used to receive a bias signal (Sb) and amplify a radio frequency (RF) signal (Srfi). The temperature sensor (12) is arranged in proximity to the transistor (T1), and is used to detect a temperature of the transistor (T1) to provide a voltage signal (VTD) at a control node (N1) accordingly. The filter (14) is coupled to the temperature sensor (12) and is used to filter (14) the voltage signal (VTD) to generate a filtered voltage (Vf). The bias signal (Sb) is adjusted according to the filtered voltage (Vf).
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公开(公告)号：EP4007163A1
公开(公告)日：2022-06-01
申请号：EP21210672.8
申请日：2021-11-26
发明人： Peng, Tien-Yun , Chen, Chih-Sheng
摘要： A bias circuit (100) for an RF amplifier (AMP) includes a current mirror circuit (110), an operational amplifier (120), and a bias generating circuit (130). The current mirror circuit (110) includes a reference branch circuit (112) and at least one mirror branch circuit (114). The reference branch circuit (112) generates a reference current (Iref) according to a base current (IB), and the at least one mirror branch circuit (114) generates at least one mirrored current (Im1) according to the reference current (Iref). The operational amplifier (120) receives a first voltage (V1) from the reference branch circuit (112) and a second voltage (V2) from the at least one mirror branch circuit (114), and adjusts the first voltage (V1) by generating a control voltage (Vctrl) according to the second voltage (V2). The bias generating circuit (130) generates a bias signal (Sbias) according to the at least one mirrored current (Im1).
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公开(公告)号：EP3910792A1
公开(公告)日：2021-11-17
申请号：EP21170616.3
申请日：2021-04-27
发明人： Huang, Pin-Yi , Chen, Chih-Sheng , Hsu, Ching-Wen
摘要： An amplifier circuit (1) includes an input terminal (10) to receive an input signal (RFin), an output terminal (12) to output an output signal (RFout), an amplification unit (14), and a phase adjustment unit (161 to 167). The amplification unit (14) includes an input terminal (IN) coupled to the input terminal (10) of the amplifier circuit (1), an output terminal (OUT) coupled to the output terminal (12) of the amplifier circuit (1), a first terminal (T1) coupled to a first voltage terminal (VDD), and a second terminal (T2) coupled to a second voltage terminal (GND). The phase adjustment unit (161 to 167) is coupled to the amplification unit (14). The amplifier circuit (1) can be operated in a plurality of modes to provide respective gains. The phase of the output signal (RFout) is maintained within a predetermined range regardless of the mode the amplifier circuit (1) is operated in.
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公开(公告)号：EP3633852A1
公开(公告)日：2020-04-08
申请号：EP19201028.8
申请日：2019-10-02
发明人： Chen, Chih-Sheng , Hsu, Ching-Wen
摘要： An amplifier circuit (100) includes an output terminal (Po), an amplification unit (A1) and a switch (T3). The output terminal (Po) is used to output an amplification signal (Sa). The amplification unit (A1) includes a first transistor (T1) and a second transistor (T2). The first transistor (T1) includes a control terminal for receiving a first input signal (S1), a first terminal coupled to the output terminal (Po) for outputting an amplified first input signal, and a second terminal. The second transistor (T2) includes a control terminal for receiving a second input signal (S2), a first terminal coupled to the output terminal (Po) for outputting an amplified second input signal, and a second terminal. The switch (T3) includes a terminal coupled to the second terminal of the first transistor (T1). The amplification signal (Sa) is generated using at least the amplified first input signal and/or the amplified second input signal.
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公开(公告)号：EP3624337A1
公开(公告)日：2020-03-18
申请号：EP19192447.1
申请日：2019-08-20
发明人： Chen, Chih-Sheng , Lin, Jhao-Yi , Hsu, Ching-Wen
摘要： A control circuit (100) with a bypass function includes a first signal terminal (N1), a second signal terminal (N2), an output terminal (N opt ), a first switch unit (110) to a third switch unit (130), an output switch unit (150) and a bypass unit (180). The first signal terminal (N1) is used for receiving a first signal (S1). The second signal terminal (N2) is used for receiving a second signal (S2). The first switch unit (110) is coupled to the first signal terminal (N1). The second switch unit (120) is coupled between the first switch unit (110) and the output switch unit (150). The third switch unit (130) is coupled to the second signal terminal (N2). The output switch unit (150) is coupled between the second switch unit (120) and the output terminal (N opt ). The bypass unit (180) is coupled between the first switch unit (110) and the output terminal (N opt ).
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公开(公告)号：EP3595153A1
公开(公告)日：2020-01-15
申请号：EP18213299.3
申请日：2018-12-18
发明人： Chen, Chih-Sheng , Peng, Tien-Yun
IPC分类号： H02M1/36 , H03K19/0175 , H02M1/08 , H02M3/07 , H02M1/00
摘要： A voltage control device (100) includes a charge pump (110), a driving circuit (120), and a control circuit (130). The charge pump (110) provides a first voltage (V1). The driving circuit (120) is coupled to the charge pump (110), and receives the first voltage (V1) and a reference voltage (VG). The driving circuit (120) outputs a driving signal (SIG OUT ) according to an input signal (SIG IN ), the first voltage (V1) and the reference voltage (VG). The control circuit (130) is coupled to the charge pump (110) and the driving circuit (120). Before the first voltage (V1) reaches a threshold level (THV1), the control circuit (130) adjusts the reference voltage (VG) to increase the voltage gap between the first voltage (V1) and the reference voltage (VG).
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