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1. 发明公开

EP4099563A1 POWER AMPLIFIER CAPABLE OF MAINTAINING CONSTANT GAIN REGARDLESS OF TEMPERATURE VARIATIONS 审中-实审
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
申请人： RichWave Technology Corp.
发明人： Peng, Tien-Yun , Chen, Chih-Sheng
IPC分类号： H03F1/30 , H03F3/19 , H03G1/00
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).

2. 发明公开

EP4007163A1 BIAS CIRCUIT AND AMPLIFIER DEVICE 审中-公开
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
申请人： RichWave Technology Corp.
发明人： Peng, Tien-Yun , Chen, Chih-Sheng
IPC分类号： H03F1/30 , H03F3/19 , H03F3/345 , G05F3/26
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).

3. 发明公开

EP4063814A1 TEMPERATURE DETECTOR 审中-公开
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
申请人： RichWave Technology Corp.
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.

4. 发明公开

EP3965292A1 VOLTAGE CONTROL CIRCUIT FOR REDUCING SIGNAL INTERFERENCE 审中-公开
公开(公告)号：EP3965292A1
公开(公告)日：2022-03-09
申请号：EP21187346.8
申请日：2021-07-23
申请人： RichWave Technology Corp.
发明人： Yeh, Chia-Jung , Peng, Tien-Yun , Chen, Chih-Sheng
IPC分类号： H03F1/02 , H03F3/195 , H03F3/24 , G05F1/46 , H02M1/00 , H02M3/02
摘要： A voltage controlled circuit includes a tracking circuit (10), an operational amplifier (12), a transistor, a feedback circuit (17) and a sample and hold circuit (14). The tracking circuit (10) generates an updated enabling voltage (V'set) according to an enabling voltage (Vset), a sample enabling voltage (Vset max) and a sample reference voltage (Vclamp). The operational amplifier (12) output a control voltage according to an input voltage (V1) and a feedback voltage (V2). The transistor includes a control terminal receiving the control voltage, a first terminal receiving a reference voltage (VBAT), and a second terminal outputting a regulated voltage (Vreg). The feedback circuit (17) generates the feedback voltage (V2) according to the regulated voltage (Vreg). The sample and hold circuit (14) samples the input voltage (V1) to generate the sample enabling voltage (Vset_max), and samples the feedback voltage (V2) to generate the sample reference voltage (Vclamp).

5. 发明授权

EP3595153B1 VOLTAGE CONTROL DEVICE 有权
公开(公告)号：EP3595153B1
公开(公告)日：2020-10-28
申请号：EP18213299.3
申请日：2018-12-18
申请人： RichWave Technology Corp.
发明人： Chen, Chih-Sheng , Peng, Tien-Yun
IPC分类号： H02M1/36 , H03K19/0175 , H02M1/08 , G05F3/24 , H03K5/24 , H03K19/0185 , H02M3/07 , H02M1/00

6. 发明公开

EP3032730A1 VOLTAGE GENERATOR WHICH CAN SUPPORT ASSOCIATED CIRCUITRY 有权
标题翻译： SPANNUNGSGENERATOR，DER EINE VERBUNDENE SCHALTUNGSBAUGRUPPEUNTERSTÜTZENKANN
公开(公告)号：EP3032730A1
公开(公告)日：2016-06-15
申请号：EP15198594.2
申请日：2015-12-09
申请人： RichWave Technology Corp.
发明人： Chen, Chih-Sheng , Peng, Tien-Yun
IPC分类号： H02M3/07 , H02M1/00
CPC分类号： H02M3/24 , H02M1/36 , H02M3/07 , H02M7/103 , H02M2003/075
摘要： A voltage generator (100) includes an oscillator (130), a charge pump (140) having an input and an output, the input of the charge pump (140) being coupled to the output of the oscillator (130), a first resistor (R1) connected to the output of the charge pump (140), a second resistor (R2) connected to the first resistor (R1), a smoothing capacitor (C1) connected to the second resistor (R2), and a shorting element (150) connected in parallel with the second resistor (R2). When the shorting element is turned on, the second resistor (R2) is bypassed. By including an adjustable regulated voltage regulator (160), an adjustable bias current generator (160) and a size-adjustable inverter module (170), the voltage generator (100) is able to manipulate the speed of voltage generation.
摘要翻译：电压发生器（100）包括振荡器（130），具有输入和输出的电荷泵（140），电荷泵（140）的输入耦合到振荡器（130）的输出端，第一电阻器（R1）连接到电荷泵（140）的输出端，连接到第一电阻器（R1）的第二电阻器（R2），连接到第二电阻器（R2）的平滑电容器（C1）和短路元件 150）与第二电阻器（R2）并联连接。当短路元件接通时，旁路第二电阻器（R2）。通过包括可调节调节电压调节器（160），可调偏置电流发生器（160）和尺寸可调的逆变器模块（170），电压发生器（100）能够操纵电压产生的速度。

7. 发明公开

EP3595153A1 VOLTAGE CONTROL DEVICE 有权
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
申请人： RichWave Technology Corp.
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).

8. 发明公开

EP4084328A1 BIAS COMPENSATION CIRCUIT OF AMPLIFIER 审中-公开
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
申请人： RichWave Technology Corp.
发明人： Chen, Chih-Sheng , Peng, Tien-Yun
IPC分类号： H03F1/30 , H03F3/19 , H03F3/24 , H03G3/30
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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