-
1.发明公开公开(公告)号：US20240283414A1
公开(公告)日：2024-08-22
申请号：US18416838
申请日：2024-01-18
发明人： Jiefu WANG , Jun ZHANG
IPC分类号： H03F3/19
CPC分类号： H03F3/19 , H03F2200/294 , H03F2200/451
摘要： Disclosed in the present invention are a low noise amplifier and a corresponding radio frequency front-end module, a method, and a mobile terminal. According to the low noise amplifier, high isolation among input ports is achieved by means of a plurality of groups of input amplifiers and a plurality of groups of input switch tubes, and the area occupied by a circuit is also saved. By decomposing each input amplifier into a plurality of groups of amplifying units and by means of inter-stage switches connected to the plurality of groups of amplifying units, and by controlling the turning on of different combinations of inter-stage switches, multiple different gains of the amplifier are achieved. By sharing at least one output amplifier, the high gain and high isolation of the amplifier are guaranteed, and the circuit area can be minimized.
-
公开(公告)号：US20240230734A1
公开(公告)日：2024-07-11
申请号：US18415658
申请日：2024-01-18
发明人： Hao LI , Yunfang BAI
IPC分类号： G01R21/14
CPC分类号： G01R21/14
摘要： A power detection circuit (3) having a temperature compensation function, and a radio-frequency front-end module comprising the power detection circuit. The power detection circuit (3) comprises at least one Stage of power detection unit (Stage 1, Stage 2, Stage 3) and an integration unit (Sum), wherein an input end of the integration unit (Sum) is connected to an output end of the power detection unit (Stage 1, Stage 2, Stage 3); a resistor which is connected to a bias voltage in the power detection unit (Stage 1, Stage 2, Stage 3) is a thermistor, and/or a resistor which is connected to a reference ground potential in the integration unit (Sum) is a thermistor. The technical problem of requiring a plurality of bias voltages (Vreg) with different temperature coefficients to supply power due to different circuit modules having different requirements for temperature coefficients of bias voltages (Vreg) is solved.
-
3.发明授权公开(公告)号：US11264335B2
公开(公告)日：2022-03-01
申请号：US16620457
申请日：2018-07-01
发明人： Fujuan Jin , Yunfang Bai
IPC分类号： H01L23/552 , H01L23/66 , H01L25/16 , H01L25/065 , H01L21/82 , H01L21/56 , H05K9/00 , H05K1/11 , H05K1/02
摘要： An anti-electromagnetic interference radio frequency module and an implementation method therefor. The anti-electromagnetic interference radio frequency module comprises a radio frequency module body, the inside of the radio frequency module body is provided with an electrical connection area (1) and a grounding area (2), a metal thin film structure (4) is attached to an upper surface and side surfaces of the radio frequency module body, and the metal thin film structure is connected to the grounding area, forming an anti-electromagnetic interference shielding layer structure which is integrated with the radio frequency module body. The radio frequency module achieves an anti-electromagnetic interference effect by means of the anti-electromagnetic interference shielding layer structure, so that electromagnetic interference generated around the radio frequency module is effectively isolated, thereby improving the performance of the radio frequency module.
-
4.发明申请公开(公告)号：US20200186099A1
公开(公告)日：2020-06-11
申请号：US16346037
申请日：2017-06-30
发明人： Jinxin ZHAO , Yunfang BAI , Sheng LIN
摘要： Disclosed are a radio frequency power amplifier for inhibiting a harmonic wave and stray, a chip and a communication terminal. The radio frequency power amplifier comprises a power source, an LDO circuit, a harmonic inhibition unit, a stray inhibition unit, an amplifying unit, and a low-pass matching network. On the one hand, by means of the power source being connected to the harmonic inhibition unit, harmonic waves and stray of the power source at a resonant frequency are inhibited. Additionally, by means of the stray inhibition unit reducing the gain of the amplifying unit at a resonant frequency, output of stray is reduced. On the other hand, by means of the low-pass matching network being embedded at an output end of the radio frequency power amplifier, harmonic waves and the stray of a radio frequency signal amplified by the amplifying unit at different frequencies is effectively inhibited.
-
公开(公告)号：US20190207577A1
公开(公告)日：2019-07-04
申请号：US16314217
申请日：2017-06-30
发明人： Jinxin ZHAO
CPC分类号： H03G3/3036 , H03F3/195 , H03F3/21 , H03G3/30
摘要： A multi-gain mode power amplifier, a chip, and a communication terminal. The multi-gain mode power amplifier comprises at least one amplifier circuit. The amplifier circuit comprises a bias circuit, a feedback circuit, a transistor (101), and an input matching network/output matching network. A bias voltage or a control voltage (120) is adjusted to make the feedback circuit to be either turned on or turned off, thus allowing the amplifier circuit to work in a high-gain mode or a low-gain mode. The multi-gain mode power amplifier has different gain modes, fully satisfies the actual demand of the communication terminal to work in the high-gain mode when transmitting a high power and to work in the low-gain mode when transmitting a low power.
-
公开(公告)号：US20180351553A1
公开(公告)日：2018-12-06
申请号：US15780242
申请日：2016-11-30
发明人： Sheng LIN
IPC分类号： H03K19/00 , H03K19/21 , H03K19/08 , H03K19/003
CPC分类号： H03K19/0002 , H03K19/00307 , H03K19/08 , H03K19/212 , H04B14/00
摘要： Disclosed is a variable coding method for realizing chip reuse, comprising the following steps: using at least two identical integrated circuit chips, wherein each integrated circuit chip executes different control logic truth tables according to different gating signals; introducing at least one logical control signal as a gating signal; and controlling the logical control signal, so that each integrated circuit chip respectively executes a corresponding control logic truth table. Also disclosed is a communication terminal using the variable coding method for realizing chip reuse. Two or more completely identical integrated circuit chips can be used to realize different logical control functions, thereby simplifying the type of a chip for realizing a system function, and greatly reducing the development costs of an integrated circuit system and the management complexity of a mass production supply chain.
-
7.发明公开公开(公告)号：US20240146260A1
公开(公告)日：2024-05-02
申请号：US18409789
申请日：2024-01-11
发明人： Hao LI , Yunfang BAI
CPC分类号： H03F3/245 , G05F1/56 , H01P5/12 , H03F2200/451
摘要： Disclosed in the present invention is a radio frequency front-end module, comprising at least one driving amplifier and at least one power amplifier. The output end of the driving amplifier is connected to the input end of the power amplifier. The radio frequency front-end module is powered by a power supply when working. When a preset power switching condition is met, the at least one driving amplifier and/or the power amplifier is powered by the power supply and a battery supply. The radio frequency front-end module provided by the present invention can eliminate the limitation of insufficient working current of a power management chip on the overall maximum output power in a low-voltage and high-power working state, and meets the application requirements of the electronic device on an APT mode.
-
公开(公告)号：US20240143005A1
公开(公告)日：2024-05-02
申请号：US18408535
申请日：2024-01-09
发明人： Chunling LI , Yongshou WANG , Cheng CHEN , Sheng LIN
摘要： A power supply suppression circuit (10), a chip and a communication terminal that only achieve the enhancement of the power supply suppression capability from an AC, without generating additional circuit power consumption. The power supply suppression circuit (10) comprises a sampling unit (105), a compensation unit (106), and an amplification unit (107). The sampling unit (105) is connected to the compensation unit (106), and the compensation unit (106) is connected to the amplification unit (107). The power supply suppression circuit (10) obtains an AC signal from a preset sampling node position of a low dropout regulator, and generates an enhancement signal in phase with the AC signal on a power supply (Vdd) on the basis of the AC signal, such that the input end voltage of the power output stage of the low dropout regulator immediately follows the voltage change of the power supply (Vdd).
-
9.发明申请公开(公告)号：US20230100717A1
公开(公告)日：2023-03-30
申请号：US18061482
申请日：2022-12-05
发明人： Gang CHEN , Yunfang BAI
IPC分类号： H01P5/19
摘要： Disclosed are a 3 dB orthogonal hybrid coupler, a radio-frequency front-end module and a communication terminal. The 3 dB orthogonal hybrid coupler can be arranged on a substrate, and a straight-through metal coil and a coupling metal coil are of a laminated structure, a coplanar structure or a combined form of the laminated structure and the coplanar structure, such that a corresponding radio-frequency signal input port is connected to a first radio-frequency signal output port, and an isolation port is connected to a second radio-frequency signal output port. Moreover, according to the requirements of the operating frequency and the port feature impedance of the 3 dB orthogonal hybrid coupler, the number of turns and the number of layers of the straight-through metal coil and the coupling metal coil are adjusted.
-
公开(公告)号：US20220278659A1
公开(公告)日：2022-09-01
申请号：US17663429
申请日：2022-05-14
发明人： Jinxin ZHAO , Yunfang BAI
摘要： A radio frequency power amplifier, a chip, and a communication terminal. The radio frequency power amplifier comprises a power amplifier circuit (5), an output matching circuit (2), a power detection circuit (3), and a bias comparison circuit (4). The output power on a main signal path is measured by the power detection circuit (3), and an equivalent voltage proportional to the output power is obtained and input to the bias comparison circuit (4); the equivalent voltage value is adjusted by means of the bias comparison circuit (4) and compared with a control voltage (1) to provide a bias voltage and/or collector voltage for the power amplifier circuit (5), thereby forming a closed-loop circuit, such that the radio frequency power amplifier can work in a stable state when gains and output power are in different power levels.
-
-
-
-
-
-
-
-
-
搜索结果
45 条记录 (耗时 0.015 秒)
