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公开(公告)号：US20230246597A1
公开(公告)日：2023-08-03
申请号：US18132426
申请日：2023-04-10
发明人： LIYUAN CAI , KAI XUAN , JIASHUAI GUO
CPC分类号： H03F1/0288 , H03F1/42 , H03F3/245 , H03F2200/36 , H03F2200/222 , H03F2200/387 , H03F2200/451
摘要： A broadband Doherty power amplifier is provided, which includes a power divider, a carrier power amplifier circuit, a peak power amplifier circuit, and a load modulation network. The carrier power amplifier circuit includes a carrier input matching circuit, a carrier power amplifier, and a carrier output matching circuit. The peak power amplifier circuit includes a peak input matching circuit, a peak power amplifier and a peak output matching circuit. A resistance value of a system load is ZL. An output impedance of the carrier output matching circuit is Zm and meets Zm=ZL(n+ 1). An output impedance of the peak output matching circuit is Zp and meets Zp ZL(n+1)/n. The load modulation network is configured to set an impedance of a combination point to be ZQ, whose resistance value is ZL. A method of implementing a broadband Doherty power amplifier is further provided.
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公开(公告)号：US20230305586A1
公开(公告)日：2023-09-28
申请号：US18132424
申请日：2023-04-10
发明人： YONGFENG ZHOU , JIASHUAI GUO
CPC分类号： G05F1/59 , G05F1/575 , H03F3/21 , H03F2200/222 , H03F2200/387
摘要： An LDO power supply circuit includes an operational amplifier, a first transistor, and a resistance feedback network including a first branch and a second branch. A negative electrode input end of the operational amplifier connects a control voltage. An output end of the operational amplifier connects a gate electrode of the first transistor. A source electrode of the first transistor connects a power supply voltage. A positive electrode input end of the operational amplifier and a drain electrode of the first transistor are respectively an input end and an output end of the LDO power supply circuit. The resistance feedback network connects between the drain electrode of the first transistor and the positive electrode input end of the operational amplifier. A first feedback coefficient formed by the first branch is different from a second feedback coefficient formed by the second branch. The present disclosure further provides a power amplifier.
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公开(公告)号：US20230361444A1
公开(公告)日：2023-11-09
申请号：US18353884
申请日：2023-07-18
发明人： SHULUN LI , JIASHUAI GUO
CPC分类号： H01P3/006 , H01P5/1015 , H01P3/10
摘要： A coplanar waveguide transmission line and a design method thereof are provided. The coplanar waveguide transmission line includes a first dielectric substrate, a center conductor strip, and two ground conductor strips. The first dielectric substrate has a first surface and a second surface opposite to each other. The center conductor strip and the ground conductor strips are stacked and fixed to the first surface. The center conductor strip includes a first segment and a second segment. A width of the first segment is greater than a width of the second segment, so that the first segment and the second segment form a step structure. A rectangular groove recessed toward the second surface is defined in the first surface, and a part of the center conductor strip is stacked and fixed to a side, distal from the second surface, of the rectangular groove to form a defected ground structure.
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公开(公告)号：US20230253920A1
公开(公告)日：2023-08-10
申请号：US18131872
申请日：2023-04-07
发明人： XIAOJIAO REN , JIASHUAI GUO
摘要： A resistor-capacitor oscillation circuit includes a first group of inverters, a second group of inverters, a latch, a delay circuit, and a third group of inverters. The first group of the inverters is connected to the delay circuit and is configured to generate a first signal A and a second signal B. An input end of the second group of the inverters is connected to an enable signal EN. An output end of the second group of the inverters is connected to the latch. An output end of the delay circuit is connected to the latch. The latch is connected to the third group of the inverters and includes a first output end and a second output end. After a first clock signal FB is driven by the third group of the inverters, an output signal CLK is output by an output end of the third group.
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公开(公告)号：US20230246608A1
公开(公告)日：2023-08-03
申请号：US18132425
申请日：2023-04-10
发明人： HUAN HUANG , JIASHUAI GUO
CPC分类号： H03F3/24 , H03F3/60 , H03F2200/451
摘要： A method for isolating transmission lines of a radio frequency power amplifier and a transmission structure of the radio frequency power amplifier are provided. The method includes steps of setting a distance between adjacent two of transmission lines on a chip substrate to be greater than 2.5 times a width of each of the transmission lines, and disposing shielding lines at an inner side of each of the transmission lines and an outer side of each of the transmission lines opposite to the inner side; wrapping a permalloy layer on an outer wall of each of the transmission lines; and wrapping an aluminum layer on an outer wall of the permalloy layer, defining a plurality of grooves on an outer wall of the aluminum layer at intervals, where the plurality of the grooves are recessed inward and in an inverted triangular structure.
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公开(公告)号：US20230246606A1
公开(公告)日：2023-08-03
申请号：US18132422
申请日：2023-04-10
发明人： ZHIYUAN XIE , YUTING ZHAO , JIASHUAI GUO
CPC分类号： H03F3/21 , H03F1/565 , H03F2200/387 , H03F2200/255
摘要： A differential power amplifier includes an input matching network, a first-stage amplification circuit, a first inter-stage matching network, a second-stage amplification circuit, a second inter-stage matching network, a third-stage amplification circuit, and an output matching network. The first-stage amplification circuit and the second-stage amplification circuit are single-ended input single-ended output circuits. The third-stage amplification circuit is a dual input dual output circuit. The second inter-stage matching network includes a first transformer T1, a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The output matching network includes a second transformer T2. The inter-stage matching networks and the output matching network are realized by the first transformer T1 and the second transformer T2, which reduces an inter-stage matching difficulty, optimizes input return loss and gain, and improves output power.
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