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公开(公告)号：US20240243699A1
公开(公告)日：2024-07-18
申请号：US18400417
申请日：2023-12-29
申请人： Qorvo US, Inc.
发明人： Amin Shahverdi , Thomas Landon , Rached Hajji , Elias Reese
CPC分类号： H03F1/0288 , H03F1/56 , H03F3/245 , H03F2200/451
摘要： A Doherty amplifier is disclosed. In some embodiments, the Doherty amplifier includes: a main amplifier defining a first trunk thickness; an auxiliary amplifier defining a second trunk thickness. Impedances of the Doherty amplifier are set by selecting the first trunk thickness of the main amplifier and the second trunk thickness of the auxiliary amplifier. In this manner, the power efficiency of the Doherty amplifier is improved when amplifying a modulated signal.
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公开(公告)号：US20240243709A1
公开(公告)日：2024-07-18
申请号：US18400433
申请日：2023-12-29
申请人： Qorvo US, Inc.
发明人： Amin Shahverdi , Nikolaus Klemmer , Rached Hajji , Elias Reese , Thomas Landon , Hugo Ascencio
CPC分类号： H03F3/245 , H03F1/0288 , H03F1/22 , H04B1/0458 , H04B2001/045
摘要： A power amplifier cell is disclosed having a first transistor with a first terminal coupled to ground, a second terminal, and a first control terminal. A second transistor has a third terminal coupled to the second terminal, a fourth terminal, and a second control terminal. Further included is a capacitor having a first plate coupled directly to the second control terminal and a second plate coupled to the ground. As such, there is no intervening inductor component coupled between the first plate and the second control terminal, leaving only parasitic inductance between the first plate and the second control terminal. The capacitor has a capacitance sized to resonate with the parasitic inductance at a resonant frequency substantially higher than a desired frequency of operation of the power amplifier cell.
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3.发明公开公开(公告)号：US20240243700A1
公开(公告)日：2024-07-18
申请号：US18400451
申请日：2023-12-29
申请人： Qorvo US, Inc.
发明人： Amin Shahverdi , Rached Hajji , Thomas Landon
CPC分类号： H03F1/0288 , H03F3/245 , H03F2200/192 , H03F2200/451
摘要： This disclosure relates generally to Doherty amplifiers. In one embodiment, a Doherty amplifier includes an RF input of the Doherty amplifier for receiving a radio frequency (RF) signal, a main amplifier coupled to the RF input, and an auxiliary amplifier coupled to the RF input. A phase lag component connected between the RF input and one of either the main amplifier or the auxiliary amplifier and a phase lead component connected between the RF input and another one of either the main amplifier or the auxiliary amplifier. In some embodiments, the phase lead and phase lag components ensure that the split signals output from the main and auxiliary amplifier are recombined in phase throughout a frequency band.
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