Results 121 to 130 of about 5,033,045 (217)

Harmonic-injection doherty power amplifier: benefits and limitations

open access: yes
3538This paper presents an investigation into the effects of second harmonic (2f0) power injection on the performance of a Doherty power amplifier (DPA).
Maier, Thomas   +4 more
core   +1 more source

Millennial-scale variability of the Antarctic ice sheet during the early Miocene. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Sullivan NB   +5 more
europepmc   +1 more source

IEEE 802.11b/g High Efficiency CMOS Power Amplifier with an Integrated Adaptive Bias Circuit

open access: yes, 2007
本論文探討以UMC CMOS 0.18um RF製程來實現Doherty PA電路架構,以提高6dB-backoff 時的功率輸出效率。經由S參數的量測,在2.4GHz的頻段中,有10.6dB的小訊號增益。該電路的最大輸出功率與P1dB分別為22.6dB與21.4dBm。此時PAE最高可達33.6%,於P1dB點為32.6%,在6dB-backoff時仍高達21.1%的高效率值。由於晶片內部不需採用螺旋電感,其晶片面積僅666*999 µm2。The Doherty power ...
劉致元, Liu, Zhi-Yuan
core  

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