A 1.1GHz bandwidth, 46%–62% efficiency Continuous Mode Doherty Power Amplifier
Bibliographic record
Abstract
In this paper, a novel technique is proposed to improve Doherty Power Amplifiers' (DPAs') bandwidth and efficiency by manipulating harmonic components to reshape current and voltage waveforms over a continuous bandwidth. Such operation creates a series of continuous high efficiency modes at each frequency over the band, which is referred as Continuous Mode Doherty Power Amplifier (C-DPA) in this paper. Based on the proposed technique, a 30-Watts broadband C-DPA is designed over the entire mainstream communication frequency band 1.65-2.75GHz. Using a 20MHz, 7.5dB PAPR LTE signal, the fabricated DPA is measured and linearized. According to the measured results, the designed DPA exhibits 46%-62% modulated efficiency over the designed 1.1GHz frequency range while maintaining Adjacent Channel Power Ratio (ACPR) below -45dBc. To the best of the authors' knowledge, this is the state-of-the-art performance of DPAs.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".