RF Power Amplifiers for Emerging Wireless Communications: Single Branch Vs. Multi-Branch Architectures
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Bibliographic record
Abstract
This paper proposes an experimental study of the architectures of the high power amplification stage and their influences on the system's linearity and power efficiency with application to wireless communication infrastructures. Two architectures are investigated: the single branch power amplification stage using class A/B power amplifiers and the promising multi-branch architecture using dynamic load modulation techniques such as the Doherty amplifier. Two LDMOS based high power amplifiers line-ups operating around 2.14 GHz were designed. In order to improve their efficiency vs. linearity trade-off, a predistortion based linearization technique has been applied to the both studied amplification stages. Measurement results under multi-carriers W-CDMA signals confirm the promising potential of the multi-branch approach. Indeed, the multi-branch architecture greatly improves the power efficiency of the amplification stage while maintaining good linearity performances
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Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 it