GaN polar transmitter design for base-station applications
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Bibliographic record
Abstract
In this paper a comparative study of 10 watt GaN polar transmitters for base-station application is carried out. Two main topologies are compared and studied. In the first topology, the drain of the transistor is modulated with the pulse format of the signal's envelope, and in the modified topology, the gate of the transistor is modulated with the pulse format of the signal's envelope. The transmitters are compared for two main parameters, the power efficiency and the signal quality. After a brief description of both topologies, their advantages and disadvantages are described, especially in terms of efficiency and signal quality. A LTE signal with the bandwidth of 1.4 MHz, the PAPR of 7.2 dB and the sampling rate of 64 is used for comparison purposes. Using the LTE signal, the polar architecture with modulated drain bias is able to achieve an SNDR of 42 dBc and the drain efficiency of 44%, while an SNDR of 35 dBc and the drain efficiency of 53% are obtained for the modified polar transmitter with the gate bias modulation.
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Full frame distilled prediction
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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
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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