Generalized Continuous Class-F Harmonic Tuned Power Amplifiers
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Bibliographic record
Abstract
This letter generalizes the theory of continuous class-F harmonic tuned power amplifiers (PAs) to model their operation for gate bias voltages above the pinch-off point (i.e., class-AB bias conditions). The proposed theory starts with deriving intrinsic drain current and voltage waveforms for continuous class-F harmonic tuned PA biased above pinch-off and then finding the resulting design space. The new formations resulted in shifted fundamental impedance space along with expanded second harmonic impedance space as the conduction angle, α, is swept between 180 and 360°. Moreover, under class-F harmonic tuned termination, it is found that the drive power required at the input of the device is also dependent on bias conditions. For experimental validation, the proposed approach is adopted to implement a broadband PA using a 10 W gallium-nitride (GaN) transistor. Under class-AB bias conditions, the implemented PA shows more than 70% power added efficiency, 40 dBm output power, and 15 dB gain at frequencies from 550 to 950 MHz.
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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)
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