High-Frequency Vector-Modulated Signal Generation Using Frequency-Multiplier-Based RF Beamforming Architecture
Why this work is in the frame
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Bibliographic record
Abstract
In this paper, a frequency-multiplier-based radio frequency (RF) beamforming architecture suitable for the generation/transmission of high-frequency vector-modulated signals is proposed. The proposed architecture incorporates a single-input-single-output digital predistortion function that has been carefully synthesized to guarantee excellent error vector magnitude (EVM) and adjacent channel power ratio (ACPR) for the signals received in the far-field. A 2×2 beamforming array was built using off-the-shelf frequency doublers and printed circuit board based patch antennas, all operating at 28 GHz, to serve as the device-under-test in the validation experiments. Over-the-air experiments confirmed the ability of the proposed architecture to successfully generate orthogonal frequency division multiplexed (OFDM) signals. For instance, EVMs as low as 0.9% and 2.5% and ACPRs equal to 52 dBc and 47 dBc, were obtained for modulation bandwidths equal to 100 MHz and 400 MHz, respectively.
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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