Full mode substrate integrated waveguide type high power amplifier with second harmonic suppression
Bibliographic record
Abstract
This article presents a 10 W full-mode substrate integrated waveguide-type high power amplifier. The matching circuit was designed with microstrip-to-SIW transition and SIW bandpass filter. To realize the matching network at the fundamental frequency 2.18 GHz, we used in the SIW bandpass filter an inductive metallized post. A full mode SIW band pass filter is applied to suppress the 2ndharmonic of 2.18 GHz as input and output of the matching circuits. The insertion-loss measurement of the SIW bandpass filter at the frequency 2.18 GHz and 4.36 GHz are 0.86 dB and 34.58 dB respectively. The SIW HPA was designed and fabricated at the frequency of 2.18 GHz using GaN transistor. This measurement of power-added-efficiency at output of 40.02 dBm is 60.7% with a gain of 13.0 dB at the 2.18 GHz. For 4G Long Term Evolution (LTE) and 5G system in millimeter wave, this can be used with other SIW-type of passive circuits by integrating in same substrate.
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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) | 0.004 | 0.002 |
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".