A Compact Planar Quad-Channel SIW Filtering Crossover with Flexibly Allocated Channel Frequencies and Bandwidths
Bibliographic record
Abstract
This paper presents a compact planar quad-channel substrate integrated waveguide (SIW) filtering crossover (FCR) with flexibly allocated center frequencies (CFs) and bandwidths (BWs) for all the channels. Four distinct substrate integrated rectangular cavities (SIRCs) operating with the orthogonal dual modes of$\text{TE}_{102}$and$\text{TE}_{201}$are designed specifically, cascaded adjacently, and coupled accordingly to allow a desirable transmission and inter-channel isolation performance, while enabling a flexible allocation of the channel CFs with a maximum frequency ratio of 1.32. By meticulously managing the resonant frequencies and mutual couplings among the constituent cavities, a flexible allocation of CFs and BWs can be achieved for each channel. Finally, a quadchannel SIW FCR with four channels centered at 26, 28, 30, and 32 GHz with the same BWs of 0.48 GHz is synthesized, designed, fabricated, and tested to demonstrate the feasibility of the proposed design scheme.
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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 | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".