Design of reduced size power divider for lower RF band using periodically loaded slow wave structure
Bibliographic record
Abstract
In conventional Wilkinson power divider the quarter wave transformers are used to match the split ports to the common port. These are realized by 90deg transmission lines, which are quite large especially at lower RF range of frequencies. This paper reports the design and development of a reduced size two-way Wilkinson power divider at 850 MHz and 620 MHz. Approximately, 25%-35% length reduction is achieved by loading transmission line by capacitance at fixed intervals, which reduces the phase velocity and hence physical length at the desired frequency of operation. The required dimensions of the periodically loaded line are calculated using basic transmission line theory. The paper describes the method of theoretical calculation of the factor by which phase velocity is reduced at the desired frequency of operation. The EM simulation and experimental results validates the design approach. The circuit is realized with microstrip technology and hence can easily be fabricated using conventional printed circuit processes.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".