Bibliographic record
Abstract
Microwave arbitrary waveforms are widely used in radar, communications, medical imaging, and modern instrumentation systems. Microwave arbitrary waveforms are usually generated electrically using digital electronics. This chapter reviews techniques to use fiber-optic devices to implement arbitrary microwave waveform generation. It discusses four different techniques: direct space-to-time pulse shaping; spectral-shaping and wavelength-to-time mapping; temporal pulse shaping; and microwave pulse generation based on photonic microwave delay-line filters. The advantages of these techniques compared with free-space-optics-based solutions include simplicity, low cost, and small size. The chapter describes the use of the techniques to generate frequency-chirped and phase-coded microwave waveforms. Arbitrary waveform generation can be realized based on direct space-to-time mapping in which an arbitrary optical pulse sequence is generated in the optical domain and then applied to a high-speed optical-to-electrical converter to generate a microwave waveform. The chapter also discusses the challenges in the implementation of the systems for practical applications.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.002 | 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 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".