LeakyScatter: A Frequency-Agile Directional Backscatter Network Above 100 GHz
summary
Claims a fabricated leaky-wave backscatter node (16 mm × 54 mm) that passively steers energy back toward the source above 100 GHz using aperture reciprocity and dual-slit waveguides and demonstrates operation from ~100 GHz up to 314 GHz with tens of GHz bandwidth. Tests use a tunable wideband transmitter and 100–400 GHz pulse source, show retrodirective links to 1 m with average angular error ≈1.9° and data modulation limited by a mechanical mirror; frequency-agile, retrodirective up to 1 m, zero-power directional steering, ≤1 mW modulation.
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chapters (12)
- 0:00Intro
- 0:42Backscattering is a Promising Candidate for Low-Power Communication
- 1:10Today's Backscattering
- 2:39Key Goals 1. Enabling highly directional, retrodirective links
- 3:35Prior Work: Phase Arrays
- 4:39Key Idea: Create a New PHY-Layer Architecture based on Leaky Wave Antennas (LWAs)
- 6:10Dual Slit Architecture
- 6:54Frequency Agile and Wideband Operation
- 8:24Scaling to Multi-Users
- 9:04Fabricated LeakyScatter
- 10:31Highly Directional Retrodirective Links
- 12:18Summary and Contributions
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