Patents
US 12580656 B2: RF steganography based on photonics
- Granted
- 2026-03-17
- Filed
- 2022-01-11 application 18271762
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Various examples are provided related to single channel and multi-channel radio frequency (RF) steganography. In one example, a method includes generating an amplified spontaneous emission (ASE) broadband signal; spectrally slicing the ASE broadband light to achieve taps for generating a dynamic photonic finite impulse response in an RF domain; generating a stealth-modulated broadband optical carrier by combining a stealth signal with the spectrally sliced ASE broadband light; passing the stealth-modulated broadband optical carrier to a dispersive medium to achieve the dynamic photonic FIR in the RF domain; and transmitting the stealth-modulated optical comb carrier via a transmission fiber. The ASE broadband light can have wavelength and intensity corresponding to background noise of a photonic system. In another example, a system for RF steganography includes a stealth transmitter. The stealth transmitter can generate and transmit the stealth-modulated optical comb carrier to a stealth receiver via a transmission fiber.
Source: PTBLXML, file of 2026-03-17 (ipgb20260317.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC. 535 patents | US company or organization | Athens, GA | UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC. State business registration EXACT high confidence: identical full name and state UNIVERSITY OF GEORGIA RESEARCH FOUNDATION INC Nonprofit EXACT high confidence: identical full name and state | PTBLXML, file of 2026-03-17 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mable P. Fok | Bishop, GA | 7 | PTBLXML, file of 2026-03-17 | |
| Qidi Liu | Athens, GA | PTBLXML, file of 2026-03-17 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04B | Transmission | H04B10/27 | PTBLXML, file of 2026-03-17 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.