Patents
US 9209856 B2: Spread spectrum non-linear junction detector
- Granted
- 2015-12-08
- Filed
- 2013-09-09 application 14022172
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A digital spread spectrum non-linear junction detector (NLJD) utilizes the 2.4 GHz transmission band to increase sensitivity to detect smaller electronics. The receiver chain of the NLJD pre-distorts the transmission signal and correlates the result with the response signal to differentiate between target responses and ambient interference signals. A touch screen display displays a signal strength received by the NLJDs receiver at a second harmonic frequency of the 2.4 GHz transmit signal and a signal strength received by the receiver at a third harmonic frequency of the transmit signal. A frequency swept response received by the receiver in response to the transmitted 2.4 GHz transmit signal is graphically displayed on the touch screen. The use of the 2.4 GHz band, touch screen, correlation based target differentiation and frequency swept response display improve the sensitivity and usability of the NLJD and increase the likelihood of it successfully performing its tasks.
Source: PVGPATDIS, file of 2026-04-10 (ipg151208.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Research Electronics International, LLC 8 patents | US company or organization | Cookeville, TN | RESEARCH ELECTRONICS INTERNATIONAL, L.L.C. State business registration FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Bruce R. Barsumian | Cookeville, TN | 7 | Person page FUZZY medium confidence | PVGPATDIS, file of 2026-04-10 |
| Thomas H. Jones | Cookeville, TN | 10 | PVGPATDIS, file of 2026-04-10 | |
| Darrell L. Harmon | Denver, CO | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04B | Transmission | H04B1/707 | PVGPATDIS, file of 2026-04-10 |
| G01V | Geophysics; gravitational measurements; detecting masses or objects; tags | G01V3/12 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2019-01-20 | Assignment Assignment of assignor's interest | BINKLEY, ROSS signed 2019-01-11 JONES, THOMAS signed 2019-01-11 BARSUMIAN, BRUCE signed 2019-01-18 | RESEARCH ELECTRONICS INTERNATIONAL, LLC COOKEVILLE, TN | 48064/379 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
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.