Patents
US 12683560 B2: Variable gain amplifiers with fine attenuation step control and flat signal-to-noise ratio versus attenuation
- Granted
- 2026-07-14
- Filed
- 2023-06-15 application 18335459
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Variable gain amplifiers (VGAs) with fine attenuation step control and flat signal-to-noise ratio (SNR) versus attenuation are provided. In certain embodiments, a VGA includes an input that receives a radio frequency (RF) input signal, a segmented amplification circuit including multiple amplification cells that operate in parallel to amplify the RF input signal to generate multiple amplified RF signals, an impedance ladder including multiple taps each connected to a different node of the impedance ladder, and switches that control routing of the amplified RF signals to one or more selected taps of the impedance ladder. Accordingly, the VGA uses the switches to connect the outputs of the segmented amplification circuit to the selected tap(s) of the impedance ladder. By changing the tap selection, the attenuation step of the VGA is controlled.
Source: PTBLXML, file of 2026-07-14 (ipgb20260714.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ANALOG DEVICES, INC. 2,069 patents | US company or organization | Wilmington, MA | ANALOG DEVICES INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PTBLXML, file of 2026-07-14 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David J. McLaurin | Raleigh, NC | 25 | PTBLXML, file of 2026-07-14 | |
| Kevin Gard | Raleigh, NC | 10 | PTBLXML, file of 2026-07-14 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H03F | Amplifiers | H03F3/195 | PTBLXML, file of 2026-07-14 |
| H03G | Control of amplification | H03G1/0088 | PTBLXML, file of 2026-07-14 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-06-16 | Assignment Assignment of assignor's interest | MCLAURIN, DAVID J. signed 2023-05-09 GARD, KEVIN signed 2023-05-09 | ANALOG DEVICES, INC. WILMINGTON, MA | 63972/724 | PASDL, file of 2026-10-15 |
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.