Patents
US 8624678 B2: Output stage of a power amplifier having a switched-bulk biasing and adaptive biasing
- Granted
- 2014-01-07
- Filed
- 2011-12-02 application 13310623
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A power amplifier (PA) using switched-bulk biasing to minimize the risk of output stage snapback effect is disclosed. An adaptive biasing of the output stage prevents device breakdown while accommodating large voltage swings. These protection techniques can be applied to all types of cascode configurations of a PA, including single-ended, differential, quadrature, segmented and any combination thereto.
Source: PVGPATDIS, file of 2026-04-10 (ipg140107.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| RF Micro Devices (Cayman Islands), Ltd. 10 patents | Foreign company or organization | Greensboro, NC | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Baker Scott | San Jose, CA | 251 | PVGPATDIS, file of 2026-04-10 | |
| George Maxim | Milpitas, CA | 296 | PVGPATDIS, file of 2026-04-10 | |
| Stephen James Franck | Felton, CA | 19 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H03F | Amplifiers | H03F3/245 | 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 |
|---|---|---|---|---|---|
| 2016-06-14 | Name change Change of name | TRIQUINT INTERNATIONAL PTE. LTD. signed 2016-05-02 | QORVO INTERNATIONAL PTE. LTD. AVENUE 1, #04-01 | 38991/899 | ECORSEXC, file of 2026-09-25 |
| 2016-05-06 | Assignment Assignment of assignor's interest | RF MICRO DEVICES (CAYMAN ISLANDS), LTD. signed 2016-05-02 | TRIQUINT INTERNATIONAL PTE. LTD. AVENUE 1, #04-01 | 38485/869 | ECORSEXC, file of 2026-09-25 |
| 2012-11-29 | Assignment Assignment of assignor's interest | AMALFI SEMICONDUCTOR, INC. signed 2012-11-08 | RF MICRO DEVICES (CAYMAN ISLANDS), LTD. GREENSBORO, NC | 29375/148 | ECORSEXC, file of 2026-09-25 |
| 2012-07-02 | Assignment Assignment of assignor's interest | FRANCK, STEPHEN signed 2011-11-23 SCOTT, BAKER signed 2011-11-29 MAXIM, GEORGE signed 2011-12-01 | AMALFI SEMICONDUCTOR, INC. LOS GATOS, CA | 28479/564 | 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.