Patents
US 8629725 B2: Power amplifier having a nonlinear output capacitance equalization
- Granted
- 2014-01-14
- Filed
- 2011-12-02 application 13310568
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Power amplifier (PA), regardless of the process used for the manufacturing of its devices, suffers from a nonlinear output capacitance that has significant impact on various aspects of the PA performance. This output capacitance is dependent on the large output voltage swing. Accordingly a compensation capacitance is added at the output of the PA that has a behavior that is inverse respective of the output voltage of that of the output capacitance of the PA. Connecting the compensation capacitor in parallel to the PA output capacitance, results in a total capacitance that is the sum of the output capacitance and its compensation capacitance. The total output capacitance is therefore essentially stable throughout the output voltage swing.
Source: PVGPATDIS, file of 2026-04-10 (ipg140114.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 | |
| Chu-hsiung Ho | Milpitas, CA | 5 | PVGPATDIS, file of 2026-04-10 | |
| Stephen James Franck | Felton, CA | 19 | PVGPATDIS, file of 2026-04-10 | |
| Tom Biedka | San Jose, CA | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H03F | Amplifiers | H03F1/3205 | 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 |
| 2012-06-25 | Assignment Assignment of assignor's interest | BIEDKA, TOM signed 2011-12-02 FRANCK, STEPHEN signed 2011-12-02 HO, CHU HSIUNG signed 2011-12-02 MAXIM, GEORGE signed 2011-12-02 SCOTT, BAKER signed 2011-12-02 | AMALFI SEMICONDUCTOR, INC. LOS GATOS, CA | 28436/431 | 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.