Patents
US 8843083 B2: CMOS switching circuitry of a transmitter module
- Granted
- 2014-09-23
- Filed
- 2012-07-09 application 13544541
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Transmit modules typically constitute passive matching circuitry, harmonic trap filters and an antenna switch to provide isolation between the transmit bands as well as between transmit and receive functions. In complementary metal-oxide semiconductor (CMOS) processes the switch function is difficult to implement as a large voltage swing may result in breakdown of the MOS oxide, drain diode, source diode as well as substrate diodes. Therefore a switching function is provided at a node that has low impedance during transmit that limits the voltage swing that the MOS switches experience. The approach is particularly useful, but not limited to, half duplex transmissions such as those used in global system for mobile (GSM) communication, enhanced data for GSM Evolution (EDGE), and time division synchronous code division multiple access (TDSCDMA).
Source: PVGPATDIS, file of 2026-04-10 (ipg140923.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| RF Micro Devices (Cayman Islands), Ltd. 10 patents | Foreign company or organization | George Town, KY | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Malcolm James Smith | San Jose, CA | 18 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04B | Transmission | H04B1/48 | PVGPATDIS, file of 2026-04-10 |
| H03F | Amplifiers | H03F1/56 | 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 |
| 2012-07-09 | Assignment Assignment of assignor's interest | SMITH, MALCOLM signed 2012-07-06 | AMALFI SEMICONDUCTOR, INC. LOS GATOS, CA | 28516/817 | 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.