Current steering biasing for power control in cascode-based power amplifier stage of radar applications for improved reliability
US12395138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2022 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Feb 24, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7239
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier stage including multiple amplifier branch circuits, in which each amplifier branch circuit includes a cascode device, a source device, and a replica cascode device. The cascode device has current terminals coupled between an output node and an intermediate node, and has a control terminal receiving a corresponding activation signal. The source device has current terminals coupled between a supply reference node and the intermediate node, and has a control terminal receiving an input signal. The replica cascode device has current terminals coupled between a supply node and the intermediate node, and has a control terminal receiving a corresponding complementary activation signals. An output power level of the power amplifier stage is controlled by asserting a selected number of activation signals and corresponding complementary activation signals for activating a selected number of the amplifier branch circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.