Wideband tunable frequency single-sideband converter with PVT tracking
US11483022B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2020 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jan 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2007/0192
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A wideband tunable frequency single-subband converter is proposed. The wideband frequency tunable converter operates within a wideband and tunable frequency range, and has process, voltage, and temperature (PVT) tracking capability. In one embodiment, the wideband converter comprises a frequency tunable polyphase filter having a plurality of switchable polyphase resistors. The polyphase resistors are controlled by a frequency tuning control signal to achieve wideband frequency tunability. In a preferred embodiment, a triode mode transistor is used as a polyphase resistor, and a different resistance value of the polyphase filter is realized by turning on one or multiple of the different transistors in triode mode. In addition, a constant Gm(R) bias generator is used to provide the gate biases to the triode mode transistors to maintain a constant and stable resistance value across PVT and other variation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.