Miniature on-chip quadrature phase generator for RF communications
US10326636B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2018 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Apr 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/2804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An RF frontend circuit includes an RF transceiver and a frequency synthesizer to perform frequency synthetization in a wide frequency spectrum. The frequency synthesizer generates an LO signal to the RF transceiver. The frequency synthesizer includes a quadrature signal generator to generate a quadrature LO signal based on the LO signal. The quadrature signal generator includes a first transformer. A first primary winding of the first transformer is disposed on a first substrate layer of the IC and a secondary winding of the first transformer is disposed on a second substrate layer of an IC. A second transformer is coupled to the first transformer in series. A second primary winding of the second transformer is disposed on the first substrate layer of the IC and a secondary winding of the second transformer is disposed on the second substrate layer of the IC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.