LO generation and distribution in a multi-band transceiver
US9160396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0082
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A VCO of a PLL outputs a first differential signal of frequency FVCO. A first divide-by-two circuit local to the VCO divides the first differential signal and outputs a first quadrature signal of frequency FVCO/2. Two of the component signals of the first quadrature signal are routed to a second divide-by-two circuit local to a first mixer of a first device. The second divide-by-two circuit outputs a second quadrature signal of frequency FVCO/4 to the first mixer. All four signals of the first quadrature signal of frequency FVCO/2 are routed through phase mismatch correction circuitry to a second mixer of a second device. In one example, FVCO is a tunable frequency of about ten gigahertz, the first device is an IEEE802.11b/g transmitter or receiver that transmits or receives in a first band, and the second device is an IEEE 802.11a transmitter or receiver that transmits or receives in a second band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.