Semiconductor integrated circuit for communication and terminal device for mobile communication
US7454176B2 · kind B2 · utility
2Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2006 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | May 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a semiconductor integrated circuit for communication (RF IC) operable in a mode for receiving a received signal subjected to phase modulation and amplitude modulation and a mode for receiving a received signal subjected only to phase modulation. In the semiconductor integrated circuit for communication, a frequency band of a loop filter in a PLL circuit is switched and set so as to become large in a reception mode and become small in a transmission mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.