Wireless communication circuit, wireless communication terminal and method, recording medium, and program
US7031662B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Nov 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3833
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a communication terminal that is capable of carrying out communications based on a plurality of communication standards, for example, a cellular phone, information representing a reception carrier frequency of a wireless channel being received by a cellular-phone functional block is output from a CPU to a contactless-IC-card-reader/writer functional block. In the contactless-IC-card-reader/writer functional block, a controller controls a switching circuit to switch a transmission carrier frequency being used so that harmonic components of an electromagnetic wave radiated from a coil antenna will not work as an electromagnetic-interference wave that affects reception sensitivity of the cellular-phone functional block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.