Built-in antenna for radio communication terminals
US6271796A · kind A · utility
36Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The built-in antenna for radio communication terminals of the present invention includes a loop antenna with a circumference of approximately one wavelength or less placed at an extremely short distance compared with the wavelength from the plane of the terminal board so that its loop plane may be perpendicular to the plane of said terminal bottom board which is opposite to the human body during communication, and a balanced/unbalanced conversion circuit with an impedance conversion function that supplies power to this loop antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.