Data processing terminal, terminal designing apparatus and method, computer program, and information storing medium
US7002529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Second ground plane (18), substantially rectangular in shape, is connected to first ground plane (17) mounted with a data processing circuit, and radio communication circuit (12) makes radio communications at communication wavelength λ. A portion of second ground plane (18) from ground connecting means (14) to ground connecting means (33) along continuous edges of second ground plane (18) acts as an antenna. However, since the longest distance a between a plurality of ground connecting means (14, 33) along the continuous edges of second ground plane (18) satisfies “a<λ/2α” (where α is a coefficient equal to or larger than “1”), its resonant frequency is sufficiently higher than the communication frequency of the radio communication circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.