Hand-held communication equipment with a radiation shielding antenna apparatus
US5940039A · kind A · utility
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3833
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hand-held communication equipment with a radiation shielding antenna apparatus is provided. It comprises a hand-held main body and an antenna apparatus, characterized in that said antenna apparatus comprises an antenna rod and an antenna pedestal, wherein an inductive coil, an inductive coil fixing frame and a radiation shielding case are fixed in said pedestal; the lower end of the antenna rod has a globe joint; there is a plate spring at the upper end of the inductive coil pressing tightly against said antenna rod serving as the signal source of the antenna; there is a plug on the bottom of the fixing frame designed to fit in with an antenna socket in the hand-held main body for plugging the antenna apparatus into the main body; said radiation shielding case encases the inductive coil for producing the capacitance between said shielding case and said inductive coil, thereby changing the polarizing mode of the antenna; in the working state, the antenna rod tilts toward the backside of the hand-held communication equipment main body, so as to change the polarizing mode of the antenna into a dual foliar polarizing mode, thus enabling the head part of the user to be in the radiatio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.