Signal receiving gain device for car mobile-phones
US5990840A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Mar 11, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/725
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal receiving gain device for car mobile-phones, is comprised of a main body which includes a housing, an insertion connecting pipe is extended out from one end of the housing for inserting in an electric socket provided in a car, the housing can hold therein an electric circuit board of which one end is connected to the insertion connecting pipe, the opposite end of the housing to the insertion connecting pipe is connected with an amplifying emitting antenna and an external antenna of the car respectively. When the external antenna receives a signal of the frequency within the specified range, a gain signal is obtained and is emitted by the amplifying emitting antenna, this further elevates the signal receiving capability of a mobile-phone in the car.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.