Diversity antenna for radio communications
US5764193A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Mar 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A diversity antenna for radio communications including a pair of conductive thin-film patterns used for a first antenna and another pair of conductive thin-film patterns used for a second antenna, the thin-film patterns being installed on a printed circuit board along the direction of the length of the circuit board; a first choke coil which is used to stop a leakage current from the first antenna and cause attenuation of a coupling current from the second antenna, the first choke coil being installed at a location where the leakage current distribution of the first antenna reaches the maximum in a feeder cable connected to the first antenna; and a second choke coil which is used to stop the leakage current from the second antenna, the second choke coil being installed at a location where the leakage current distribution of the second antenna reaches the maximum in a feeder cable for the second antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.