Patent · US Expired

Repeater jamming transmitter and casing for the same

US6384765B1 · kind B1 · utility

23Cited by

12References

8Claims

0Family size

Assignee

Celsiustech Electronics AB · SE

Inventors

Per Sjöstrand · Stockholm, SE
Jan Grabs
Alf Näsvall · Sundbyberg, SE

Key dates

Filing date	Nov 5, 1999
Grant date	May 7, 2002
Priority date	—
Expiry date	Nov 5, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04K2203/32
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

This invention concerns a repeater jamming transmitter (2), and a casing arrangement with repeater jamming transmitter. The repeater jamming transmitter (2) comprises transmitter antenna (7), receiver antenna (8) and electronics part (10) with amplifier and control circuits. In order to avoid self-oscillation caused by leakage between the transmitter antenna (7) and the receiver antenna (8) and to maintain the isolation a special connection arrangement (7,8,10) is included in the repeater jamming transmitter. By means of the connection arrangement the amplification of the repeater jamming transmitter can be increased without self-oscillation arising.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.