Device for the coupling to a common antenna of at least two transmitting and/or receiving devices
US5212813A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Feb 26, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/213
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This device is intended for the coupling to a same antenna of at least two devices for transmitting and/or receiving microwave frequency signals operating in a same frequency range but having separated working bands. It is constituted by a circuit (M) comprising four passive filters (F.sub.1 -F.sub.4) and two circulators (C.sub.1, C.sub.2) defining four channels for respectively coupling each of the transmitters (E.sub.A, E.sub.B) and receivers (R.sub.A, R.sub.B) of the two devices (A, B) to the antenna. Each circulator (C.sub.1 ; C.sub.2) is connected by the intermediary of a filter to the transmitter of one of the devices and to the receiver of the other device in order to couple them to the antenna, while isolating them from each other. The invention has an application for coupling transmitting and/or receiving devices installed in aircrafts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.