Circuit assembly for producing a one-way connection between transmitter and/or receiver units and an antenna
US6714766B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Jan 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/46
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a circuit assembly for producing a one-way connection between a first transmitter or receiver (12) operating on a first frequency and an antenna (16), on the one hand, as well as between a second transmitter or receiver (14) operating on a second frequency and the antenna (16) on the other, each transmitter or receiver having a port for producing a connection to the antenna (16) a filter (18) is used having at least one symmetrical port, the passband of which covers the first and the second frequency, whereby the antenna (16) is connected to one of the ports of the filter (18). A first passive network (24) between one lead of the at least one symmetrical port of the filter (18) and the input of the first transmitter or receiver (12) short-circuits at the second frequency the port (20) of the first transmitter or receiver (12). A second passive network (26) between the other lead of the at least one symmetrical port of the filter (18) and the port (22) of the second transmitter or receiver (14) short-circuits the port (22) of the second transmitter or receiver (14) at the first frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.