Transmission-reception diplexer having a diode RF switch
US5220679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Apr 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/48
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a transmitting-receiving diplexer having a transmitting channel for forwarding a radio-frequency transmission signal to an antenna connectible to an antenna terminal and having a receiving channel for forwarding a signal received from the antenna to a receiver, at least one diode is provided in the receiving channel as an RF switch. A rectifier is connected to the transmitting channel and to the diode or diodes of the RF switch, the rectifier generating a blocking voltage required for blocking the receiving channel during transmission of the transmission signal. Further, a control switch is provided that disconnects the blocking voltage from the diode or diodes of the RF switch during reception.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.