Antenna feed network for full duplex communication
US8111640B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 10, 2009 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Aug 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a wireless device for effecting two way wireless transmission, an antenna feed network, and a patch antenna. The wireless device includes an antenna assembly having two inputs accepting two feed signals shifted a feed signal phase difference apart. The antenna assembly receives a radiated signal and produces first and second received signals. First and second reflected feed signals are also produced at the two antenna inputs. A transmitter produces a transmission signal and a receiver receives the radiated signal while the transmission signal is transmitted by the antenna assembly. The antenna feed network interconnects the transmitter port, the receiver port, and the antenna assembly and produces the received signal while effecting substantial cancellation of the first and second reflected feed signals. Additionally, or alternatively, first and second transmission leakage signals at the received signal output substantially cancel each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.