Transceiver arrangement, communication device, and method
US9853801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2013 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0471
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transceiver arrangement comprising a receiver and a transmitter arranged for frequency-division duplex communication with a communication network, a transmission port for connecting to an antenna, a balancing impedance circuit arranged to provide an adaptive impedance arranged to mimic the impedance at the transmission port, a filtering arrangement connecting the receiver, transmitter, transmission port and balancing impedance circuit, and a common-mode signal reduction circuit is disclosed. The filter arrangement comprises filters of a first type arranged to pass signals at transmitter frequency and attenuate signals at receiver frequency and are connected between the transmitter and the transmission port and between the receiver and the balancing impedance circuit, and filters of a second type arranged to attenuate signals at transmitter frequency and pass signals at receiver frequency and are connected between the transmitter and the balancing impedance circuit and between the receiver and the transmission port. The common-mode signal reduction circuit comprises an inverting amplifier, the input of the inverting amplifier is provided by a voltage division between a first and a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.