The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Feb. 27, 2018
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Stefan Andersson, Flyinge, SE;
Imad ud Din, Lund, SE;
Daniel Eckerbert, Landskrona, SE;
Henrik Sjöland, Lund, SE;
Johan Wernehag, Malmö, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
A transceiver suitable for frequency division duplex (FDD) communication is disclosed. In one exemplary embodiment, a transmitter leakage reduction circuit for a transceiver is described. The transmitter leakage reduction circuit comprises an auxiliary power amplifier, first and second filters, and a signal transmission arrangement. The auxiliary power amplifier is configured to provide an auxiliary power amplifier output signal that represents an output signal of a power amplifier of the transmitter with a controllable phase shift or gain output. The first and second filters are configured to attenuate any signals in the receive frequency band of the respective power amplifier output signal and auxiliary power amplifier output signal. The signal transmission arrangement is configured to suppress a contribution of the power amplifier output signal from a signal received from an RF connecting point using the auxiliary power amplifier output signal to obtain a received signal that is input to the receiver.