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:
Nov. 16, 2021
Filed:
Sep. 22, 2017
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Henrik Sjöland, Lund, SE;
Stefan Andersson, Flyinge, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The disclosure relates to arrangements for antenna interfaces configurable to efficiently support different communication modes. This is achieved by an antenna connection circuitfor a communication devicewherein the antenna connection circuitis configurable for communication modes. The antenna connection circuit comprises a first quarter-wave transformer qwcoupled between an antenna port A and an transmitter port Tx, and a second quarter-wave transformer qwcoupled between the antenna port A and a receiver port Rx. The antenna connection circuit further comprises a first ground switch scoupled between the receiver port Rx and a first ground connection g, and a second ground switch sis coupled between the transmitter port Tx and a second ground connection g. The antenna connection circuit further comprises a resistor R and a resistor switch scoupled in series between the receiver port Rx and the transmitter port Tx, and an inverting amplifier switch scoupled between the receiver port Rx and an input port Iof an inverting amplifier Amp, and an output port Oof the inverting amplifier Ampis coupled to the transmitter port Tx.