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1. (WO2017157471) COMMUNICATION CIRCUIT FOR MULTI-ANTENNA APPARATUS

Pub. No.:    WO/2017/157471    International Application No.:    PCT/EP2016/056038
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Sat Mar 19 00:59:59 CET 2016
IPC: H04B 1/00
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: JAKOBSSON, Peter
Title: COMMUNICATION CIRCUIT FOR MULTI-ANTENNA APPARATUS
Abstract:
A communication circuit (10) for communication at a carrier frequency via multiple antenna elements (5a-d) of a radio apparatus (1) is disclosed. The communication circuit (1) comprises a plurality of radio units (15a-d), wherein each radio unit (15a-d) of said plurality of radio units (15a-d) is arranged to be connected to a separate antenna element (5a-d). An LO signal generation unit (20) is arranged to generate a plurality of LO signals (LOa-d) at distinct frequencies (fLOa-fLOd), and supply a unique LO signal (LOa-d) of the plurality of LO signals (LOa-d) to each radio unit (15a-d) of the plurality of radio units (15a-d). A corresponding radio apparatus and method are also disclosed.