公开(公告)号：EP2845321A4

公开(公告)日：2015-05-06

申请号：EP12875751

申请日：2012-05-03

Applicant: ERICSSON TELEFON AB L M

Inventor： JOHANSSON BERNT ,  BERGLUND BO

IPC: H04B1/00 ,  H04B1/16

CPC classification number: H03J7/02 ,  H04B1/0007 ,  H04B1/0067

Abstract: A radio communication receiver apparatus is configured to process multiple radio frequency bands in a telecommunication system. The apparatus includes a plurality of digital receiver chains wherein each digital receiver chain is coupled to receive a digital representation of the multiple radio frequency bands, including a particular radio frequency band for processing by the respective digital receiver chain. Each digital receiver chain includes a digital receiver that is programmable to select a particular radio frequency band from the digital representation of the multiple radio frequency bands, and configured to down convert the selected radio frequency band into a digital baseband signal associated with the particular radio frequency band. Built in calibration is provided by operation of direct radio frequency technology.

公开(公告)号：EP2697863A4

公开(公告)日：2014-10-29

申请号：EP11863465

申请日：2011-04-11

Applicant: ERICSSON TELEFON AB L M

Inventor： REXBERG LEONARD ,  JOHANSSON BERNT

IPC: H01Q3/26 ,  H04B1/00 ,  H04B1/18 ,  H04B1/40 ,  H04B7/04 ,  H04B7/06 ,  H04B17/00 ,  H04W88/06

CPC classification number: H04B1/40 ,  H01Q3/26 ,  H01Q3/267 ,  H04B7/0413 ,  H04B17/12 ,  H04W88/06

公开(公告)号：EP2847867A4

公开(公告)日：2016-02-10

申请号：EP12875989

申请日：2012-05-03

Applicant: ERICSSON TELEFON AB L M

Inventor： JOHANSSON BERNT ,  BERGLUND BO

IPC: H04B1/04 ,  H04B1/00 ,  H04L27/36

CPC classification number: H04B1/04 ,  H03F1/3241 ,  H03F1/34 ,  H03F3/24 ,  H04B1/0003 ,  H04B1/001 ,  H04B1/0025 ,  H04B1/0053 ,  H04B1/0483 ,  H04B2001/0425 ,  H04B2001/0433 ,  H04B2001/0491

Abstract: A radio communication transmitter apparatus 20 is operable to transmit multiple radio frequency bands in a telecommunication system. The apparatus comprises a plurality of digital transmitter chains 211 to 21N, wherein each digital transmitter chain is coupled to receive a digital representation 271 to 27N of a respective base band signal for processing by a respective digital transmitter chain. Each digital transmitter chain 211 to 21N comprises a digital transmitter 251 to 25N that is adapted to convert a respective digital base band signal directly into a digital representation of a radio frequency signal 231 to 23N. A digital combining unit 25 is coupled to receive the output of each digital transmitter chain 211 to 21N, and adapted to combine the digital representation of a radio frequency signal 231 to 23N received from each digital transmitter chain 211 to 21N into a digital representation of a radio frequency signal 26 comprising multiple radio frequency bands. A digital to analogue converter 27 is coupled to receive the digital representation of a radio frequency signal 26 comprising multiple radio frequency bands, and adapted to convert the digital representation of a radio frequency signal 26 into an analogue radio frequency signal 28 comprising multiple radio frequency bands.

公开(公告)号：EP2845322A4

公开(公告)日：2015-04-29

申请号：EP12875926

申请日：2012-10-23

Applicant: ERICSSON TELEFON AB L M

Inventor： JOHANSSON BERNT ,  BERGLUND BO

IPC: H04B1/00 ,  H04B1/403 ,  H04W88/08

CPC classification number: H04B1/40 ,  H04B1/0007 ,  H04B1/005 ,  H04B1/0067 ,  H04B1/26 ,  H04B1/406 ,  H04W88/085