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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.:

US 10122476 B1

PDFFull Text
Date of Patent:
Nov. 06, 2018

Filed:

Nov. 08, 2013

Radio unit with internal parallel antenna calibration

Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Xuejun Sun, Beijing, CN;

Chang Liu, Beijing, CN;

Assignee:

TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;

Attorney:

Murphy, Bilak & Homiller, PLLC

Primary Examiner:

Edward Urban

Assistant Examiner:

Rui Hu

Int. Cl.
CPC ...
H03C 1/62 (2006.01); H04B 17/00 (2015.01); H04B 17/12 (2015.01); H04B 17/21 (2015.01); H04B 17/10 (2015.01); H04B 17/14 (2015.01); H04B 7/04 (2017.01);
U.S. Cl.
CPC ...
H04B 17/12 (2015.01); H04B 17/102 (2015.01); H04B 17/103 (2015.01); H04B 17/14 (2015.01); H04B 17/21 (2015.01); H04B 7/04 (2013.01); H04B 17/0085 (2013.01);
Abstract

The present disclosure provides a radio unit with internal parallel antenna calibration. The radio unit comprises an antenna calibrator, a plurality of transmission signal processing sections, a plurality of power amplifiers, a plurality of bandpass filters, a plurality of couplers, a plurality of reception signal processing sections and a first combiner. The antenna calibrator is configured to generate a plurality of individually identifiable reference signals used for transmission calibration. The transmission signal processing sections are configured to modulate the signals in parallel. The power amplifiers are configured to amplify the modulated signals to predetermined power levels in parallel. The bandpass filters are configured to apply bandpass filtering operations to the modulated signals in parallel. The couplers are configured to couple the filtered signals to a first combiner, which combines the filtered signals. One of the reception signal processing sections is configured to identify and demodulate each of the filtered signals constituting the combined signals. The antenna calibrator is further configured to compute transmission calibration vectors by comparing the demodulated signals with the reference signals.

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