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:
Jun. 23, 2015
Filed:
Dec. 26, 2012
Samsung Electronics Co. Ltd., Suwon-si, Gyeonggi-do, KR;
Mi-Hyun Son, Seoul, KR;
Yong-Hoon Kim, Suwon-si, KR;
Byung-Tae Yoon, Suwon-si, KR;
Jong-Wook Zeong, Seoul, KR;
Dong-Geun Lee, Hwaseong-si, KR;
Jae-Hun Lee, Daejeon, KR;
Song-Cheol Hong, Daejeon, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Korea Advanced Institute of Science and Technology (KAIST), Daejeon, KR;
Abstract
Provided is a method in which a Digital Pre-Distorter (DPD) performs digital pre-distortion on a received In-phase (I) signal, a received Quadrature-phase (Q) signal, a feedback I signal, and a feedback Q signal; a mixer mixes a signal output from the DPD with a frequency signal output from an oscillator; each of n phase shifters phase-shifts a signal output from the mixer according to a preset beamforming pattern; each of n Power Amplifiers (PAs) amplifies a signal output from an associated phase shifter according to a gain, the PAs connected to the associated phase shifter on a one-to-one basis; each of n envelope detectors detects an envelope signal from a signal output from an associated PA, the envelope detector connected to the associated PA on a one-to-one basis; and a control unit determines whether the n PAs operate normally, using the envelope signals output from the n envelope detectors.