FEEDBACK LOOP CIRCUIT SUPPORTING MULTI-FREQUENCY BAND

WIPO Patent Application WO/2016/052785

A1

The present invention relates to a feedback loop circuit which can comprise: a first multi-input single-output switch for receiving the transmission of a plurality of wireless frequency signals and sequentially outputting a single wireless frequency signal through a single path in accordance with a set time; a plurality of local oscillators for generating LO frequency signals having different frequencies from each other; a second multi-input single-output switch for receiving the transmission of the LO frequency signals and sequentially outputting a single LO frequency signal through a single path in accordance with the set time; a mixer for receiving the transmission of the single wireless frequency signal and the single LO frequency signal, generating a single intermediate frequency signal by means of down conversion and sequentially outputting same; a band selection filter for sequentially receiving the transmission of the single intermediate frequency signal, filtering same by frequency bands and outputting same through a single path; and an analog/digital converter for sequentially receiving the transmission of the single intermediate frequency which has been filtered by means of the band selection filter and converting same into a digital signal.

KANG SANG-HYO (KR)
HWANG SOON-TAEK (KR)
JEON YONG-HUN (KR)
LEE HO-YEUN (KR)

PCT/KR2014/009327

April 07, 2016

October 02, 2014

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KMW INC (KR)

H03D7/16

US20110150045A1	2011-06-23
US20140015603A1	2014-01-16
US20140141735A1	2014-05-22
US20080204163A1	2008-08-28
US20020090974A1	2002-07-11

LEE, Keon-Joo et al. (KR)
이건주 (KR)

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