公开(公告)号：US09819322B2

公开(公告)日：2017-11-14

申请号：US14523982

申请日：2014-10-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Huijung Kim ,  Sanghoon Kang ,  Sooyong Kim ,  Chaehag Yi ,  Hyeongseok Jeong

IPC: H04B1/10 ,  H03G3/30 ,  H03F3/19 ,  H03F3/72 ,  H04B1/26

CPC classification number: H03G3/3036 ,  H03F3/19 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/7231 ,  H03F2203/7239 ,  H03G3/3052 ,  H03G3/3068 ,  H04W52/52 ,  H04W88/06

Abstract: A method is provided for operating a radio frequency (RF) receiver including a transimpedance amplifier, a capacitor selectively connected in parallel with the transimpedance amplifier, a channel selection filter unit connected to an output terminal of the transimpedance amplifier, and a variable gain amplification unit selectively connected in parallel with the channel selection filter unit. The method includes measuring signal-to-noise ratio from an output of the RF receiver, and comparing the measured signal-to-noise ratio with a reference signal-to-noise ratio. When the measured signal-to-noise ratio is greater than the reference signal-to-noise ratio, the capacitor is electrically disconnected from being connected in parallel with the transimpedance amplifier and a variation in the measured signal-to-noise ratio is measured. When the measured variation is in tolerance, the channel selection filter is bypassed to select the variable gain amplification unit.