Title:
ELECTRONIC DEVICE OPERATING IN MULTIPLE BANDS
Document Type and Number:
WIPO Patent Application WO/2020/116708
Kind Code:
A1
Abstract:
Provided is an electronic device operating in multiple bands according to the present invention. The electronic device comprises a dual band filter configured to pass all received signals of a first frequency band and/or a second frequency band, and a low noise amplification unit (LNA) for amplifying a first signal in the first frequency band and a second signal in the second frequency band, and performing impedance matching on at least one of the first frequency band and the second frequency band. In addition, the electronic device further includes a modem for controlling an impedance matching unit in a receiving amplifier (LNA) so that the impedance matching is performed in one of the first frequency band (DL band) and the second frequency band (SDL band), thereby improving reception performance by dynamically using different frequency bands without increasing circuit complexity.
Inventors:
KANG YOUNGHEE (KR)
WON DONGSU (KR)
CHO EUNBIT (KR)
WON DONGSU (KR)
CHO EUNBIT (KR)
Application Number:
PCT/KR2018/016565
Publication Date:
June 11, 2020
Filing Date:
December 24, 2018
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04B1/00; H04B1/401; H04B1/44; H04W88/06
Foreign References:
| KR20160083901A | 2016-07-12 | |||
| US20020030545A1 | 2002-03-14 | |||
| KR20150012895A | 2015-02-04 | |||
| KR20090117816A | 2009-11-12 |
Other References:
ERICSSON: "SUL and SDL pairing: UE capability andRF performance", 3GPP TSG-RAN WG4 #88BIS, R4-1812030., 26 September 2018 (2018-09-26), Chengdu, China, XP051580806
Attorney, Agent or Firm:
PARK, Jang-Won (KR)
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