Title:
MULTI-BAND TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2021/172796
Kind Code:
A1
Abstract:
Disclosed is a multi-band transmitter for transmitting a multi-band signal. The multi-band transmitter comprises: a pre-distortion unit including a first digital pre-distorter (DPD) which pre-distorts a first band signal and a second DPD which pre-distorts a second band signal discontinuous from the first band signal; a conversion unit which analog-converts the pre-distorted first band signal and the pre-distorted second band signal; an amplification unit including a first power amplifier (PA), which amplifies the analog-converted first band signal, and a second PA, which amplifies the analog-converted second band signal; and a feedback unit which digital-converts the amplified first band signal to feed the digital-converted first band signal back to the first DPD and digital-converts the amplified second band signal to feed the digital-converted second band signal back to the second DPD. The pre-distortion unit performs pre-distortion by using the fed-back first band signal and the fed-back second band signal.
Inventors:
YUN MIN SEON (KR)
SHIM JOON HYONG (KR)
MOON YOUNG CHAN (KR)
SHIM JOON HYONG (KR)
MOON YOUNG CHAN (KR)
Application Number:
PCT/KR2021/001771
Publication Date:
September 02, 2021
Filing Date:
February 10, 2021
Export Citation:
Assignee:
KMW INC (KR)
International Classes:
H04B1/00; H04B1/04
Foreign References:
| US20150163079A1 | 2015-06-11 | |||
| US20150236731A1 | 2015-08-20 | |||
| US20160285485A1 | 2016-09-29 | |||
| KR101492381B1 | 2015-02-10 | |||
| US20170047952A1 | 2017-02-16 | |||
| KR20200023103A | 2020-03-04 |
Other References:
See also references of EP 4113850A4
Attorney, Agent or Firm:
LEE, Chulhee (KR)
Download PDF: