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Title:
RADIO FREQUENCY TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2018/214454
Kind Code:
A1
Abstract:
Disclosed is a radio frequency transmitter, which falls within the technical field of communications. The radio frequency transmitter comprises: a digital-to-analogue converter, a passive network, two buffers, a frequency mixer and a power amplifier, wherein two output ends of the digital-to-analogue converter are connected to two input nodes of the passive network on a one-to-one basis, and the two output ends of the digital-to-analogue converter are connected to input ends of the two buffers on a one-to-one basis; output ends of the two buffers are connected to two input ends of the frequency mixer on a one-to-one basis; an output end of the frequency mixer is connected to an input end of the power amplifier; an output end of the power amplifier is connected to an antenna; and the passive network is used for carrying out filtering processing on an input current signal and also converting the current signal into a voltage signal. By means of replacing a trans-impedance amplifier in the related art with a passive network and two buffers, the present application reduces a noise level of and increases a bandwidth of a radio frequency transmitter under the same power consumption, and reduces the power consumption of the radio frequency transmitter under the same noise level.

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Inventors:
FENG ZEMIN (CN)
HOU CHENLONG (CN)
Application Number:
PCT/CN2017/113382
Publication Date:
November 29, 2018
Filing Date:
November 28, 2017
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B1/04
Domestic Patent References:
WO2016076981A12016-05-19
Foreign References:
CN103684330A2014-03-26
CN103973254A2014-08-06
CN101588179A2009-11-25
CN105278404A2016-01-27
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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