Title:
MAGNETIC RESONANCE IMAGING APPARATUS, RADIO-FREQUENCY AMPLIFICATION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2016/011973
Kind Code:
A1
Abstract:
A radio-frequency amplification method, comprising modulating a first digital carrier signal (300) by means of a digital envelope signal (320) to generate a digital radio-frequency pulse signal having a first frequency, converting the digital radio-frequency pulse signal into an analogue radio-frequency pulse signal, amplifying the analogue radio-frequency pulse signal to generate a radio-frequency output signal, and converting an analogue feedback signal sampled from the radio-frequency output signal into a digital feedback signal (480); and demodulating the digital feedback signal (480) by means of a second digital carrier signal (500) to generate an I signal and a Q signal, and generating an amplitude setting signal (72) and a phase setting signal (74) according to the I signal and the Q signal, wherein the amplitude setting signal (72) is used for adjusting an amplitude of the digital envelope signal (320), and the phase setting signal (74) is used for adjusting a phase of the first digital carrier signal (300). The second digital carrier signal (500) has a predetermined frequency deviation with respect to the first digital carrier signal (300), and the second digital carrier signal (500) has a predetermined phase deviation with respect to the first digital carrier signal (300). Also provided are a radio-frequency amplification system and a magnetic resonance imaging apparatus.
Inventors:
JIANG XIN (CN)
SONG TINGTING (CN)
CHEN JIFENG (CN)
SONG TINGTING (CN)
CHEN JIFENG (CN)
Application Number:
PCT/CN2015/085022
Publication Date:
January 28, 2016
Filing Date:
July 24, 2015
Export Citation:
Assignee:
GEN ELECTRIC (US)
JIANG XIN (CN)
SONG TINGTING (CN)
CHEN JIFENG (CN)
JIANG XIN (CN)
SONG TINGTING (CN)
CHEN JIFENG (CN)
International Classes:
H03F3/189; G01R33/34
Foreign References:
| CN101473529A | 2009-07-01 | |||
| CN1384602A | 2002-12-11 | |||
| US7409004B2 | 2008-08-05 | |||
| US20060183454A1 | 2006-08-17 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
中国专利代理(香港)有限公司 (CN)
中国专利代理(香港)有限公司 (CN)
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