Title:
AUTOMATIC AMPLITUDE CONTROL DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/183943
Kind Code:
A1
Abstract:
Provided in an embodiment of the present invention are an automatic amplitude control device and method. The device comprises: an oscillator and a current source array, wherein one terminal of the current source array is coupled with a source terminal of a cross-coupling tube in the oscillator, and another terminal of the current source array is coupled with the ground. The device further comprises: a comparator that is used for comparing an amplitude detection signal of the oscillator to a reference voltage signal so as to obtain a comparison result; and a controller that is used for controlling, according to the comparison result, a current of the current source array coupled with the source terminal. In the embodiment of the present invention, the design is simple, the area expenses are low, and power consumption is low.
Inventors:
ZHOU HANCHAO (CN)
WANG MINGGUI (CN)
CHEN YONGQUAN (CN)
DAI XISHI (CN)
QIN PENG (CN)
YE LIUXIAO (CN)
SONG XIANG (CN)
ZHANG CHENG (CN)
HE YUJUAN (CN)
WANG MINGGUI (CN)
CHEN YONGQUAN (CN)
DAI XISHI (CN)
QIN PENG (CN)
YE LIUXIAO (CN)
SONG XIANG (CN)
ZHANG CHENG (CN)
HE YUJUAN (CN)
Application Number:
PCT/CN2018/081402
Publication Date:
October 03, 2019
Filing Date:
March 30, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03L7/099
Foreign References:
| CN104796138A | 2015-07-22 | |||
| CN103036556A | 2013-04-10 | |||
| CN103187927A | 2013-07-03 | |||
| US20150180410A1 | 2015-06-25 | |||
| CN1671050A | 2005-09-21 |
Attorney, Agent or Firm:
E-TONE INTELLECTUAL PROPERTY FIRM (CN)
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