The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2015
Filed:
Apr. 08, 2013
Excelio Technology (Shenzhen) Co., Ltd., Shenzhen, CN;
Wuxi Excelio Technology Co., Ltd., Wuxi, Jiangsu, CN;
Patrick Bian Wu, Shenzhen, CN;
Xingyi Wang, Shenzhen, CN;
Fuqiang Han, Shenzhen, CN;
Shehu Qi, Shenzhen, CN;
Yuanming Luo, Shenzhen, CN;
EXCELIO Technology (Shenzhen) CO., LTD, Shenzhen, CN;
Wuxi EXCELIO Technology CO., LTD, Wuxi, CN;
Abstract
The present invention relates to the field of radio frequency, and provides a band-gap reference self-starting circuit and a passive radio frequency identification tag. The self-starting circuit comprises: a first switch device unit, configured to generate a first leakage current in an off state; a second switch device unit, configured to generate a second leakage current lower than the first leakage current in the off state, and generate a control voltage according to the first leakage current and the second leakage current; a control unit, configured to generate a starting control signal according to the control voltage; and a band-gap reference generating unit, configured to generate a reference voltage according to the starting control signal, and control the second switch device unit to enter dormancy using the reference voltage. The present invention boosts the control voltage using the leakage current generated by a field effect transistor in the off state, thereby implementing self-starting and generating the reference voltage, and controls the starting control unit to enter dormancy after the reference voltage is generated, thereby reducing system power consumption.