Open AccessLow‐noise amplifier by using a signal‐reuse wake‐up technology
Author(s) -
Hsieh JianYu
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.0700
Subject(s) - low noise amplifier , signal (programming language) , amplifier , noise (video) , envelope detector , electrical engineering , sensitivity (control systems) , electronic engineering , power (physics) , computer science , engineering , physics , cmos , quantum mechanics , artificial intelligence , image (mathematics) , programming language
A V‐band low‐power signal‐reuse low‐noise amplifier (SRLNA) implemented in 90 nm complementary metal–oxide–semiconductor technology is presented. The proposed SRLNA uses zero‐ V T and signal‐reuse wake‐up technologies to improve wake‐up sensitivity and reduce power consumption. The SRLNA can be activated or turned off automatically based on the amplitude of the radio‐frequency signal power. Time delays of the zero‐ V T envelope detector and limiting amplifier are analysed in order to loose the constraint on the maximum data‐rate. Moreover, the relationship between noise figure (NF), power gain ( S 21 ), input and output return losses ( S 11 and S 22 ) of the SRLNA are discussed in detail, with the quality factors Q nf , Q I , Q in , and Q L defined for NF, S 21 , S 11 , and S 22 parameters derivations. The proposed SRLNA consumes 25 and 12 mW at activate and sleep modes, respectively. The sensitivity of the proposed SRLNA can achieve about −50 dBm.