Title
High Input Impedance NMOS-based Phase Shifter with Minimum Number of Passive Elements.
Abstract
In this paper, a new voltage-mode (VM) first-order phase shifter (all-pass filter) employing only four NMOS transistors and minimum number of passive elements (i.e. one resistor and one capacitor) is proposed. The proposed VM phase shifter has high input impedance and does not require passive element matching constraints. Moreover, since only two NMOS transistors are stacked between positive and negative supply voltages, the proposed circuit is suitable for low-voltage operation. Electronic tunability can be provided easily by replacing the employed resistor with an NMOS transistor operating in triode region. Simulation results based on 0.18 μm TSMC CMOS parameters with ±0.9 V supply voltages are given to demonstrate the performance of the proposed phase shifter.
Year
DOI
Venue
2012
10.1007/s00034-011-9290-0
Circuits Systems and Signal Processing
Keywords
Field
DocType
Phase shifter, All-pass filter, NMOS transistor, Tunability
Capacitor,NMOS logic,Control theory,CMOS,Electronic engineering,Resistor,Phase shift module,All-pass filter,Input impedance,Transistor,Electrical engineering,Mathematics
Journal
Volume
Issue
ISSN
31
1
1531-5878
Citations 
PageRank 
References 
8
0.86
3
Authors
2
Name
Order
Citations
PageRank
Shahram Minaei133854.11
Erkan Yüce214123.05