Title
A Widely Tunable Balun Based On 2-Port N-Path Bandpass Filters With Embedded Phase Shifting
Abstract
This paper presents a widely tunable balanced-to-unbalanced (balun) bandpass filter (BPF). The proposed balun uses two 2-port N-path BPFs with embedded quadrature phase shifting to achieve the single-ended to differential conversion. Analytical expressions for the in-band (IB) differential to single-ended (DS) and single-ended to differential (SD) voltage gains are derived and validated. A prototype balun is implemented in a CMOS 65 nm technology and it occupies an active area of approximate to 0.7 mm(2). Post-layout simulations show a common mode rejection of approximate to 50 dB during the DS mode of operation. During the SD mode of operation, the balun has a phase imbalance of < 2.5 degrees and an amplitude imbalance of < 0.2 dB over the tuning range of 0.1-1 GHz.
Year
Venue
Field
2017
2017 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
Capacitor,Band-pass filter,Balun,Computer science,Control theory,Voltage,Common-mode rejection ratio,Electronic engineering,CMOS,Transfer function,Phase (waves)
DocType
ISSN
Citations 
Conference
0271-4302
1
PageRank 
References 
Authors
0.39
5
2
Name
Order
Citations
PageRank
Prateek Sharma120114.12
Nagarjuna Nallam2116.25