Title
Polar Quantizer for Wireless Receivers: Theory, Analysis, and CMOS Implementation
Abstract
This paper presents the theory and analysis of IF polar receiver (PRX) architecture. By using new quantization techniques in the polar domain, the proposed receiver can boost the signal to quantization noise ratio (SQNR) compared to a traditional rectangular (I/Q) receiver. The proposed PRX is composed of a magnitude and a phase quantizer. The magnitude quantizer is similar to the conventional rectangular quantizer in voltage domain. The phase quantizer employs a time-to-digital converter (TDC) for phase detection. Furthermore, an intuitive graphical method is used to analyze the quantization properties of the polar quantization. A 10 bit polar quantizer is designed and fabricated in 130 nm CMOS, and achieves 2- to 5-dB of SQNR improvement compared to rectangular quantizer for signal bandwidths as high as 20 MHz.
Year
DOI
Venue
2014
10.1109/TCSI.2013.2284172
Circuits and Systems I: Regular Papers, IEEE Transactions  
Keywords
Field
DocType
CMOS integrated circuits,phase detectors,quantisation (signal),radio receivers,time-digital conversion,wireless channels,CMOS implementation,IF polar receiver architecture,PRX architecture,SQNR,TDC,intuitive graphical method,magnitude quantizer,phase detection,phase quantizer,polar domain,polar quantizer,signal to quantization noise ratio,size 130 nm,time-to-digital converter,voltage domain,wireless receivers,word length 10 bit,Analog to digital converter (ADC),averaging,intermediate frequency (IF),phase detector,polar receiver (PRX),quantizer,signal-to-quantization noise ratio (SQNR),time-to-digital converter (TDC)
Signal-to-quantization-noise ratio,Dynamic range,Wireless,Computer science,Voltage,Electronic engineering,CMOS,Phase detector,Quantization (signal processing),Time-to-digital converter
Journal
Volume
Issue
ISSN
61
3
1549-8328
Citations 
PageRank 
References 
8
0.52
10
Authors
4
Name
Order
Citations
PageRank
Peyman Nazari1484.66
Byung-Kwan Chun2132.71
Fred Tzeng3577.58
Payam Heydari464975.49