Proceedings ArticleDOI
Explicit transfer function of RC polyphase filter for wireless transceiver analog front-end
Haruo Kobayashi,J. Kang,T. Kitahara,S. Takigami,H. Sadamura +4 more
- pp 137-140
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TLDR
In this paper, the authors derived explicit frequency transfer functions for first-, second-and third-order RC polyphase filters (which are important components in analog front-end of wireless transceivers for I, Q signal generation and image rejection) using a concept of complex signal and circulant matrix properties.Abstract:
This paper derives explicit frequency transfer functions for first-, second- and third-order RC polyphase filters (which are important components in analog front-end of wireless transceivers for I, Q signal generation and image rejection) using a concept of complex signal and circulant matrix properties. The results allow us to exploit their characteristics systematically.read more
Citations
More filters
Journal ArticleDOI
Analysis and Design of Passive Polyphase Filters
TL;DR: Passive RC polyphase filters (PPFs) are analyzed in detail in this paper and the rules for optimal pole frequency planning to maximize the image-reject ratio provided by a PPF are given.
Journal ArticleDOI
A 0.87 W Transceiver IC for 100 Gigabit Ethernet in 40 nm CMOS
Hyosup Won,Taehun Yoon,Jinho Han,Joon-Yeong Lee,Jong-Hyeok Yoon,Taeho Kim,Jeongsup Lee,Sangeun Lee,Kwangseok Han,Jin-Hee Lee,Jinho Park,Hyeon-Min Bae +11 more
TL;DR: This paper describes a low-power 100 Gigabit Ethernet transceiver IC compliant with IEEE802.3ba 100GBASE-LR4 in 40 nm CMOS, which is the best among the efficiencies achieved by recently published 25 Gb/s transceivers.
Patent
Down-conversion circuit
TL;DR: In this article, a down-conversion circuit (30) for a receiver circuit (10) is disclosed, and the down- conversion circuit 30 comprises a first passive switching mixer (70) arranged to downconvert a received radio frequency, RF, signal with a first local oscillator, LO, signal (LO1) having a first duty cycle for generating a first downconverted signal at an output port (75) of the first SVM.
Journal ArticleDOI
A 5-6-GHz polyphase filter with tunable I/Q phase balance
TL;DR: A tunable polyphase filter with integrated input and output buffers was designed and fabricated in a 0.4 /spl mu/m SiGe BiCMOS technology with a 5-6 GHz bandwidth as discussed by the authors.
Proceedings ArticleDOI
I-Q signal generation techniques for communication IC testing and ATE systems
TL;DR: The characteristics of the complex BP ΔΣ DA modulator and its extension - a complex multi-BP modulator - as well as its newly derived Data Weighted Averaging (DWA) algorithm for its linearity enhancement are examined.
References
More filters
Book
Time-Frequency Analysis
TL;DR: In this article, the authors present a general approach and the Kernel Method for reduced interference in the representation of signal signals, which is based on the Wigner distribution and the characteristic function operator.
Journal ArticleDOI
CMOS mixers and polyphase filters for large image rejection
TL;DR: In this article, a powerful phasor-based analysis is used to explain all common image-reject topologies and their limitations, and it is shown how this can replace complex trigonometric equations commonly found in the literature.
Journal ArticleDOI
A single-chip 900-MHz spread-spectrum wireless transceiver in 1-/spl mu/m CMOS. I. Architecture and transmitter design
Ahmadreza Rofougaran,G. Chang,Jacob Rael,J.Y.-C. Chang,M. Rofougaran,P.J. Chang,M. Djafari,M.-K. Ku,E.W. Roth,Asad A. Abidi,Henry Samueli +10 more
TL;DR: A single-chip transceiver for frequency-hopped code division multiple access (CDMA) in the 900 MHz industrial, scientific and medical (ISM) band is implemented in 1-/spl mu/m CMOS.
Book
CMOS wireless transceiver design
Jan Crols,Michiel Steyaert +1 more
TL;DR: This book discusses the construction of CMOS Transceivers in the Frequency Domain, as well as their applications in wireless communications, and some of the techniques used in this area.
Proceedings ArticleDOI
A single-chip CMOS transceiver for DCS-1800 wireless communications
Michiel Steyaert,M. Borremans,Jozef Janssens,B. De Muer,I. Itoh,Jan Craninckx,Jan Crols,E. Morifuji,S. Momose,Willy Sansen +9 more
TL;DR: This CMOS transceiver chip for the DCS-1800 wireless communication system is realized in a 0.25 /spl mu/m CMOS process, which minimizes the number of high-frequency external nodes, as these are difficult to drive with CMOS circuits.