Title :
Wideband signal generator for cognitive radio five-port receiver
Author :
de Assis Brito Filho, F. ; De Sousa, Fernando Rangel
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Rio Grande do Norte, Natal, Brazil
Abstract :
This paper presents a wideband ring VCO for cognitive radio five-port based receivers. A three-stage differential topology using transmission gates was adopted in order to maintain wide and linear tuning range and a good phase-noise. Monte-Carlo analysis were made for evaluating the phase-shift response, which should be 120deg between stages. That analysis will be used to develop a behavioral model of the VCO with focus on five-port receiver simulations allowing time-saving. It was observed a fairly linear correlation between control voltage and oscillation frequency in the range between 200 MHz and 1800 MHz. The VCO was designed for IBM 130 nm CMOS technology.
Keywords :
Monte Carlo methods; cognitive radio; radio receivers; signal generators; telecommunication network topology; voltage-controlled oscillators; Monte-Carlo analysis; cognitive radio five-port receiver; frequency 200 MHz to 1800 MHz; linear tuning range; phase-shift response; three-stage differential topology; voltage controlled oscillator; wideband ring VCO; wideband signal generator; Analytical models; CMOS technology; Cognitive radio; Receivers; Semiconductor device modeling; Signal generators; Topology; Tuning; Voltage-controlled oscillators; Wideband;
Conference_Titel :
Communications, Circuits and Systems, 2009. ICCCAS 2009. International Conference on
Conference_Location :
Milpitas, CA
Print_ISBN :
978-1-4244-4886-9
Electronic_ISBN :
978-1-4244-4888-3
DOI :
10.1109/ICCCAS.2009.5250408
