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

fYear

2009

fDate

23-25 July 2009

Firstpage

802

Lastpage

806

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCCAS.2009.5250408

Filename

5250408