Title :
Programmable Active Inductor Based Quadrature VCO Design
Author :
Huang, Guochi ; Kim, Byung-Sung
Author_Institution :
Sch. of Inf. & Commun., Sungkyunkwan Univ., Suwon
Abstract :
This work proposes an inductor-less programmable quadrature VCO which adopts a modified grounded active inductor with a PMOS resistor in the feedback path. The model of the active inductor using PMOS resistor feedback is also presented in this work, which is more accurate than the previous models by considering the effect of the parasitic capacitance in the feedback path. The programmable QVCO can oscillate in three different wireless bands. Therefore, it can be used in the multi-mode transceiver system or software-defined radio system.
Keywords :
CMOS integrated circuits; capacitance; feedback; inductors; resistors; software radio; transceivers; voltage-controlled oscillators; PMOS resistor feedback; feedback path; grounded active inductor; inductor-less programmable quadrature VCO; multimode transceiver system; parasitic capacitance; programmable QVCO; programmable active inductor; quadrature VCO design; software-defined radio system; Active inductors; Bluetooth; Circuits; Feedback; Q factor; Radio frequency; Resistors; Signal generators; Transceivers; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554549
