Title :
A current reused oscillator-mixer for DS-UWB
Author :
Koivisto, Tero ; Tiiliharju, Esa
Author_Institution :
Microelectron. Lab., Univ. of Turku, Turku, Finland
Abstract :
In this paper, we propose a quadrature oscillator-mixer combination. This circuit reuses the bleeding current, which relaxes mixer design trade-offs noise, linearity and gain at low supply voltages, by replacing the bleed current source as an oscillator. The linearized merged oscillator-mixer achieves a 8 dB gain, -4 dBV IIP3 and 6.5 dB white noise figure at the 7 GHz frequency. The phase-noise of the quadrature oscillator is -97 dBc/Hz at the 1 MHz offset from the 7 GHz LO frequency. The circuit consumes 10 mA from a 1.2 V supply.
Keywords :
microwave mixers; microwave oscillators; spread spectrum communication; ultra wideband communication; DS-UWB; current 10 mA; current reused quadrature oscillator-mixer; frequency 7 GHz; gain 8 dB; noise figure 6.5 dB; phase noise; voltage 1.2 V; Bandwidth; Circuits; Laboratories; Linearity; Microelectronics; Noise measurement; Radio frequency; Stacking; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
NORCHIP, 2009
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-4310-9
Electronic_ISBN :
978-1-4244-4311-6
DOI :
10.1109/NORCHP.2009.5397797
