Title :
A 3 kHz flicker noise corner, odd-phase active mixer for direct conversion receivers
Author :
Dongju Lee ; MinJae Lee
Author_Institution :
Sch. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., Gwanju, South Korea
Abstract :
We present a new type of flicker noise, mismatch up-converting active mixer with an odd number of cascode switching pairs that relax the local oscillator (LO) switching speed, which reduces the flicker noise from indirect mechanisms. The high-crossing master LO drivers improve the IIP3 at a 1.2 V supply voltage, and a frequency-reconfigurable LO generator is also presented for multiband operations. The measured flicker noise corner is <; 4 kHz with 13 dBm IIP3 and > 60 dBm IIP2 at the 1.8 GHz effective LO frequency.
Keywords :
UHF mixers; UHF oscillators; circuit noise; driver circuits; flicker noise; receivers; IIP3; cascode switching pair; direct conversion receiver; flicker noise corner odd-phase active mixer; frequency 1.8 GHz; frequency 3 kHz; frequency-reconfigurable LO generator; high-crossing master LO driver; local oscillator; mismatch up-converting active mixer; voltage 1.2 V; 1f noise; Frequency measurement; Generators; Mixers; Noise measurement; Switches; CMOS; IIP2; IIP3; active mixer; direct conversion; flicker noise; pulse gating;
Conference_Titel :
European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014 - 40th
Conference_Location :
Venice Lido
Print_ISBN :
978-1-4799-5694-4
DOI :
10.1109/ESSCIRC.2014.6942064
