DocumentCode :
2562288
Title :
A 2.4GHz 0.18µm-CMOS sub-harmonic mixer for direct-down conversion receivers
Author :
Baghersalimi, Gholamreza ; Gilasgar, Mitra ; Saberkari, Alireza
Author_Institution :
Dept. of Electr. Eng., Guilan Univ., Rasht, Iran
fYear :
2009
fDate :
12-14 Oct. 2009
Firstpage :
1
Lastpage :
5
Abstract :
This paper presents a novel low power high linear sub-harmonic mixer for direct-down conversion receiver, in which an inductive connection between RF and LO stages is used to improve the linearity and enhance the gain of mixer. A comparison is done between two circuits for two possible conditions, high gain medium linearity (HGML) and high linearity medium gain (HLMG), and recently published works. Simulation results performed by advanced design system (ADS) in 0.18μm TSMC CMOS process show that the proposed mixer has exhibited better performance without increasing power consumption of 5mw. The inductive connection between RF and LO stages cases an enhancement of 6dB for conversion gain, 3.63dB for DSB NF and 4.7dBm for IIP3. For HGML condition, it shows a conversion gain of 13.71dB, DSB noise figure of 11.98dB, input referred 1dB compression point of -15dBm and the IIP3 of -0.3dBm.
Keywords :
CMOS integrated circuits; mixers (circuits); oscillators; radio receivers; CMOS subharmonic mixer; direct-down conversion receiver; frequency 2.4 GHz; gain 13.71 dB; gain 6 dB; high gain medium linearity; high linearity medium gain; inductive connection; local oscillator; noise figure 11.98 dB; power 5 mW; radiofrequency stage; size 0.18 micron; Circuit simulation; Energy consumption; Filters; Frequency synthesizers; Image converters; Linearity; Local oscillators; Mixers; Noise figure; Radio frequency; CMOS; IEEE 802.11a; Sub-Harmonic Mixer; Wireless; Zero-IF Receiver;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultra Modern Telecommunications & Workshops, 2009. ICUMT '09. International Conference on
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4244-3942-3
Electronic_ISBN :
978-1-4244-3941-6
Type :
conf
DOI :
10.1109/ICUMT.2009.5345612
Filename :
5345612
Link To Document :
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