DocumentCode :
439577
Title :
A 14mA 2GHz 0.25 µm CMOS quadrature demodulator including a low phase noise local oscillator
Author :
Pfaff, D. ; Rogin, J. ; Qiuting Huang
Author_Institution :
Swiss Federal Intitute of Technology (ETH), Zurich
fYear :
2001
fDate :
18-20 Sept. 2001
Firstpage :
29
Lastpage :
32
Abstract :
A 2GHz quadrature demodulator in 0.25µm CMOS with low phase noise oscillator is presented. The system consumes less than 14mA from 2.5V supply and shows excellent performance: Low phase noise meeting triple band GSM specs, image rejection of more than 40dB, 11dBm mixer ilP3 and 0dBm CP, combined with a low noise figure of 7.2dB (DSB). The low power consumption is a consequence of avoiding any buffer in the quadrature LO generation. However, this requires the VCO frequency to double to 4GHz. An oscillator with a tuned microstrip resonator is proposed to overcome the limitation of integrated spiral inductors.
Keywords :
Demodulation; Energy consumption; Frequency; GSM; Local oscillators; Microstrip resonators; Noise figure; Phase noise; Power generation; Voltage-controlled oscillators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference, 2001. ESSCIRC 2001. Proceedings of the 27th European
Conference_Location :
Villach, Austria
Type :
conf
Filename :
1471326
Link To Document :
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