[1] Tang Lu, Wang ZhigongZeng XianwenXu Jian,. A low-phase-noise and low-power crystal oscillator for RF tuner [J]. Journal of Southeast University (English Edition), 2012, 28 (1): 21-24. [doi:10.3969/j.issn.1003-7985.2012.01.004]

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A low-phase-noise and low-power crystal oscillator for RF tuner()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

28

Issue:

2012 1

Page:

21-24

Research Field:

Electronic Science and Engineering

Publishing date:

2012-03-30

Info

Title:

A low-phase-noise and low-power crystal oscillator for RF tuner

Author(s):

Tang Lu;  Wang ZhigongZeng XianwenXu Jian

Institute of RF- & OE-ICs, Southeast University, Nanjing 210096, China

Keywords:

complementary metal oxide semiconductor(CMOS);  crystal oscillator;  phase noise;  power consumption

PACS:

TN752

DOI:

10.3969/j.issn.1003-7985.2012.01.004

Abstract:

A 37.5 MHz differential complementary metal oxide semiconductor(CMOS)crystal oscillator with low power and low phase noise for the radio frequency tuner of digital radio broadcasting digital radio mondiale(DRM)and digital audio broadcasting(DAB)systems is realized and characterized. The conventional cross-coupled n-type metal oxide semiconductor(NMOS)transistors are replaced by p-type metal oxide semiconductor(PMOS)transistors to decrease the phase noise in the core part of the crystal oscillator. A symmetry structure of the current mirror is adopted to increase the stability of direct current. The amplitude detecting circuit made up of a single-stage CMOS operational transconductance amplifier(OTA)and a simple amplitude detector is used to improve the current accuracy of the output signals. The chip is fabricated in a 0.18-μm CMOS process, and the total chip size is 0.35 mm×0.3 mm. Under a supply voltage of 1.8 V, the measured power consumption is 3.6 mW including the output buffer for 50 Ω testing loads. The proposed crystal oscillator exhibits a low phase noise of -134.7dBc/Hz at 1-kHz offset from the center frequency of 37.5 MHz.

References:

[1] European Broadcasting Union and Union Européenne de Radio-Télévision. ETSI ES 201 980 V2.2.1 Digital radio mondiale(DRM)system specification [S]. European Broadcasting Union and Union Européenne de Radio-Télévision, 2005.
[2] European Broadcasting Union and Union Européenne de Radio-Télévision. ETSI EN 300 401 V1.3.1 Digital audio broadcasting(DAB)to mobile, portable and fixed receivers [S]. European Broadcasting Union and Union Européenne de Radio-Télévision, 2000.
[3] Zhou Jianzheng, Wang Zhigong, Li Li, et al. Frequency planning of RF front-end for DRM receivers [J]. Chinese High Technology Letters, 2008, 18(5): 480-486.(in Chinese)
[4] Unkrich M A, Meyer R G. Conditions for start-up in crystal oscillators [J]. IEEE Journal of Solid-State Circuits, 1982, 17(1): 87-90.
[5] Toki M. High effective Q CMOS crystal oscillator design [C]//Proceedings of the Annual IEEE International Frequency Control Symposium. Besançon, France, 1999: 366-369.
[6] Hajimiri A, Lee T H. A general theory of phase noise in electrical oscillators [J]. IEEE Journal of Solid-State Circuits, 1998, 33(2):179-194.
[7] Oh N J, Lee S G. 11-GHz CMOS differential VCO with back-gate transformer feedback [J]. IEEE Microwave and Wireless Components Letters, 2005, 15(11): 733-735.
[8] Addouche M, Brendel R, Gillet D, et al. Modeling of quartz crystal oscillators by using nonlinear dipolar method [J]. IEEE Transactions on Ultrasonic, Ferroelectrics, and Frequency Control, 2003, 50(5): 487-495.
[9] Ivanilevic I I, Vasiljevic D M. The quartz crystal oscillator realization using current conveyors [J]. IEEE Transactions on Circuits and Systems, 1993, 40(8): 530-533.
[10] Karthaus U. A differential two-pin crystal oscillator-concept, analysis, and implementation [J]. IEEE Transactions on Circuits and Systems, 2006, 53(10): 1073-1077.
[11] Zhou Shaohua, Zeng Jianping, Xiong Qi, et al. Study and design of integrated crystal oscillator [C]//2009 International Conference on Wireless Communications and Signal Processing. Nanjing, China, 2009: 1027-1030.

Memo

Memo:

Biography: Tang Lu(1980—), male, doctor, lecturer, lutang2k@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.61106024), the Specialized Research Fund for the Doctoral Program of Higher Education(No. 20090092120012), the Science and Technology Program of Southeast University(No.KJ2010402).
Citation: Tang Lu, Wang Zhigong, Zeng Xianwen, et al.A low-phase-noise and low-power crystal oscillator for RF tuner[J].Journal of Southeast University(English Edition), 2012, 28(1):21-24.[doi:10.3969/j.issn.1003-7985.2012.01.004]

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