[1] Lei Xuemei, Wang Zhigong, Wang Keping, et al. A wideband low-phase-noise LC VCOfor DRM/DAB frequency synthesizer [J]. Journal of Southeast University (English Edition), 2010, 26 (4): 528-531. [doi:10.3969/j.issn.1003-7985.2010.04.005]

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A wideband low-phase-noise LC VCOfor DRM/DAB frequency synthesizer()

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

Volumn:

26

Issue:

2010 4

Page:

528-531

Research Field:

Electronic Science and Engineering

Publishing date:

2010-12-30

Info

Title:

A wideband low-phase-noise LC VCOfor DRM/DAB frequency synthesizer

Author(s):

Lei Xuemei¹;  2;  Wang Zhigong¹;  Wang Keping¹

¹Institute of RF- & OE-ICs, Southeast University, Nanjing 210096, China
² School of Electronic and Information Engineering, Inner Mongolia University, Hohhot 010021, China

Keywords:

CMOS voltage-controlled oscillator;  switched capacitor bank;  MOS varactors;  wideband;  low phase noise;  DRM/DAB frequency synthesizer

PACS:

TN752

DOI:

10.3969/j.issn.1003-7985.2010.04.005

Abstract:

The wideband CMOS voltage-controlled oscillator(VCO)with low phase noise and low power consumption is presented for a DRM/DAB(digital radio mondiale and digital audio broadcasting)frequency synthesizer. In order to obtain a wide band and a large tuning range, a parallel switched capacitor bank is added in the LC tank. The proposed VCO is implemented in SMIC 0.18-μm RF CMOS technology and the chip area is 750 μm×560 μm, including the test buffer circuit and the pads. Measured results show that the tuning range is 44.6%; i.e., the frequency turning range is from 2.27 to 3.57 GHz. The measured phase noise is-122.22 dBc/Hz at a 1 MHz offset from the carrier. The maximum power consumption of the core part is 6.16 mW at a 1.8 V power supply.

References:

[1] European Broadcasting Union. ETSI ES 201 980-2005 Digital radio mondiale(DRM); system specification[S]. Switzerland: Joint Technical Committee(JTC)Broadcast of the European Broadcasting Union(EBU), 2005.
[2] European Broadcasting Union. ETSI EN 300 401-2006 Digital audio broadcasting(DAB)to mobile, portable and fixed receivers[S]. Switzerland: Joint Technical Committee(JTC)Broadcast of the European Broadcasting Union(EBU), 2006.
[3] Zhou Jianzheng. Key-technologies research of DRM/DAB receiver RF front-end IC design [D]. Nanjing: School of Information Science and Engineering of Southeast University, 2009.(in Chinese)
[4] Safarian Z, Hashemi H. Wideband multi-mode CMOS VCO design using coupled inductors[J]. IEEE Transactions on Circuits and Systems, 2009, 56(8):1830-1843.
[5] Rael J J, Abidi A A. Physical processes of phase noise in differential LC oscillators[C]//IEEE Custom Integrated Circuits Conference. Orlando, FL, USA, 2000:569-572.
[6] Jia L, Choi Y B, Yeoh W G. A 5.8-GHz VCO with precision gain control[C]//IEEE RFIC Symp Dig. Honolulu, USA, 2007:701-704.
[7] Sung E Y, Lee K S, Baek D H, et al. A wideband 0.18-μm CMOS ∑ fractional-N frequency synthesizer with a single VCO for DVB-T[C]//IEEE Asian Solid-State Circuits Conf Dig. Hsinchu, China, 2005: 193-196.
[8] Shin J W, Kim J S, Kim S S, et al. A wideband fractional-N frequency synthesizer with linearized coarse-tuned VCO for UHF/VHF mobile broadcasting tuners[C]//EEE Asian Solid-State Circuits Conf Dig.Jeju, South Korea, 2007: 440-443.
[9] Moon Young-Jin, Roh Yong-Seong, Jeong Chan-Young, et al. A 4.39-5.26 GHz LC-tank CMOS voltage-controlled oscillator with small VCO-gain variation[J]. IEEE Microwave and Wireless Components Letters, 2009, 19(8): 524-526.

Memo

Memo:

Biographies: Lei Xuemei(1972—), female, graduate, lecturer; Wang Zhigong(corresponding author), male, doctor, professor, zgwang@seu.edu.cn.
Citation: Lei Xuemei, Wang Zhigong, Wang Keping. A wideband low-phase-noise LC VCO for DRM/DAB frequency synthesizer[J].Journal of Southeast University(English Edition), 2010, 26(4):528-531.

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