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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2017-07-26
A 6.6 GHz Quadrature Frequency Synthesizer with -78 Dbc Reference Spur for UWB Application
By
Minghua Wang,

    Dr. Minghua Wang

    Institute of Microelectronics, Chinese Academy of Sciences

    China

    Homepage

Xiaosong Wang,

    Dr. Xiaosong Wang

    Beijing Key Laboratory of Radio Frequency IC Technology for Next Generation Communications

    Institute of Microelectronics of Chinese Academy of Sciences

    China

    Homepage

Yu Liu,

    Dr. Yu Liu

    Institute of Microelectronics, Chinese Academy of Sciences

    China

    Homepage

Haiying Zhang

    Dr. Haiying Zhang

    Department of MMICs and Compound Semiconductor Devices

    Institute of Microelectronics, Chinese Academy Science

    China

    Homepage

Progress In Electromagnetics Research C, Vol. 76, 63-73, 2017
doi:10.2528/PIERC17032301 | Google Scholar

Abstract
An integer-N quadrature frequency synthesizer for single-band UWB application was designed in 0.18 μm CMOS technology. A modified bottom-series quadrature voltage-controlled oscillator (QVCO) based on reconfigurable LC tank is employed to provide quadrature signals and cover a range from 6.48 GHz to 7.07 GHz. In order to suppress the reference spur levels, an improved charge-averaging charge pump and a highly linear phase-frequency detector (PFD) are used. From the carrier of 6.6 GHz, the measured reference spur is -78.2 dBc, and the measured phase noise is -115.4 dBc/Hz at 1MHz offset. The frequency synthesizer including buffers consumes a total power of 99 mW from a 1.8 V power supply. Chip size is 1.6 mm×0.9 mm.
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Citation
Minghua Wang, Xiaosong Wang, Yu Liu, and Haiying Zhang, "A 6.6 GHz Quadrature Frequency Synthesizer with -78 Dbc Reference Spur for UWB Application," Progress In Electromagnetics Research C, Vol. 76, 63-73, 2017.
doi:10.2528/PIERC17032301
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