J. Semicond. > 2010, Volume 31 > Issue 7 > 075001

SEMICONDUCTOR INTEGRATED CIRCUITS

A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB

Chen Pufeng, Li Zhiqiang, Wang Xiaosong, Zhang Haiying and Ye Tianchun

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DOI: 10.1088/1674-4926/31/7/075001

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Abstract: An ultra-wideband frequency synthesizer is designed to generate carrier frequencies for 5 bands distributed from 6 to 9 GHz with less than 3 ns switching time. It incorporates two phase-locked loops and one single-sideband (SSB) mixer. A 2-to-1 multiplexer with high linearity is proposed. A modified wideband SSB mixer, quadrature VCO, and layout techniques are also employed. The synthesizer is fabricated in a 0.18 μm CMOS process and operates at 1.5-1.8 V while consuming 40 mA current. The measured phase noise is -128 dBc/Hz at 10 MHz offset, and the sideband rejection is -22 dBc at 7.656 GHz.

Key words: 6--9-GHzfrequency synthesizerPLLMB-OFDMUWBCMOS

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    Received: 18 August 2015 Revised: 23 March 2010 Online: Published: 01 July 2010

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      Chen Pufeng, Li Zhiqiang, Wang Xiaosong, Zhang Haiying, Ye Tianchun. A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB[J]. Journal of Semiconductors, 2010, 31(7): 075001. doi: 10.1088/1674-4926/31/7/075001 ****Chen P F, Li Z Q, Wang X S, Zhang H Y, Ye T C. A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB[J]. J. Semicond., 2010, 31(7): 075001. doi:  10.1088/1674-4926/31/7/075001.
      Citation:
      Chen Pufeng, Li Zhiqiang, Wang Xiaosong, Zhang Haiying, Ye Tianchun. A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB[J]. Journal of Semiconductors, 2010, 31(7): 075001. doi: 10.1088/1674-4926/31/7/075001 ****
      Chen P F, Li Z Q, Wang X S, Zhang H Y, Ye T C. A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB[J]. J. Semicond., 2010, 31(7): 075001. doi:  10.1088/1674-4926/31/7/075001.

      A 6-9 GHz 5-band CMOS synthesizer for MB-OFDM UWB

      DOI: 10.1088/1674-4926/31/7/075001
      • Received Date: 2015-08-18
      • Accepted Date: 2009-11-11
      • Revised Date: 2010-03-23
      • Published Date: 2010-07-05

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