J. Semicond. > 2012, Volume 33 > Issue 12 > 125002
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SEMICONDUCTOR INTEGRATED CIRCUITS

A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications

Jia Fei, Diao Shengxi, Zhang Xuejuan, Fu Zhongqian and Lin Fujiang

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DOI: 10.1088/1674-4926/33/12/125002

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Abstract: This paper presents a single chip CMOS power amplifier with neutralization capacitors for ZigbeeTM system according to IEEE 802.15.4. A novel structure with digital interface is adopted, which allows the output power of a PA to be controlled by baseband signal directly, so there is no need for DAC. The neutralization capacitors will increase reverse isolation. The chip is implemented in SMIC 0.18 μm CMOS technology. Measurement shows that the proposed power amplifier has a 13.5 dB power gain, 3.48 dBm output power and 35.1% PAE at P 1dB point. The core area is 0.73 × 0.55 mm2.

Key words: power amplifier

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    Received: 20 August 2015 Revised: 02 July 2012 Online: Published: 01 December 2012

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      Article Navigation >  Journal of Semiconductors  > 2012  >  33(12): 125002
      Jia Fei, Diao Shengxi, Zhang Xuejuan, Fu Zhongqian, Lin Fujiang. A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications[J]. Journal of Semiconductors, 2012, 33(12): 125002. doi: 10.1088/1674-4926/33/12/125002 ****Jia F, Diao S X, Zhang X J, Fu Z Q, Lin F J. A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications[J]. J. Semicond., 2012, 33(12): 125002. doi: 10.1088/1674-4926/33/12/125002.
      Citation:
      Jia Fei, Diao Shengxi, Zhang Xuejuan, Fu Zhongqian, Lin Fujiang. A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications[J]. Journal of Semiconductors, 2012, 33(12): 125002. doi: 10.1088/1674-4926/33/12/125002 ****
      Jia F, Diao S X, Zhang X J, Fu Z Q, Lin F J. A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications[J]. J. Semicond., 2012, 33(12): 125002. doi: 10.1088/1674-4926/33/12/125002.
      shu

      A digitally controlled power amplifier with neutralization capacitors for ZigbeeTM applications

      DOI: 10.1088/1674-4926/33/12/125002

      • Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, China

      • Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, China

      • Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, China

      • Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, China

      • Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230027, China

      • Received Date: 2015-08-20
      • Accepted Date: 2012-04-07
      • Revised Date: 2012-07-02
      • Published Date: 2012-11-13

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