ETRI Journal

  • 제32권2호
  • /
  • Pages.327-329
  • /
  • 2010
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Ultra-small Form-Factor Helix on Pad-Type Stage-Bypass WCDMA Tx Power Amplifier Using a Chip-Stacking Technique and a Multilayer Substrate

  • Yoo, Chang-Hyun (School of Electrical Engineering and Computer Science, Hanyang University) ;
  • Kim, Jung-Hyun (School of Electrical Engineering and Computer Science, Hanyang University)
  • 투고 : 2009.11.30
  • 심사 : 2010.01.22
  • 발행 : 2010.04.30
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초록

A fully integrated small form-factor HBT power amplifier (PA) was developed for UMTS Tx applications. For practical use, the PA was implemented with a well configured bottom dimension, and a CMOS control IC was added to enable/disable the HBT PA. By using helix-on-pad integrated passive device output matching, a chip-stacking technique in the assembly of the CMOS IC, and embedding of the bulky inductive lines in a multilayer substrate, the module size was greatly reduced to 2 mm ${\times}$ 2.2 mm. A stage-bypass technique was used to enhance the efficiency of the PA. The PA showed a low idle current of about 20 mA and a PAE of about15% at an output power of 16 dBm, while showing good linearity over the entire operating power range.

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참고문헌

  1. G. Hau et al., "A $3{\times}3$ $mm^{2}$ Embedded-Wafer-Level Packaged WCDMA GaAs HBT Power Amplifier Module with Integrated Si DC Power Management IC," IEEE RFIC Symp. Digest, June 2008, pp. 409-412.
  2. C. Yoo et al., "A 2 mm $\times$ 2 mm HoP-type Power Amplifier for W-CDMA Handset Applications," IEEE Topical Symp. Power Amplifiers for Wireless Commun., Jan. 2009.
  3. C. Yoo et al., "Helix on Pad-Type Ultra Small-Size Power Amplifiers for WCDMA Handset Applications," IEEE Microw. Wireless Compon. Lett., vol. 19, no. 12, Dec. 2009, pp. 825-827. https://doi.org/10.1109/LMWC.2009.2033530
  4. U. Kim, J. Kim, and Y. Kwon, "A Highly Efficient GaAs HBT MMIC Balanced Power Amplifier for W-CDMA Handset Applications," ETRI J., vol. 30, no. 5, Oct. 2009, pp. 598-600.
  5. J. Kim et al., "High Efficiency Power Amplifier with Multiple Power Modes," US Patent 6,900,692, May 31, 2005.

피인용 문헌

  1. Analysis and Design of Helix-on-Pads for Miniaturized Mobile Applications vol.64, pp.12, 2010, https://doi.org/10.1109/tmtt.2016.2613540