A polar transmitter using a linear-assisted delta-modulation envelope-amplifier for WCDMA applications

Kazuaki Kunihiro, Kiyohiko Takahashi, Shingo Yamanouchi, Tomohisa Hirayama, Hikaru Hida, Shin Ichi Tanaka

研究成果: Conference contribution

7 引用 (Scopus)

抜粋

A polar transmitter using a new linear-assisted delta-modulation (LADM) envelope-amplifier has been developed for WCDMA applications. The LADM system is composed of a highly efficient switching block based on a 200-MHz-clock delta-modulator, which is implemented in a 0.18-μm CMOS IC, and a highly accurate linear block. In the LADM approach, the residual quantization noise and distortion of switching amplification are removed through the assistant linear process; thus, a sufficiently low ACPR of -45 dBc and a small EVM of 1.7% can be achieved without a pre-distortion technique. The developed polar transmitter nearly doubles the average efficiency in the 10- to 15-dB back-off region of class-AB PAs.

元の言語English
ホスト出版物のタイトルProceedings of the 36th European Microwave Conference, EuMC 2006
出版者IEEE Computer Society
ページ137-140
ページ数4
ISBN(印刷物)2960055160, 9782960055160
DOI
出版物ステータスPublished - 2006 1 1
イベント36th European Microwave Conference, EuMC 2006 - Manchester, United Kingdom
継続期間: 2006 9 102006 9 12

出版物シリーズ

名前Proceedings of the 36th European Microwave Conference, EuMC 2006

Conference

Conference36th European Microwave Conference, EuMC 2006
United Kingdom
Manchester
期間06/9/1006/9/12

    フィンガープリント

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Radiation

これを引用

Kunihiro, K., Takahashi, K., Yamanouchi, S., Hirayama, T., Hida, H., & Tanaka, S. I. (2006). A polar transmitter using a linear-assisted delta-modulation envelope-amplifier for WCDMA applications. : Proceedings of the 36th European Microwave Conference, EuMC 2006 (pp. 137-140). [4057766] (Proceedings of the 36th European Microwave Conference, EuMC 2006). IEEE Computer Society. https://doi.org/10.1109/EUMC.2006.281219