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

doi:10.1109/EUMC.2006.281219

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	Proceedings of the 36th European Microwave Conference, EuMC 2006
Publisher	IEEE Computer Society
Pages	137-140
Number of pages	4
ISBN (Print)	2960055160, 9782960055160
DOIs	https://doi.org/10.1109/EUMC.2006.281219
Publication status	Published - 2006 Jan 1
Event	36th European Microwave Conference, EuMC 2006 - Manchester, United Kingdom Duration: 2006 Sep 10 → 2006 Sep 12

Publication series

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

Conference

Conference	36th European Microwave Conference, EuMC 2006
Country	United Kingdom
City	Manchester
Period	06/9/10 → 06/9/12

Fingerprint

Keywords

CMOS
Code division multiple access (CDMA)
Delta modulation
Polar transmitter
Power amplifiers

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics
Radiation

Cite this

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. In 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

A polar transmitter using a linear-assisted delta-modulation envelope-amplifier for WCDMA applications. / Kunihiro, Kazuaki; Takahashi, Kiyohiko; Yamanouchi, Shingo; Hirayama, Tomohisa; Hida, Hikaru; Tanaka, Shin Ichi.

Proceedings of the 36th European Microwave Conference, EuMC 2006. IEEE Computer Society, 2006. p. 137-140 4057766 (Proceedings of the 36th European Microwave Conference, EuMC 2006).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kunihiro, K, Takahashi, K, Yamanouchi, S, Hirayama, T, Hida, H & Tanaka, SI 2006, A polar transmitter using a linear-assisted delta-modulation envelope-amplifier for WCDMA applications. in Proceedings of the 36th European Microwave Conference, EuMC 2006., 4057766, Proceedings of the 36th European Microwave Conference, EuMC 2006, IEEE Computer Society, pp. 137-140, 36th European Microwave Conference, EuMC 2006, Manchester, United Kingdom, 06/9/10. https://doi.org/10.1109/EUMC.2006.281219

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

Kunihiro, Kazuaki ; Takahashi, Kiyohiko ; Yamanouchi, Shingo ; Hirayama, Tomohisa ; Hida, Hikaru ; Tanaka, Shin Ichi. / A polar transmitter using a linear-assisted delta-modulation envelope-amplifier for WCDMA applications. Proceedings of the 36th European Microwave Conference, EuMC 2006. IEEE Computer Society, 2006. pp. 137-140 (Proceedings of the 36th European Microwave Conference, EuMC 2006).

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Access to Document

10.1109/EUMC.2006.281219