A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS

Kunhee Cho; Ranjit Gharpurey

doi:10.1109/RFIC.2015.7337724

A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS

Kunhee Cho
, Ranjit Gharpurey

University of Texas at Austin

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

10 Scopus citations

Abstract

A wireless transmitter using RF pulse-width-modulation (PWM) with carrier switching is introduced. The proposed approach overcomes the dynamic range limitation of PWM at radio frequencies by utilizing carrier switching between fundamental and half-fundamental frequencies, depending on the signal level to be transmitted. This allows for transmission of signals with large peak-to-average power ratio (PAPR) such as OFDM. The efficiency is also improved in the power back-off region due to reduced switching losses in the half-fundamental mode. The transmitter has been implemented in a 130-nm CMOS process. The measured peak output power and power-added-efficiency (PAE) are 25.6 dBm and 34%, respectively. While driving 802.11g 64-QAM OFDM signals, the average output power is 18.3 dBm and the PAE is 16% with an EVM of -25.5 dB.

Original language	English
Title of host publication	Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015
Editors	Domine Leenaerts
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	139-142
Number of pages	4
ISBN (Electronic)	9781479976416
DOIs	https://doi.org/10.1109/RFIC.2015.7337724
State	Published - 25 Nov 2015
Externally published	Yes
Event	IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015 - Phoenix, United States Duration: 17 May 2015 → 19 May 2015

Publication series

Name	Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume	2015-November
ISSN (Print)	1529-2517

Conference

Conference	IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015
Country/Territory	United States
City	Phoenix
Period	17/05/15 → 19/05/15

Keywords

carrier switching
class-D PA
CMOS power amplifier
RF-PWM
switching PA
wireless transmitter
WLAN

Access to Document

10.1109/RFIC.2015.7337724

Cite this

Cho, K., & Gharpurey, R. (2015). A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS. In D. Leenaerts (Ed.), Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015 (pp. 139-142). Article 7337724 (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium; Vol. 2015-November). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RFIC.2015.7337724

Cho, Kunhee ; Gharpurey, Ranjit. / A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS. Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015. editor / Domine Leenaerts. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 139-142 (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium).

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title = "A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS",

abstract = "A wireless transmitter using RF pulse-width-modulation (PWM) with carrier switching is introduced. The proposed approach overcomes the dynamic range limitation of PWM at radio frequencies by utilizing carrier switching between fundamental and half-fundamental frequencies, depending on the signal level to be transmitted. This allows for transmission of signals with large peak-to-average power ratio (PAPR) such as OFDM. The efficiency is also improved in the power back-off region due to reduced switching losses in the half-fundamental mode. The transmitter has been implemented in a 130-nm CMOS process. The measured peak output power and power-added-efficiency (PAE) are 25.6 dBm and 34\%, respectively. While driving 802.11g 64-QAM OFDM signals, the average output power is 18.3 dBm and the PAE is 16\% with an EVM of -25.5 dB.",

keywords = "carrier switching, class-D PA, CMOS power amplifier, RF-PWM, switching PA, wireless transmitter, WLAN",

author = "Kunhee Cho and Ranjit Gharpurey",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015 ; Conference date: 17-05-2015 Through 19-05-2015",

year = "2015",

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doi = "10.1109/RFIC.2015.7337724",

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Cho, K & Gharpurey, R 2015, A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS. in D Leenaerts (ed.), Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015., 7337724, Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium, vol. 2015-November, Institute of Electrical and Electronics Engineers Inc., pp. 139-142, IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015, Phoenix, United States, 17/05/15. https://doi.org/10.1109/RFIC.2015.7337724

A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS. / Cho, Kunhee; Gharpurey, Ranjit.
Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015. ed. / Domine Leenaerts. Institute of Electrical and Electronics Engineers Inc., 2015. p. 139-142 7337724 (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium; Vol. 2015-November).

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

TY - GEN

T1 - A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS

AU - Cho, Kunhee

AU - Gharpurey, Ranjit

PY - 2015/11/25

Y1 - 2015/11/25

N2 - A wireless transmitter using RF pulse-width-modulation (PWM) with carrier switching is introduced. The proposed approach overcomes the dynamic range limitation of PWM at radio frequencies by utilizing carrier switching between fundamental and half-fundamental frequencies, depending on the signal level to be transmitted. This allows for transmission of signals with large peak-to-average power ratio (PAPR) such as OFDM. The efficiency is also improved in the power back-off region due to reduced switching losses in the half-fundamental mode. The transmitter has been implemented in a 130-nm CMOS process. The measured peak output power and power-added-efficiency (PAE) are 25.6 dBm and 34%, respectively. While driving 802.11g 64-QAM OFDM signals, the average output power is 18.3 dBm and the PAE is 16% with an EVM of -25.5 dB.

AB - A wireless transmitter using RF pulse-width-modulation (PWM) with carrier switching is introduced. The proposed approach overcomes the dynamic range limitation of PWM at radio frequencies by utilizing carrier switching between fundamental and half-fundamental frequencies, depending on the signal level to be transmitted. This allows for transmission of signals with large peak-to-average power ratio (PAPR) such as OFDM. The efficiency is also improved in the power back-off region due to reduced switching losses in the half-fundamental mode. The transmitter has been implemented in a 130-nm CMOS process. The measured peak output power and power-added-efficiency (PAE) are 25.6 dBm and 34%, respectively. While driving 802.11g 64-QAM OFDM signals, the average output power is 18.3 dBm and the PAE is 16% with an EVM of -25.5 dB.

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KW - class-D PA

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KW - switching PA

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KW - WLAN

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ER -

Cho K, Gharpurey R. A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS. In Leenaerts D, editor, Proceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. 139-142. 7337724. (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium). doi: 10.1109/RFIC.2015.7337724

A 25.6 dBm wireless transmitter using RF-PWM with carrier switching in 130-nm CMOS

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Keywords

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