Skip to main content Accessibility help
×
Home
Hostname: page-component-5c569c448b-phmbd Total loading time: 0.181 Render date: 2022-07-04T04:03:11.051Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true } hasContentIssue true

Digital PA with voltage-mode topology using envelope delta-sigma modulation

Published online by Cambridge University Press:  09 July 2013

Andreas Wentzel*
Affiliation:
Ferdinand-Braun-Institut (FBH), Leibniz-Institut für Hoechstfrequenztechnik, 12489 Berlin, Germany. Phone: +49 30 6392 2627
Shinichi Hori
Affiliation:
NEC Corporation, Kawasaki, Kanagawa 211-8666, Japan
Makoto Hayakawa
Affiliation:
NEC Corporation, Kawasaki, Kanagawa 211-8666, Japan
Kazuaki Kunihiro
Affiliation:
NEC Corporation, Kawasaki, Kanagawa 211-8666, Japan
Wolfgang Heinrich
Affiliation:
Ferdinand-Braun-Institut (FBH), Leibniz-Institut für Hoechstfrequenztechnik, 12489 Berlin, Germany. Phone: +49 30 6392 2627
*
Corresponding author: A. Wentzel Email: andreas.wentzel@fbh-berlin.de

Abstract

This paper reports on digital transmitter architecture for the 450 MHz band using an envelope delta-sigma modulator realized in CMOS and a voltage-mode class-S (VMCS) power amplifier (PA) based on GaN monolithic microwave integrated circuits (MMICs). The class-S PA is characterized for narrowband single-tone signals and a single- as well as a four-carrier downlink wideband code division multiple access (WCDMA) signal with a peak-to-average power ratio of 7.5 dB. Using single-tone excitation the PA shows a maximum drain efficiency of 86% and a peak output power of 4.4 W. At 6 and 10 dB back-off, 59 and 36% efficiency are achieved, respectively. With the single- and four-carrier WCDMA input signals maximum drain efficiencies of 64 and 53% are reached, respectively, and peak output power is 0.7 W. The adjacent channel leakage ratio shows values of about −34 dBc (5 MHz) and −38 dBc (10 MHz) for single-carrier WCDMA excitation. This is the first complete VMCS PA chain characterized with standard communication signals.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1]Fischer, G.: Next-generation base-station radio frequency architecture. Bell Labs Tech. J., 12 (2) (2007), 318, Alcatel-Lucent.CrossRefGoogle Scholar
[2]Shi, K. et al. : A compact 65 W 1.7–2.3 GHz class-E GaN power amplifier for base stations, in Proc. 6th European Microwave Integrated Circuit Conf. 2011, pp. 542545.Google Scholar
[3]Raab, F.H.: Maximum efficiency and output of class-F power amplifier. IEEE Trans. Microw. Theory Tech., 49 (6) (2001), 11621166.CrossRefGoogle Scholar
[4]Kim, J.H. et al. : A saturated doherty power amplifier based on saturated amplifier. IEEE Microw. Wirel. Compon. Lett., 20 (2) (2010), 109111.CrossRefGoogle Scholar
[5]Moon, J. et al. : Doherty amplifier with envelope tracking for high efficiency, in IEEE MTT-S Int. Microwave Symp. Digest 2010, pp. 10861089.Google Scholar
[6]Godoy, P.A. et al. : A highly efficient 1.95-GHz, 18-W asymmetric multilevel outphasing transmitter for wideband applications, in IEEE MTT-S Int. Microwave Symp. Digest 2011, WE2D-5.Google Scholar
[7]Kim, J.H. et al. : 60% high-efficiency 3 G LTE power amplifier with three-level delta sigma modulation assisted by dual supply injection, in IEEE MTT-S Int. Microwave Symp. Digest 2011, TH2G-5.Google Scholar
[8]Dupuy, A. et al. : High efficiency power transmitter based on envelope delta-sigma modulation (EDSM). IEEE Veh. Technol. Conf., 3 (2004), 20922095.Google Scholar
[9]Wentzel, A.; Meliani, C.; Heinrich, W.: RF class-S power amplifiers: state-of-the-art results and potential, in IEEE MTT-S Int. Microwave Symp. Digest 2010, pp. 812815.Google Scholar
[10]Wentzel, A.; Meliani, C.; Heinrich, W.: Optimized coding scheme for class-S amplifiers, in Proc. 41st European Microwave Conf. 2011, pp. 329332.Google Scholar
[11]Hung, T.-P. et al. : H-bridge class-D power amplifiers for digital pulse modulation transmitters, in IEEE MTT-S Int. Microwave Symp. Digest 2007, pp. 10911094.Google Scholar
[12]Maier, S. et al. : 900 MHz pulse-width-modulated class-S power amplifier with improved linearity, in IEEE MTT-S Int. Microwave Symp. Digest 2011, WE2D-1.Google Scholar
[13]Hori, S. et al. : A 0.7–3 GHz envelope ΔΣ modulator using phase modulated carrier clock for multi-mode/band switching amplifiers, in IEEE Radio Frequency Integrated Circuits Symp. (RFIC) 2011, pp. 3538.Google Scholar
[14]Frappe, A. et al. : An all-digital RF signal generator using high-speed ΔΣ modulators. IEEE J. Solid-State Circuits, 44 (10) (2009), 27222732.CrossRefGoogle Scholar
[15]Hori, S. et al. : A watt-class digital transmitter with a voltage-mode class-S power amplifier and an envelope ΔΣ-modulator for 450 MHz band, in Proc. IEEE Compound Semiconductor Integrated Circuit Symp. (CSICS) 2012, La Jolla, USA, pp. 134137.Google Scholar
[16]Angelov, I. et al. : On the large-signal modeling of Al-GaN/GaN HEMTs and SiC MESFETs, in Proc. 13th GAAS Symp. Paris, 2005, pp. 309312.Google Scholar
2
Cited by

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Digital PA with voltage-mode topology using envelope delta-sigma modulation
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Digital PA with voltage-mode topology using envelope delta-sigma modulation
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Digital PA with voltage-mode topology using envelope delta-sigma modulation
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *