Improved EER transmitters for WLAN

T Nesimoglu, KA Morris, SC Parker, JP McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

5 Citations (Scopus)
234 Downloads (Pure)


The envelope elimination and restoration (EER) transmitter architecture is capable of providing high power efficiency without compromising linearity. This paper shows that for a wireless local area network (WLAN) application, the envelope reconstruction process modulates the supply voltage of the switching amplifier over a large dynamic range. This introduces sufficient nonlinearity to violate emission specifications. Fortunately, the EER architecture can be improved by applying envelope and phase feedback. The phase feedback architecture satisfies the emission specifications of IEEE 802.11a, while envelope feedback provides modest adjacent channel power ratio (ACPR) improvement. The impact of clipping on the ACPR and error vector magnitude (EVM) is also investigated. It is shown that for a WLAN application, a clipping of only 1 dB can be tolerated before the output signal is degraded significantly
Translated title of the contributionImproved EER Transmitters for WLAN
Original languageEnglish
Title of host publicationRAWCON 2006 San Diego
Place of PublicationInstitute of Electrical and Electronics Engineers (IEEE)
Pages239 - 242
Publication statusPublished - Jan 2006
EventIEEE Radio and Wireless Symposium (RAWCON) - San Diego, United States
Duration: 1 Jan 2006 → …


ConferenceIEEE Radio and Wireless Symposium (RAWCON)
CountryUnited States
CitySan Diego
Period1/01/06 → …

Bibliographical note

Conference Organiser: IEEE
Rose publication type: Conference contribution

Terms of use: Copyright © 2006 IEEE. Reprinted from IEEE Radio and Wireless Symposium (RAWCON 2006).

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  • non linear distortion
  • power amplifiers


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