Investigation of various envelope complexity linearity under modulated stimulus using a new envelope formulation approach

F. L. Ogboi, P. J. Tasker, M. Akmal, J. Lees, J. Benedikt, S. Bensmida, K. Morris, M. Beach, J. McGeehan

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

1 Citation (Scopus)

Abstract

In [1] a new formulation for quantifying the linearizing baseband voltage signal, injected at the output bias port, to linearize a device behaviour was introduced. A key feature of this approach is that since it is formulated in the envelope domain the number of linearization coefficient required is independent of the envelope shape, complexity. This property is validated by performing baseband linearization investigations on a 10W Cree GaN HEMT device. Modulated signals with increasing complexity 3, 5, and 9-tone modulated stimulus, at 1.5dB of compression, were utilized. In all cases just two-linearization coefficients needed to be determined in order to compute the output baseband signal envelope necessary. Intermodulation distortion was reduced to around -50dBc, a value very close to the dynamic range limit of the measurement system.

Original languageEnglish
Title of host publicationTechnical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781479936229
DOIs
Publication statusPublished - 5 Dec 2014
Event36th IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2014 - San Diego, United States
Duration: 19 Oct 201422 Oct 2014

Conference

Conference36th IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2014
CountryUnited States
CitySan Diego
Period19/10/1422/10/14

Keywords

  • Distortion
  • Envelope
  • Modulation
  • Power amplifiers
  • Waveform engineering

Fingerprint Dive into the research topics of 'Investigation of various envelope complexity linearity under modulated stimulus using a new envelope formulation approach'. Together they form a unique fingerprint.

Cite this