Phase error free linc modulator

S. Tomisato, K. Chiba, K. Murota

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A new technique for linear amplification with nonlinear components (LINC) is described. LINC implementation is thought to be very difficult because of its sensitivity to phase error caused by the difference in electrical length between two power amplifier branches. The allowable limit of phase error for achieving the 60 dB suppression of the adjacent channel interference (ACI) power is estimated for roll-off bandlimited offset QPSK (OQPSK). Then, a compensating method for this phase error is presented. By using the proposed method, sufficient out-of-band spectrum suppression for mobile radio application is obtained. An output power of 7.5 W and a power efficiency of 21% are experimentally confirmed.

Original languageEnglish
Pages (from-to)576-577
Number of pages2
JournalElectronics Letters
Volume25
Issue number9
DOIs
Publication statusPublished - Jan 1 1989
Externally publishedYes

Keywords

  • Amplifiers
  • Errors
  • Mobile radio systems
  • Modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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