Envelope Modulator Selection for RF Carrier Phase-Burst Transmitters

Author

Pires, Sergio C. ; Cabral, Pedro M. ; Pedro, Jose C.

Author_Institution

DETI, Univ. de Aveiro, Aveiro, Portugal

Volume

24

Issue

9

fYear

2014

fDate

Sept. 2014

Firstpage

643

Lastpage

645

Abstract

This letter analyzes the performance of RF carrier phase-burst transmitters, implemented with a single-ended switched-mode power amplifier. Using a practical prototype and its corresponding theoretical operation model, the efficiency and linearity was measured and discussed for different envelope modulators. This theoretical analysis and its experimental validation led to the conclusion that optimized efficiency and linearity are obtained when envelope modulators of lower switching frequencies are used.

Keywords

modulators; optimisation; power amplifiers; radio transmitters; RF carrier phase-burst transmitter; SMPA; efficiency measurement; efficiency optimization; envelope modulator selection; linearity measurement; linearity optimization; switched mode power amplifier; Band-pass filters; Linearity; Phase modulation; Radio frequency; Transistors; Transmitters; Carrier-burst transmitter; phase modulation; power amplifier (PA); pulse-width modulator (PWM); sigma-delta modulator; switched-mode power amplifier (SMPA);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2014.2330499

Filename

6851205