Impact of small antenna on linear power amplifier performance in a co-design approach

Author

Ben Abdallah, Essia ; Giry, Alexandre ; Bories, Serge ; Nicolas, Dominique ; DELAVEAUD, christophe

Author_Institution

LETI, Univ. Grenoble-Alpes, Grenoble, France

fYear

2015

fDate

7-10 June 2015

Firstpage

1

Lastpage

4

Abstract

The main objective of this study is to determine the impact of a co-designed small antenna on linear power amplifier (PA) performances. Special attention is paid to load-pull optimization to derive suitable values of the antenna input impedance at the operating frequency and the first higher-order harmonics. The impact of the antenna impedance profile in the operational band on PA performance is also addressed. It is found that the PA is more linear, when its operating frequency is below the antenna resonance, compared to other configurations. A microstrip patch antenna which provide the optimal impedance is developed and results demonstrate the benefits of the co-design approach with new antenna.

Keywords

microstrip antennas; optimisation; radiofrequency power amplifiers; PA performances; antenna impedance profile; antenna input impedance; antenna resonance; higher-order harmonics; linear power amplifier; load-pull optimization; microstrip patch antenna; optimal impedance; Bandwidth; Harmonic analysis; Impedance; Microwave antennas; Power amplifiers; Resonant frequency; co-design; impedance; load-pull; power amplifier; small antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International

Conference_Location

Grenoble

Type

conf

DOI

10.1109/NEWCAS.2015.7181998

Filename

7181998