Measurement of a planar 9-way metamaterial power combined amplifier

Author

Wei-Chiang Lee ; Tah-Hsiung Chu

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

600

Lastpage

602

Abstract

In this paper, a planar 9-way metamaterial power combined amplifier is presented. The power divider/combiner structure is a metamaterial lens composed of positive refractive index (PRI) material with right-handed unit cells and zero refractive index (ZRI) material with left-handed unit cells. A semi-circular interface is between PRI and ZRI materials. Due to its uniform isolation characteristics of the power divider/combiner, the graceful degradation performance of this power combined amplifier is shown to be independent of the amplifier failure sequence. The power combining of nine 1 W amplifiers gives an output power of 7.64 W with a combining efficiency of 85% at 1.008 GHz, and the graceful degradation characteristic of this power combined amplifier is experimentally demonstrated.

Keywords

UHF power amplifiers; microwave metamaterials; power combiners; power dividers; refractive index; amplifier failure sequence; combining efficiency; degradation performance; efficiency 85 percent; frequency 1.008 GHz; left-handed unit cells; planar 9-way metamaterial power combined amplifier; positive refractive index material; power 7.64 W; power divider-combiner structure; right-handed unit cells; semicircular interface; zero refractive index material; Degradation; Metamaterials; Microwave amplifiers; Power amplifiers; Power dividers; Power generation; Metamaterials; microwave circuits; power amplifiers; power combiners; power dividers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6694877

Filename

6694877