1.2-V operation power pseudomorphic high electron mobility transistor for personal handy phone handset application

Edward Yi Chang, Di Houng Lee, Szu Hung Chen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A 1.2 V GaAs power pseudomorphic high electron mobility transistors (PHEMT's) for personal handy phone system (PHS) handset application was developed. The power PHEMT has a dual delta doped AlGaAs/InGaAs/GaAs based structure with compact device layout. The 6.72 mm device exhibits maximum power added efficiency (PAE) of 43.62% at 1.2 V drain bias with an output power of 22.18 dBm. Under 1.9 GHz π/4-shifted quadrature phase shift keying (QPSK) modulated PHS signal, the device shows an adjacent channel leakage power (Padj) of -56.86 dBc at 600 kHz apart from the center frequency and a linear efficiency of 41.31%. This is the first report on the 1.2-V operation power PHEMT for PHS handset application so far.

Original languageEnglish
Pages (from-to)L1019-L1022
JournalJapanese journal of applied physics
Volume39
Issue number10 B
DOIs
StatePublished - 15 Oct 2000

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