A 2.5 GHz High Efficiency High Power Low Phase Noise Monolithic Microwave Power Oscillator

Hong Yeh Chang, Chi Hsien Lin, Yu Cheng Liu, Wen Ping Li, Yu Chi Wang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This letter presents a 2.5 GHz high efficiency high power low phase noise monolithic microwave power oscillator using 0.5-μ m GaAs enhancement-and depletion-mode pseudomorphic high-electron mobility transistor process. The class-E load network with finite dc-feed inductance is adopted in the power oscillators to achieve high efficiency. The shunt capacitance and load resistance of the class-E network can be larger than those of the class-E load network with the large dc-feed inductance. With a dc supply voltage of 4 V, the proposed power oscillator demonstrates a peak efficiency of 53%, a maximum output power of 24.8 dBm, and a minimum phase noise of-127 dBc/Hz at 1 MHz offset frequency.

Original languageEnglish
Article number7283678
Pages (from-to)730-732
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume25
Issue number11
DOIs
StatePublished - Nov 2015

Keywords

  • GaAs
  • high efficiency power amplifiers
  • low phase noise oscillators
  • MMIC
  • pHEMT

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