A 100-MESFET planar grid oscillator

Zoya B. Popovic, Robert M. Weikle, Moonil Kim, David B. Rutledge

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

A 100-MESFET oscillator which gives 21 W of CW effective radiated power (ERP) with a 16-dB directivity and a 20% DC-to-RF conversion efficiency at 5 GHz is presented. The oscillator is a planar grid structure periodically loaded with transistors. The grid radiates and the devices combine quasi-optically and lock to each other. The oscillator can also be quasi-optically injection-locked to an external signal. The planar grid structure is very simple. All of the devices share the same bias, and they can be power and frequency tuned with a mirror behind the grid or dielectric slabs in front of it. An equivalent circuit for an infinite grid predicts the mirror frequency tuning. The planar property of the oscillator offers the possibility of a wafer-scale monolithically integrated source. Thousands of active solid-state devices can potentially be integrated in a high-power source for microwave or millimeter-wave applications.

Original languageEnglish
Pages (from-to)193-200
Number of pages8
JournalIEEE Transactions on Microwave Theory and Techniques
Volume39
Issue number2
DOIs
Publication statusPublished - 1991 Feb 1
Externally publishedYes

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Mirrors
field effect transistors
grids
oscillators
Solid state devices
Millimeter waves
Equivalent circuits
Conversion efficiency
Transistors
Tuning
Microwaves
mirrors
solid state devices
directivity
equivalent circuits
millimeter waves
slabs
transistors
direct current
tuning

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

A 100-MESFET planar grid oscillator. / Popovic, Zoya B.; Weikle, Robert M.; Kim, Moonil; Rutledge, David B.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 39, No. 2, 01.02.1991, p. 193-200.

Research output: Contribution to journalArticle

Popovic, Zoya B. ; Weikle, Robert M. ; Kim, Moonil ; Rutledge, David B. / A 100-MESFET planar grid oscillator. In: IEEE Transactions on Microwave Theory and Techniques. 1991 ; Vol. 39, No. 2. pp. 193-200.
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