Quasioptical MESFET VCOs

Scott Bundy; Tom Mader; Zoya Popovic; Reinold Ellinson; Dag Roar Hjelme; Marc R. Surette; Michael J. Yadlowsky; Alan Rolf Mickelson

doi:10.1117/12.44511

1 July 1991 Quasioptical MESFET VCOs

Scott Bundy, Tom Mader, Zoya Popovic, Reinold Ellinson, Dag Roar Hjelme, Marc R. Surette, Michael J. Yadlowsky, Alan Rolf Mickelson

Author Affiliations +

Proceedings Volume 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems; (1991) https://doi.org/10.1117/12.44511
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

A gate feedback oscillator is presented which is motivated by the geometry of the monolithic MESFET device, with a monolithically integrated oscillator in GaAs. This power combining, solid state oscillator can be used as a microwave and millimeter wave source, and in most applications it needs to be tunable in both power and frequency. The tuning can be performed with a separate wafer loaded with varactor diodes, that has an electrically variable reflection coefficient, and is equivalent to a tuning short. Phase control is carried out using optical injection-locking. A single MESFET microstrip oscillator is demonstrated that is optically injection locked at 5 GHz. To characterize the nonlinearity of the device, electrooptic sampling of the gate-source voltage has been performed inside the GaAs FET in a microstrip oscillator and the saturation level has been determined at different bias points.

Citation Download Citation

Scott Bundy, Tom Mader, Zoya Popovic, Reinold Ellinson, Dag Roar Hjelme, Marc R. Surette, Michael J. Yadlowsky, and Alan Rolf Mickelson "Quasioptical MESFET VCOs", Proc. SPIE 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems, (1 July 1991); https://doi.org/10.1117/12.44511

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available