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An X-band MESFET grid oscillator with gate feedback

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4 Author(s)
Weikle, R.M., II. ; Div. of Eng. & Appl. Sci., California Inst. of Technol., Pasadena, CA, USA ; Kim, M. ; Hacker, J.B. ; Rutledge, D.B.

A design for a quasi-optical MESFET power-combining array that utilizes gate feedback is presented. This circuit is different from previous MESFET grids that utilized packaged devices and source feedback to produce an oscillator at 5 GHz. The present configuration allows the drain and source leads to couple directly to the radiated field. Simulations indicate that this configuration can be used to build a high-frequency oscillator. A transmission-line model for the grid is presented and used to design a 25-element grid for operation at 10 GHz. Measurements show that the grid delivers an effective radiated power of 2.4 W at 10.9 GHz.<>

Published in:

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Date of Conference:

24-28 June 1991