Title :
A 60-GHz IMPATT oscillator array with pulsed operation
Author :
Davidson, Andrew C. ; Wise, Frank W. ; Compton, Richard C.
Author_Institution :
Cornell Univ., Ithaca, NY, USA
fDate :
10/1/1993 12:00:00 AM
Abstract :
Describes the design and operation of a 60-GHz quasi-optical power combining array employing IMPATT diodes in a weakly coupled, hybrid, two-by-four arrangement. Frequency-locked operation of all eight elements has been achieved for CW operation with a total radiated power in excess of 2 W. Approximately 61 W of DC power was required to drive the array. Pulsed operation was investigated as a means of preventing overheating. The locking behavior of these pulsed arrays was characterized. The array was pulsed with a 2-ms-risetime, low-duty-cycle, 4-kHz bias. Under these conditions, single-frequency operation was observed throughout the duration of the pulse, including the turn-on period
Keywords :
IMPATT diodes; active antennas; microstrip antennas; microwave antenna arrays; microwave oscillators; solid-state microwave circuits; waveguide couplers; 2 W; 60 GHz; 60-GHz IMPATT oscillator array; CW operation; active antenna arrays; frequency-locked operation; locking behavior; pulsed operation; quasi-optical power combining array; single-frequency operation; total radiated power; turn-on period; weakly coupled hybrid two-by-four arrangement; Cogeneration; Diodes; Frequency; Heat sinks; Millimeter wave technology; Oscillators; Packaging; Planar arrays; Power generation; Solid state circuits;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
