Title :
A 16-element subarray for hybrid-circuit tile-approach spatial power combining
Author :
Gouker, Mark A. ; Delisle, John T. ; Duffy, Sean M.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
11/1/1996 12:00:00 AM
Abstract :
Three designs for a 4-by-4 subarray are described for use in a spatial power-combined transmitter. The subarrays are constructed using a hybrid-circuit, tile-approach architecture and are composed of 16 cavity-backed, proximity-coupled microstrip antennas, each fed by a 0.5 watt amplifier. Both linearly and circularly polarized subarrays have been constructed for operation over a 10% band centered at 10 GHz. The linearly polarized subarray showed the following peak performance: EIRP greater than 27 dBW, effective transmitter power greater than 5 watts, DC-RF efficiency greater than 20%, and excellent graceful degradation performance
Keywords :
MMIC; antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; power combiners; printed circuits; radio transmitters; 0.5 W; 10 GHz; 16-element subarray; 20 percent; 5 W; MMIC amplifier fed antennas; SHF spatial power combining; cavity-backed microstrip antennas; circularly polarized subarrays; hybrid-circuit tile-approach; linearly polarized subarrays; proximity-coupled microstrip antennas; spatial power-combined transmitter; Circuits; Degradation; Feeds; MMICs; Microstrip antennas; Optical amplifiers; Optical transmitters; Polarization; Radio frequency; Radiofrequency amplifiers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
