Title :
Reduction of substrate-mode effects in power-combining arrays
Author :
Al-Zayed, Ayman ; Swisher, Robert R. ; Lécuyer, Frédéric ; Guyette, Andrew C. ; Sun, Qi ; De Lisio, Michael P.
Author_Institution :
Dept. of Electr. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
6/1/2001 12:00:00 AM
Abstract :
We report a simple theory for the reduction of substrate modes in quasi-optical power-combining arrays. This qualitative theory predicts that detrimental substrate-mode effects can be greatly reduced through a judicious choice of the array unit cell size. Experimental evidence from quasi-optical tripler grids is presented to confirm the theory. Measured results show a dramatic improvement in the radiation pattern and effective radiated power of arrays with both grounded and ungrounded substrates
Keywords :
dipole antenna arrays; frequency multipliers; microwave frequency convertors; power combiners; array unit cell size; effective radiated power; grounded substrates; qualitative theory; quasi-optical power-combining arrays; quasi-optical tripler grids; radiation pattern; substrate-mode effects; ungrounded substrates; Dielectric constant; Dielectric substrates; Optical arrays; Oscillators; Phased arrays; Radio frequency; Slabs; Sun; Tellurium; Wavelength measurement;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
