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

Volume

49

Issue

6

fYear

2001

fDate

6/1/2001 12:00:00 AM

Firstpage

1067

Lastpage

1072

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.925492

Filename

925492