Title :
On the improvement of the performance of the optically controlled microwave switch
Author :
Khalil, D.A.M. ; Safwat, A.M.E.
Author_Institution :
Fac. of Eng., Ain Shams Univ., Cairo, Egypt
fDate :
8/1/1997 12:00:00 AM
Abstract :
In this paper, a new design for the gap used as an optically controlled microwave switch is proposed. This new design is based on the use of a rib structure in the gap region. The proposed structure is studied using the finite-difference method (PDM). Obtained results show that for small gaplengths, the structure figure of merit, defined as the product of the ON/OFF ratio and the bandwidth, can be improved by about 38 dB*GHz
Keywords :
equivalent circuits; finite difference methods; microstrip components; microwave devices; photoconducting switches; finite-difference method; gap design; optically controlled microwave switch; optically excited gap; rib structure; semiconductor microstrip transmission line; Capacitance; Finite difference methods; Geometrical optics; High speed optical techniques; Optical control; Optical devices; Optical switches; Photoconductivity; Power semiconductor switches; Substrates;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
